Datenblatt für DC2022A Demo Manual von Analog Devices Inc.

l ’ LI” DEMO MANUAL DC2022A TECHNOLOGY L7HEWEAR 1
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DEMO MANUAL DC2022A
DESCRIPTION
LTC2975
4-Channel Power Supply System Featuring the Power
System Manager with Input Energy Accumulation
The DC2022A is a demonstration system that showcases
the LT C
®
2975, a 4-channel I2C/SMBus/PMBus power
system manager with EEPROM. The LTC2975 monitors
and controls four power supply rails. The LTC2975 also
monitors input current and input voltage, which are used
to calculate input power and accumulate energy. The
DC2022A demonstrates the ability of the LTC2975 to se-
quence, trim, margin, supervise, monitor, and log faults
for four power supplies. Each power supply channel’s
output voltage is monitored and the LTC2975 monitors
its own internal die temperature.
The DC2022A is a single circuit board that contains four
independent power supply rails. The board employs four
LTC3405A 300mA switch-mode regulators, which are
configured to be controlled by the LTC2975. The DC2022A
demo board provides a sophisticated 4-channel digitally
programmable power supply system. The rail voltages
are programmable within the trim range shown in the
Performance Summary table.
This demonstration system is supported by the LTpow-
erPlay™ graphical user interface (GUI) which enables
complete control of all the features of the device. Together,
the LTpowerPlay software and DC2022A hardware system
create a powerful development environment for designing
and testing configuration settings of the LTC2975. These
settings can be stored in the device’s internal EEPROM or in
a file. This file can later be used to order pre-programmed
devices or to program devices in a production environ-
ment. The software displays all of the configuration set-
tings and real time measurements from the power system
management IC. Telemetry allows easy access and decod-
ing of the fault log created by the LTC2975. The board
comes pre-programmed with the EEPROM values ap-
propriate for the four power supply rails on the DC2022A.
Just plug and play!
Multiple DC2022A boards can be cascaded together to form
a high channel count power supply (see the Multi-Board
Arrays section). This cascaded configuration demonstrates
features of the LT C Power System Management ICs which
enable timing and fault information to be shared across
multiple power system management ICs. The user can
configure up to eight DC2022A boards, thereby controlling
up to 32 separate power supply rails. Larger board arrays
can be built using programmable I2C base addresses or
bus segmentation.
The DC2022A demo board can be powered by an external
power supply, such as a +12VDC supply. Communication
with the software is provided through the DC1613 USB-to-
I2C/SMBus/PMBus Controller. The following is a checklist
of items which can be obtained from the LT C website or
LT C Field Sales.
n USB-to-I2C/SMBus/PMBus Controller (DC1613)
n LTpowerPlay Software
Design files for this circuit board are available at
http://www.linear.com/demo/DC2022A
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
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DEMO MANUAL DC2022A
FEATURES
n Sequence, Trim, Margin, and Supervise Four Power
Supplies
n Manage Faults, Monitor Telemetry, and Create Fault
Logs
n PMBus Compliant Command Set
n Supported by LTpowerPlay GUI
n Margin or Trim Supplies to 0.25% Accuracy
n Four IOUT and One IIN Monitor
n Input Power Measurement and Energy Accumulation
n Fast OV/UV Supervisors per Channel
n Supports Multi-Channel Fault Management
n Automatic Fault Logging to Internal EEPROM
n Operates Autonomously without Additional SW
n Telemetry Reads Back VIN, VOUT, and Temperature
n 4-Channel Time-Based Output Sequencer
n I2C/SMBus Serial Interface
n Powered from 6V to 14V
n LTC2975 Available in 64-Lead QFN Package
PERFORMANCE SUMMARY
Specifications are at TA = 25°C. Common characteristics specifications valid
over full operating temperature range.
POWER SUPPLY CHANNEL CH(0:3)
Manager/Controller LTC2975
Nominal Untrimmed Output Voltages 1.5V, 1.8V, 2.5V, 3.3V
Rated Output Current 0.3A
Default Margin Range ±5%
Output Trim Range (VFS_VDAC = 1.38V) +15%/–11%
Temperature ±1°C Internal
Common Characteristics
PARAMETER CONDITIONS MIN TYP MAX UNITS
Supply Input Voltage Range 6 14 V
ADC Total Unadjusted Error VIN_ADC ≥ 1V ±0.25 %
ADC Voltage Sensing Input Range Differential Voltage: VIN_ADC = (VSENSEP[n] – VSENSEM[n]) 0 6 V
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DEMO MANUAL DC2022A
GLOSSARY OF TERMS
The following list contain terms used throughout the
document.
Channel – The collection of functions that monitor, su-
pervise, and trim a given power supply rail.
EEPROM – Non-volatile memory (NVM) storage used to
retain data after power is removed.
Margin – Term used typically in board level testing that
increases/decreases the output voltage to look for sensi-
tivity/marginality problems.
Monitor – The act of measuring voltage, current, and
temperature readings.
NVM – Non-volatile memory, see EEPROM.
PMBus – An industry standard power-management proto-
col with a fully defined command language that facilitates
communication with power converters and other devices
in a power system.
Rail – The final output voltage that the power supply
controller manages.
Supervise – The act of quickly responding (warning or
faulting) to a voltage, current, temperature condition that
is compared to pre-programmed values.
Trim – The act of adjusting the final output voltage. A servo
loop is typically used to trim the voltage.
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DEMO MANUAL DC2022A
LTpowerPlay is a powerful Windows-based development
environment that supports Linear Technology power
system management ICs with EEPROM, including the
LTC2975 4-channel PMBus power system manager. The
software supports a variety of different tasks. You can
use LTpowerPlay to evaluate Linear Technology ICs by
connecting to a demo board system. LTpowerPlay can
also be used in an offline mode (with no hardware pres-
ent) in order to build a multi-chip configuration file that
can be saved and re-loaded at a later time. LTpowerPlay
provides unprecedented system level diagnostic and debug
features. It becomes a valuable diagnostic tool during
board bring-up to program or tweak the power manage-
ment scheme in a system or to diagnose power issues
when bringing up rails. LTpowerPlay utilizes the DC1613
I2C/SMBus/PMBus Controller to communicate with one
of many potential targets, including the DC2022A demo
system or a customer board. The software also provides
an automatic update feature to keep the software current
with the latest set of device drivers and documentation.
The LTpowerPlay software can be downloaded from:
http://www.linear.com/ltpowerplay
To access technical support documents for LT C Power
System Management Products visit "Help, View Online
help" on the L
TpowerPlay menu.
LTpowerPlay GUI SOFTWARE
Figure 1. Screenshot of the LTpowerPlay GUI
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DEMO MANUAL DC2022A
QUICK START PROCEDURE
The following procedure describes how to set up a DC2022A
demo system.
1. Download and install the LTpowerPlay GUI:
www.linear.com/ltpowerplay
2. Remove the board from the ESD protective bag and
place it on a level surface. Connect the DC1613 I2C/
SMBus/PMBus Controller to the DC2022A board using
the 12-pin ribbon cable.
3. Confirm that the CONTROL switch is set to the RUN
position.
4. Plug the USB-to-I2C/SMBus/PMBus Controller into a
USB port on your PC. The board should power up with
all power good LEDs and 5V LED illuminated green. The
USB-to-I2C/SMBus/PMBus Controller supplies ~100mA
of current which should be sufficient for a single demo
board.
5. If multiple boards are being powered, connect a +12VDC
power supply with > 0.5A capacity to the VIN input jack
of the DC2022A.
6. Launch the LTpowerPlay GUI.
a. The GUI automatically identifies the DC2022A and builds
a system tree for each power manager. The system tree
on the left hand side will look as shown below.
Note: For multiple board arrays, the GUI automatically
ensures each device has a unique address. In this
scenario, it is recommended at this point to store these
addresses to NVM (EEPROM) by clicking the RAM to
NVM icon in the toolbar.
Figure 2. Connecting DC2022A Board and the DC1613 I2C/SMBus/PMBus Controller
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DEMO MANUAL DC2022A
QUICK START PROCEDURE
b. A green message box will be displayed momentarily in
the lower left hand corner confirming that the DC2022A
is communicating.
c. Save the demo board configuration to a (*.proj) file
by clicking the "Save" icon. This creates a backup file.
Name it whatever you want.
7. The CONTROL switch is configured to control all 4 chan-
nels. Slide the switch to RUN to enable, OFF to disable
all channels. For multiple board arrays, the CONTROL
switch is wired to a signal that is common across all
boards. All CONTROL switches must be set to the RUN
position to enable all boards.
Loading a DC2022A Configuration (*.proj) File with
the GUI
1. In the upper left hand corner of the GUI, File > Open
> browse to your *.proj file. This will load the file into
the GUI.
2. Click on the Go Online icon , then click on the
PC->RAM icon . This loads the configuration into
the working RAM of the LTC2975.
3. To store the configuration to NVM (EEPROM), click on
the RAM->NVM icon .
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DEMO MANUAL DC2022A
DETAILS - TOP SIDE
Figure 3. DC2022A Top Side Details
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DEMO MANUAL DC2022A
COMMON DEMO BOARD OPERATIONS
Margin All Rails
The LTC2975 power manager on the DC2022A not only
monitors each of the four outputs but can margin the
outputs either high or low. Margining is the operation that
moves a rail either up or down for testing purposes. It al-
lows a system to be fully characterized over supply limits
without the use of external hardware or resources. The
GUI provides an easy way to margin all rails high or all low
by clicking one of four buttons. To invoke the margining
dialog, click the GroupOp icon in the toolbar. The
buttons labeled “ignore faults” will margin without creating
a fault even if the fault limits are exceeded.
A look at the telemetry window shows the effect of the
margin high or margin low operation. The following screen
shot shows all rails going from nominal setpoints to margin
high, margin low, and back to nominal voltages.
The LTC2975 has a multiplexed ADC that is used to provide
voltage, current, and temperature readback values. The
telemetry plot in the GUI is similar to a multi-channel oscil-
loscope which is capable of displaying any parameter that
is displayed in the telemetry window. Due to the nature of a
multiplexed ADC converter, it has an associated ADC loop
time. The total ADC loop time (~100ms to 160ms) for a
given channel is dependent on the device’s configuration.
Creating a Fault
There is a pushbutton on the DC2022A board that is used
to force a fault and demonstrate the demo board’s ability
to detect it and respond according to the configuration.
When depressed, the pushbutton creates a fault (short
to ground) on channel 3, the 3.3V output (GUI channel
U0:3). The user should see all outputs power off, the
fault LED momentarily illuminate, the alert LED illuminate
continuously, and all rails sequence back on after a retry
period. The user may also short any power supply output
indefinitely. This is a good way to induce UV faults and
shows that a shorted channel will not be damaged. Use a
jumper wire or a coin to short any output.
Clearing a Fault
To clear a fault, the user may click the CF icon in the
GUI or simply push the RESET pushbutton on the demo
board. In both cases, the red (+) on the CF icon and alert
LED on the board will be cleared. You will notice that all
rails are automatically re-enabled after a programmable
retry period. The alert LED may be cleared by clicking the
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DEMO MANUAL DC2022A
Figure 4. Sequencing Output Channels with DC2022A Using TON_DELAY and TOFF_DELAY
Figure 5. TON_DELAY Configuration Figure 6. TOFF_DELAY Configuration
COMMON DEMO BOARD OPERATIONS
clear faults (CF) icon in the GUI. After clearing faults, the
system tree may remain yellow if any non-volatile fault
logs are present. For further information, see the Working
with the Fault Log section.
Resetting the DC2022A
A reset pushbutton is provided on the board. To reset all
devices on the DC2022A board and reload the EEPROM
contents into operating memory (RAM), press RESET
(SW1) on the DC2022A.
DC2022A LEDs
Each individual channel on DC2022A also has its own green
power good LED (CH0 through CH3). When USB power
(DC1613 Controller) or external power (6V to 14V jack) is
applied, the +5V green LED will illuminate, indicating that
the LTC2975 power system manager is powered. The red
LEDs will illuminate when an alert or a fault has occurred.
Sequencing Output Channels
The LTC2975 has been pre-configured with different
TON_DELAY values for each channel. The TON_DELAY
parameter is applied to each device relative to the respective
CONTROL pin. When multiple demo boards are connected
together, all CONTROL pins are wire OR’d. Therefore the
TON delays are enforced relative to one edge. The same
applies to TOFF_DELAY values. When the CONTROL
switch is set to the OFF position, all rails will power down
sequentially based on each of the device’s TOFF_DELAY
values. Figure 4 shows an oscilloscope screen capture of
three output rails sequencing up and down in response
to the CONTROL pin.
Each channel has an LED which visually indicates if the
channel has power. When the CONTROL pin is switched
on and off, you will observe the relative on/off timing of
the 4 channels. For the LTC2975, the TON_DELAY and
TOFF_DELAY values are limited to 655ms.
CONTROL
CH2, 2.5V
CH1, 1.8V
CH0, 1.5V
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DEMO MANUAL DC2022A
COMMON DEMO BOARD OPERATIONS
“Why Am I Off?” Tool
Use the “Why am I Off?” tool in the LTpowerPlay GUI to
diagnose the reason a power supply channel is turned off.
Figure 7. "Why Am I Off” Tool in the LTpowerPlay GUI
What Is a Fault Log?
A fault log is a non-volatile record of the power system
leading up to the time of fault. It holds the most recent
monitored values (uptime, voltage, current, temperature)
that can be analyzed to help determine the cause of the
fault. It is a powerful diagnostic feature of the LTC2975
on the DC2022A demo board.
Create a Fault Log
To create a fault log, you must create a fault, as described
in the Creating a Fault section. If multiple boards are
configured, select the appropriate device in the system
tree by clicking on the appropriate LTC2975 chip. We will
proceed to work with the fault log.
Working with the Fault Log
Once a fault has occurred, the fault log (FL) icon
will show a red (+) sign on it, indicating that the GUI has
detected a fault log in the device. Clicking the icon will
bring up a dialog box. Note that it is context sensitive. If
ADVANCED DEMO BOARD OPERATIONS
multiple DC2022A boards are connected, be sure that the
desired device is selected in the system tree.
Notice that the checkbox “Log to EEPROM on Fault” is
checked. Once a fault occurs, the device will automatically
write the fault log data to EEPROM (NVM). At this point,
the log is locked and will not change until it is cleared
by the user. To read the EEPROM log data, first click the
“EEPROM to RAM” button. At this point the RAM Log is
locked and not updated even though the telemetry read-
ings continue. Click the “Read NVM Log” button. The log
data will appear in the text box below.
The tool can be located in the top right corner of the GUI,
above the “Register Information” tab. Hover your cursor
over this tab to show the tool.
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DEMO MANUAL DC2022A
ADVANCED DEMO BOARD OPERATIONS
In this case, the fault log will show that channel U0:7
faulted due to a VOUT_UV_FAULT condition. On the pre-
vious telemetry loop, the channel voltage reading was a
nominal value (3.3V).
To clear the fault log, click the “Clear/Rearm EEPROM
Log” button. This allows the selected device to be ready
for a new fault event. To clear all faults, click the clear
faults (CF) icon.
The log contains timestamp, up-time, channel voltage
readings, an input voltage reading, an on-chip temperature
reading, etc. There will be a number of loops; each loop
contains data obtained in one ADC loop time with the
most recent ADC loop data on top and the oldest data at
the bottom of the log. The up-time indicates, at the time
of fault, the amount of time the device had been powered
up or time since the previous reset.
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DEMO MANUAL DC2022A
ADVANCED DEMO BOARD OPERATIONS
Fault Sharing Setup in the GUI
Fault sharing provides a means of propagating a fault
detected by a power manager to other power managers
via FAULT pins. Use the Fault Sharing Setup Tool to con-
figure the fault sharing in the GUI. Select the LTC2975 in
the system tree. Go to Utilities > Fault Sharing Diagram.
For more details on this topic, please refer to the Fault
Management section in the data sheet.
channel will propagate to all channels on the DC2022A
demo board since the fault pins are tied together.
NOTE: All FAULT pins of the LTC2975 are tied together on
the DC2022A demo board. These pins are open drain and
have a common pull-up resistor to provide a logic high
level (inactive). All FAULT pins are active low.
There are two types of actions to fault conditions: How a
channel responds to another channel’s fault and whether
a particular channel propagates its fault to other channels.
FAULT pins are bi-directional, meaning the device may
drive its fault pin low (output) or may respond to the fault
pin when another device drives it low (input). Because all
fault pins are wire OR’d on the DC2022A, this hardware
configuration allows one to program each device’s fault
settings on a channel-by-channel basis. By default, the
LTC2975 is configured to shut down its channels if other
devices fault and to propagate its own fault via the FAULT
pins. A fault on these channels will cause only that chan-
nel to fault off. You can think of the response switches as
“shut this channel down when another channel faults,” and
the propagate switches as “drive a fault pin to broadcast
to other channels that this channel faulted."
The fault sharing dialog will appear as shown in Figure 8.
All Response and all Propagate switches are closed by
default. In this configuration, a fault on a channel will
shut down all LTC2975 channels, and a fault on any given
Figure 8. Fault Sharing Utility in LTpowerPlay GUI
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DEMO MANUAL DC2022A
ADVANCED DEMO BOARD OPERATIONS
Fault Configuration Example
Let’s explore two different examples. Suppose we do not
want channel U0:0 (CH0 1.5V rail) to propagate its fault
to the other channels when it faults. And suppose we do
not want channel U0:1 (CH1 1.8V rail) to shut down in
response to another channel’s fault. We can configure the
switches as shown in Figure 9. Simply click the switches
to open/close. Click OK to close the dialog box. Click the
PC->RAM icon to write the changes to the DC2022A.
We can now create a fault on U0:0 (CH0) by shorting
the output to ground. You may use a coin or a jumper
to temporarily connect CH0 to the GND turret. You will
notice that the channel shuts off but the other channels
remain powered up because its fault is not propagated to
the other channels. After the retry period, channel U0:0
(CH0) will power back up. We can now observe the effect
of changing the response setting on U0:1 (CH1). If you
short U0:3 (CH3 3.3V rail) to ground, notice that all rails
shut down except U0:1 (CH1). This is an example of a
keep-alive channel that remains powered up independent
of faults to other channels.
Energy Metering
In the LT C Power System Manager family, the LTC2975
employs a new feature: high-side current sensing of the
input power supply. This feature allows the manager to
measure input supply current. The manager also measures
Figure 9. Updated Fault Sharing Configuration
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DEMO MANUAL DC2022A
input supply voltage and is therefore able to report input
power as well. Since energy is the product of power and
time, accumulated energy is provided based on the man-
ager’s internal time base.
The meter displayed in the upper right hand corner of the
GUI provides a number of bits of information. The needle
is a real-time indicator of input power and the smaller 5
dials show the total accumulated energy similar to a home
electricity meter.
ADVANCED DEMO BOARD OPERATIONS
The DC2022A demo board does not have power supplies
that are capable of high current. However, conceptually the
LTC2975 is able to monitor and measure an entire large
power system with ease. LTpowerPlay offers a simple and
easy to understand interface that brings together input
and output current, voltage, power, and energy readings.
You may also view the input current, input voltage, input
power, and input energy in numeric format. These appear
in the telemetry portion of the GUI. The MFR_EIN register
holds the accumulated energy value in milliJoules. There
is also a total time that the energy accumulator has been
active and is shown as the MFR_EIN_TIME register. The
GUI will automatically update the displayed multiplier as
the units go from mJ to J to kJ.
The DC2022A board provides power to the LTC2975
manager via a 5V supply, whether power comes from the
USB ribbon cable or from the 6V to 14V power jack. See
Figure 10 for a simplified block diagram.
To demonstrate the meter readings and register values,
first select the MFR_EIN register to display the energy
in the telemetry window (GUI’s lower right). Turn off all
channels by switching the RUN switch to off. You will notice
that the slope has changed. The accumulated energy rate
is the slope. Energy is still being consumed to power the
LTC4415 power switch and the LTC2975 power manager.
Note that the input current has changed from about 40mA
down to 17mA as seen in the READ_IIN register. The
MFR_EIN_WATTS register displays the input power that is
being drawn. This register is the product of the READ_VIN
and READ_IIN values. When all the channels are powered
up, the input current is about 40mA. Since the input volt-
age is 5V, the input power is 5V•40mA or 200mW. You
can confirm this by clicking these three registers one by
one and view the telemetry window.
The MFR_EIN and MFR_EIN_TIME registers may be reset
by writing the MFR_EIN_CONFIG register.
POWERJACK 571w 37 +5v *sv from use SOmO VDDS 4— L7 HEW SM EUS +3.3v RUN VPWR CONTROL IIN45NSP E m z m
15
dc2022af
DEMO MANUAL DC2022A
ADVANCED DEMO BOARD OPERATIONS
Figure 10. DC2022A Simplified Block Diagram
LTC2975
4CHPOWER
SYSTEMMANAGER
CONTROL
SMBUS
5VSWITCH
REG
(LTC3604)POWER
SWITCH
(LTC4415)
POWERJACK
6–14V
+5V
DC/DC
(LTC3405)
+5VfromUSB
VDD5
VPWR
LOAD
DC/DC
(LTC3405)
DC/DC
(LTC3405)
DC/DC
(LTC3405)
LOAD
LOAD
LOAD
IIN_SNSP
IIN_SNSM
50mΩ
RUN
SWITCH
16 L7HL'ELSB
16
dc2022af
DEMO MANUAL DC2022A
SETUP PROCEDURE FOR MULTIBOARD ARRAYS
Up to eight DC2022A boards can be cascaded to control up
to 32 independent power supplies. The number of boards
is limited by an I/O expander chip that has three address
pins, allowing eight different combinations. This setup
demonstrates the coordinated fault responses and accurate
time base shared across multiple power system managers.
Procedure
1. Stack the boards side-by-side by plugging JP1 of one
board into JP2 of another DC2022A board.
2. Ensure different slave address settings for each of the
boards. The address of each DC2022A board is set by
the DIP switch JP1 on the backside of the board. The
setting must be unique for each board in the array.
3. Plug in the 12V VIN power into one of the boards as
shown in Figure 11. Only one 12V power source is al-
lowed.
4. The USB-to-I2C/SMBus/PMBus Controller may
be plugged into any board. If no DC2022A boards
Figure 11. Array of Multiple DC2022A Demo Boards
show up in the GUI, click the magnifying glass icon
to enumerate the I2C bus and find the addresses
of the parts. Go to step #2 to ensure that each board
has a unique DIP switch setting.
5. Since the individual CONTROL lines are connected
across the boards (CTRL is a common signal across
all boards in the array), make sure that all CONTROL
switches are set to the RUN position.
6. Re-launch LTpowerPlay. After launching, LTpowerPlay
will enumerate the entire board array and build a rep-
resentative system tree and read all hardware settings
into the GUI.
ATTENTION: Once the GUI has launched, click the
RAM->NVM button in the toolbar to ensure that the slave
addresses are retained after a power off or reset. Otherwise
you may lose communication with the slaves after a power
cycle or reset event.
17 L7 LJUW
17
dc2022af
DEMO MANUAL DC2022A
SETUP PROCEDURE FOR MULTIBOARD ARRAYS
Ensuring Slave Addresses Do Not Conflict
There is a small DIP switch on the backside of the DC2022A.
It is used to set the slave address of an I/O expander which
allows the addition of multiple boards to a setup. The I/O
expander has a base address of 0x20. The DIP switch
settings set the offset. The three switches that may be
changed are labeled A0, A1, A2. Examples below set the
boards to address 0x20 and 0x27.
Figure 12. DIP Switch Set to All 0's
Figure 13. DIP Switch Set to All 1's
ALERT and FAUIJ LEDS nzu m a 2 flu : r. 7-. c _v._. Hg. Test point tu "EB for CREAIE FAULT switch the control signals RESEI' switch L7HCU§QB Connectorforcascading multipleDQom lED ind icating+5V in put power to [“2375 :14): 222233 o EN] Connectorforcascading multiple DCZOZZA CONTROL switch 18
18
dc2022af
DEMO MANUAL DC2022A
DC2022A DETAILS - TOP
Table 1. DC2022A - Default Switch Configuration (Default Position Shown in Gray)
REFERENCE DESIGNATOR SIGNAL NAME USAGE DEFAULT
JP3 (Bottom) A0, A1, A2 DIP Switch Used to Set the Address Offset OPEN
S1 CONTROL Switch Used to Enable/Disable the CONTROL0 Input Pin of LTC2975 RUN
Q 0:930 omo Q ] + :. n} I“. E “I“— : cm w. mm mm .. wdaLo 19 L7 LJUW
19
dc2022af
DEMO MANUAL DC2022A
DC2022A DETAILS - BOTTOM
L7LJCUEN2
20
dc2022af
DEMO MANUAL DC2022A
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 1 U4 IC 4-CH POWER SYSTEM MANAGER 64QFN Linear Technology: LTC2975CUP#PBF
Additional Demo Board Circuit Components
2 4 C1, C3, C33, C35 CAP CER 220pF 50V 10% X7R 0603 AVX: 06035A221KAT2A
3 8 C2, C4, C5, C6, C30, C31, C32, C34 CAP CER 2200pF 50V 20% X7R 0603 Murata: GRM188R71H222MA01D
4 14 C7, C8, C12, C16, C18, C21, C22,
C25, C26, C43, C44, C50, C54, C55
CAP CER 0.1µF 16V 10% X7R 0603 TDK Corp: C1608X7R1C104K
5 10 C9, C10, C15, C23, C24, C41, C42,
C45, C56, C57
CAP CER 22µF 10V 10% X5R 1210 Murata: GRM32ER61A226KE20L
6 2 C11, C48 CAP CER 10µF 25V 10% X7R 1206 Kemet: C1206C106K3RACTU
7 2 C13, C53 CAP CER 68pF 50V 5% NPO 0603 Yageo: CC0603JRNPO9BN680
8 7 C14, C19, C20, C27, C28, C29, C46 CAP CER 1µF 16V 10% X7R 0603 Murata: GRM188R71C105KA12D
9 1 C17 CAP CER 47pF 50V 5% NPO 0603 Yageo: CC0603JRNPO9BN470
10 10 C36, C37, C38, C39, C49, C58, C59,
C60, C61, C62
CAP CER 10000pF 25V 10% X7R 0603 Yageo: CC0603KRX7R8BB103
11 1 C40 CAP TANT 47µF 16V 20% 7343 Kemet: T520D476M016ATE035
12 2 C47, C51 CAP CER 4.7µF 16V 10% X5R 0603 TDK: C1608X5R1C475K
13 1 C52 CAP CER 4.7pF 50V NP0 0603 Murata: GRM1885C1H4R7CZ01D
14 1 D1 DUAL SCHOTTKY DIODE 30V CC SOT-323-3 STMicroelectronics: BAT30CWFILM
15 4 L1, L2, L4, L5 INDUCTOR SHLD POWER 4.7µH SMD Abracon Corporation: ASPI-0315FS-4R7M-T2
Würth: 744029004 (Alternate)
16 1 L3 INDUCTOR POWER 2.2µH 2.85A SMD Vishay: IHLP1616BZER2R2M11
17 2 LED1, LED2 LED RED HI BRT SS TYPE LO CUR SM Panasonic: LNJ208R8ARA
18 5 LED3, P1, P2, P3, P4 LED GREEN HIGH BRIGHT ESS SMD Panasonic: LNJ326W83RA
19 4 Q1, Q2, Q3, Q4 TRANS GP SS PNP 40V SOT323 ON Semiconductor: MMBT3906WT1G
20 5 Q5, Q6, Q7, Q8, Q9 MOSFET N-CH 30V 900MA SOT323-3 Diodes Inc.: DMG1012UW-7
Vishay/Siliconix: SI1304BDL-T1-E3 (alternate)
21 9 R1, R2, R25, R26, R29, R30, R43,
R52, R53
RES 100K OHM 1/10W 1% 0603 SMD Vishay: CRCW0603100KFKEA
22 1 R3 RES 47.5K OHM 1/10W 1% 0603 SMD Vishay: CRCW060375K5FKEA
23 1 R4 RES 32.4K OHM 1/10W 1% 0603 SMD Vishay: CRCW060332K4FKEA
24 5 R5, R6, R10, R18, R19 RES 3.01K OHM 1/10W 1% 0603 SMD Yageo: RC0603FR-073K01L
25 1 R7 RES CURRENT SENSE .050 OHM 1W 1% Ohmite: MCS1632R050FER
26 8 R8, R12, R20, R23, R24, R37, R39,
R56
RES 10.0K OHM 1/10W 1% 0603 SMD Vishay: CRCW060310K0FKEA
27 2 R9, R45 RES 73.2K OHM 1/10W 1% 0603 SMD Yageo: RC0603FR-0773K2L
28 1 R11 RES 46.4K OHM 1/10W 1% 0603 SMD NIC: NRC06F4642TRF
29 2 R13, R17 RES 249 OHM 1/10W 1% 0603 SMD Yageo: RC0603FR-07249RL
30 1 R14 RES 1.00K OHM 1/10W 1% 0603 SMD Yageo: RC0603FR-071KL
31 3 R15, R16, R38 RES ARRAY 10K OHM 4 RES 1206 Vishay/Dale: CRA06S08310K0JTA
32 1 R21 RES 115K OHM 1/10W 1% 0603 SMD Vishay: CRCW0603115KFKEA
33 1 R22 RES 80.6K OHM 1/10W 1% 0603 SMD Vishay: CRCW060380K6FKEA
34 4 R27, R28, R54, R55 RES 330 OHM 1/2W 1% 1210 SMD Vishay Dale: CRCW1210330RFKEA
35 4 R31, R32, R50, R51 RES ARRAY 2.7K OHM 4 RES 1206 Vishay/Dale: CRA06S0832K70JTA
L7 LJUW 21
21
dc2022af
DEMO MANUAL DC2022A
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
36 4 R33, R35, R47, R49 RES 100 OHM 1/10W 1% 0603 SMD NIC: NRC06F1000TRF
37 1 R34 RES 340K OHM 1/10W 1% 0603 SMD Vishay: CRCW0603340KFKEA
38 1 R36 RES 402K OHM 1/10W 1% 0603 SMD Vishay: CRCW0603402KFKEA
39 1 R40 RES 2.15K OHM 1/10W 1% 0603 SMD Vishay: CRCW06032K49FKEA
40 1 R41 (OPT) RES 10.0K OHM 1/10W 1% 0603 SMD Vishay: CRCW060310K0FKEA
41 2 R42, R44 RES 698 OHM 1/10W 1% 0603 SMD Yageo: RC0603FR-07698RL
42 1 R46 RES 158K OHM 1/10W 1% 0603 SMD Vishay: CRCW0603158KFKEA
43 1 R48 RES 210K OHM 1/10W 1% 0603 SMD Vishay: CRCW0603210KFKEA
44 4 U1, U2, U7, U8 IC BUCK SYNC ADJ 0.3A SOT23-6 Linear Technology: LTC3405AES6#TRMPBF
45 1 U3 IC BUCK SYNC 2.5A 16QFN Linear Technology: LTC3604IUD#PBF
46 1 U5 IC DUAL 4A DIODES 16-MSOP Linear Technology: LTC4415IMSE#PBF
47 1 U6 IC 2WIRE BUS BUFFER 8MSOP Linear Technology: LTC4313CMS8-2#PBF
48 1 U9 IC I/O EXPANDER I2C 8B 20QFN Microchip: MCP23008-E/ML
49 1 U10 IC EEPROM 2KBIT 400KHZ SOT23-5 Microchip Technology: 24AA02T-I/OT
50 1 U11 IC VREF SERIES PREC TSOT-23-6 Linear Technology: LT6654BHS6-1.25#TRMPBF
51 1 U12 IC BUFFER DUAL NON-INV SC706 TI: SN74LVC 2G34DCKR
Hardware: For Demo Board Only
52 1 J1 CONN PWR JACK 2.1X5.5MM HIGH CUR CUI Inc: PJ-002AH
53 1 J2 CONN HEADER 12POS 2MM STR DL PCB FCI: 98414-G06-12ULF
54 1 JP1 CONN RECEPT 2MM DUAL R/A 14POS Sullins Connector Solutions: NPPN072FJFN-RC
55 1 JP2 CONN HEADER 14POS 2MM R/A GOLD Molex Connector Corporation: 87760-1416
56 1 JP3 SWITCH DIP 4POS HALF PITCH SMD C&K Components: TDA04H0SB1
57 4 MH1, MH2, MH3, MH4 SPACER STACKING #4 SCREW NYLON Keystone: 8831
58 1 S1 SW SLIDE DPDT 6VDC 0.3A PCMNT C&K Components: JS202011CQN
59 1 SW1 BLK SWITCH TACTILE SPST-NO 0.05A 12V C&K Components: PTS635SL25SMTR LFS
60 1 SW2 RED SWITCH TACTILE SPST-NO 0.05A 12V C&K Components: PTS635SK25SMTR LFS
61 14 TP1, TP2, TP3, TP4, TP5, TP6, TP7,
TP12, TP13, TP14, TP19, TP20,
TP21, TP22
TERM SOLDER TURRET .219" .078"L MILL-MAX: 2501-2-00-80-00-00-07-0
"BEHAw $3315 $323 "$52 L7LJCUEN2 22
22
dc2022af
DEMO MANUAL DC2022A
SCHEMATIC DIAGRAM
LTC2975 CH0 POWER STAGE, VOUT=1.5V LTC2975 CH1 POWER STAGE, VOUT=1.8V
1210
1210
1210
1210
1210
1210
CRA06S
CH1
1.8V
CH0
1.5V
4x ARRAY
CRA06S
4x ARRAY
2 1
2 1
LTC3405AES6
4.7uH
100k
330
22u/10V
GND
VDD
GREEN
DMG1012UW-7
22u/10V 220p
GND GND
GND
402k
100n
100
GND
GND
VDD
3.01k
100k
115k
GND
10n
2.2n 2.2n
10n
MMBT3906
100n
GND GND
GND
GND GND
2.7k, 4X
LTC3405AES6
4.7uH
100k
330
22u/10V
GND
VDD
GREEN
DMG1012UW-7
22u/10V 220p
GND GND
GND
340k
100n
100
GND
GND
VDD
3.01k
100k
80.6k
GND
10n
2.2n 2.2n
10n
MMBT3906
100n
GND GND
GND
GND GND
2.7k, 4X
DMG1012UW-7
GND
VDD
100k
GND
1
2
34
6
5
U7
L4
R30
R28
C23
P3
32
1
Q6
C42 C33
R36
C44
R35
R18
R25
R21
C39
C32 C30
C38
2
1
3
Q3
C25
R32
1
2
34
6
5
U8
L5
R29
R27
C24
P4
32
1
Q5
C41 C35
R34
C43
R33
R19
R26
R22
C37
C34 C31
C36
2
1
3
Q4
C26
R31
32
1
Q7
R43
SW2
DACP_CH0
RUN_CH0
VSNS_CH0
TEMP_CH0
ISNSP_CH0
ISNSN_CH0
VOUT_CH0 VOUT_CH1
DACP_CH1
RUN_CH1
VSNS_CH1
TEMP_CH1
ISNSP_CH1
ISNSN_CH1
SHORT
SHORT
1 PRODUCTION MIKE P. 02-12-14
1. ALL RESISTORS ARE 1% 0603.
2. ALL CAPACITORS ARE 16V 0603.
3. THE INTERMEDIATE BUS IS VDD=5.0V
VIN
GND
SW
MODE RUN
VFB
VIN
GND
SW
MODE RUN
VFB
CUSTOMER NOTICE
B
SCALE = NONE
LTC CONFIDENTIAL
FOR CUSTOMER
USE ONLY
PCB DES.
APP ENG. www.linear.com
-
23 "EEfium “£3515 mmflz: "BEZ ‘ J r4 LL eHI—o j—l ma L7 LJUW
23
dc2022af
DEMO MANUAL DC2022A
SCHEMATIC DIAGRAM
LTC2975 CH2 POWER STAGE, VOUT=2.5V LTC2975 CH3 POWER STAGE, VOUT=3.3V
1210
1210
1210
1210
1210
1210
CH3
3.3V
CH2
2.5V
CRA06S
4x ARRAY
CRA06S
4x ARRAY
2 1
2 1
LTC3405AES6
4.7uH
100k
330
22u/10V
GND
VDD
GREEN
DMG1012UW-7
22u/10V 220p
GND GND
GND
210k
100n
100
GND
GND
VDD
3.01k
100k
47.5k
GND
10n
2.2n 2.2n
10n
MMBT3906
100n
GND GND
GND
GND GND
2.7k, 4X
LTC3405AES6
4.7uH
100k
330
22u/10V
GND
VDD
GREEN
DMG1012UW-7
22u/10V 220p
GND GND
GND
158k
100n
100
GND
GND
VDD
3.01k
100k
32.4k
GND
10n
2.2n 2.2n
10n
MMBT3906
100n
GND GND
GND
GND GND
2.7k, 4X
1
2
34
6
5
U1
L1
R53
R55
C9
P1
32
1
Q9
C57 C1
R48
C55
R49
R5
R1
R3
C60
C2 C5
C61
2
1
3
Q1
C7
R51
1
2
34
6
5
U2
L2
R52
R54
C10
P2
32
1
Q8
C56 C3
R46
C54
R47
R6
R2
R4
C58
C4 C6
C59
2
1
3
Q2
C8
R50
VOUT_CH2
DACP_CH2
RUN_CH2
VSNS_CH2
TEMP_CH2
ISNSP_CH2
ISNSN_CH2
DACP_CH3
RUN_CH3
VSNS_CH3
TEMP_CH3
ISNSP_CH3
ISNSN_CH3
VOUT_CH3
1 PRODUCTION MIKE P. 02-12-14
1. ALL RESISTORS ARE 1% 0603.
2. ALL CAPACITORS ARE 16V 0603.
3. THE INTERMEDIATE BUS IS VDD=5.0V
VIN
GND
SW
MODE RUN
VFB
VIN
GND
SW
MODE RUN
VFB
CUSTOMER NOTICE
B
SCALE = NONE
LTC CONFIDENTIAL
FOR CUSTOMER
USE ONLY
PCB DES.
APP ENG. www.linear.com
-
mngnnnnl "BEBum “$3516 33:: EB? DEAD # L7Lt 24
24
dc2022af
DEMO MANUAL DC2022A
SCHEMATIC DIAGRAM
RESET
IHLP-1616BZ
FEATURING ACCURATE ENERGY MEASUREMENT
INTERMEDIATE +5V BUS AND DIODE-OR
CRA06S CRA06S
1206
1206
7343
1206
1210
4-CHANNEL POWER SYSTEM MANAGER
LTC2975
+5V
2 1
GND
VDD
2.2uH
LTC3604IUD
68p
GND
4.7p
GND GND
68p
47p
GND GND
47u/16V
GND
10u/25V
GND
GND GND
100n
4.7u
GND
22u/10V
73.2k
73.2k
10k
LTC4415IMSE
GND
46.4k
10k
GND
249
GND
1.0k
GND
1u
GND
10u/25V
GND
1u
GND
GREEN
3.01k
GND
+12V
LT6654BMPS6-1.25
1u
GND GND
4.7u
2.49k
GND
BAT30CWFILM
0.050
LTC2975CUP
GND
GND
100n
100n
100n
GND GND
1u
GND
GND
GND
VDD +3V3
10k, 4X10k, 4X
10n
GND
GND
10n
GND
SW1
L3
16
156
5
4
3
2
1
8
7 14
13
12
11
10
9
PAD
U3
C53
C52
C13
C17
C40
C11
C12
C51
C15
R45
R9
R8
3
2
1
6
5
4
7
8 9
10
11
12
13
14
15
16
EXP
U5
R11
R12 R13 R14
C20
C48
C19
LED3
R10
1
2
3 4
5
6
U11
C46
C47
R40
1
3
2
D1
R7
38
37
36
35
34
33
32
31
10
9
8
6
5
4
3
2
1
20
19
18
17
16
15
14
13
12
11
30
29
28
27
26
25
24
23
22
7
21
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
U4
C16
C21
C18C14
R15R38
C49
C62
ALERTB
FAULTB
RESETB
EEVCC
SCL
SDA
CTRL
SHARE_CLK
IBV_AUX
IIN_SNSM
IIN_SNSM
IIN_SNSP
IIN_SNSP
ISNSP_CH3
ISNSN_CH3
DACP_CH3
VSNS_CH0
RUN_CH0
ISNSN_CH0
ISNSP_CH0
DACP_CH0
RUN_CH1
RUN_CH2
RUN_CH3
TEMP_CH0
TEMP_CH1
TEMP_CH2
TEMP_CH3
VSNS_CH1
VSNS_CH2
DACP_CH2
DACP_CH1
VSNS_CH3
ISNSN_CH2
ISNSP_CH2
ISNSN_CH1
ISNSP_CH1
1 PRODUCTION MIKE P. 02-12-14
1. ALL RESISTORS ARE 1% 0603.
2. ALL CAPACITORS ARE 16V 0603.
3. THE INTERMEDIATE BUS IS VDD=5.0V
RUN
TRACK/SS
MODE/SYNC
PGOOD
SW
SW
NC
BOOST
INTVCC
VON
VIN
SGND
RT
FB
ITH
VIN
PAD
IN1
IN1
EN1 STAT1
OUT1
OUT1
CLIM1
CLIM2
IN2
IN2
EN2 STAT2
WARN2
WARN1
OUT2
OUT2
GND
GND
GND
DNC
DNC
VIN
VOUT
REFP
GND
VSENSEP0
VSENSEM0
VOUT_EN0
VOUT_EN1
VOUT_EN2
VOUT_EN3
DNC
VIN_SNS
VPWR
VDD33
VDD33
VDD25
VDD25
TSENSE0
TSENSE1
PWRGD
SHARE_CLK
GND
GND
GND
CONTROL3
WDI/RESETB
FAULTB0
REFM
FAULTB1
TSENSE2
WP
SDA
SCL
ALERTB
CONTROL0
CONTROL1
TSENSE3
ASEL0
ASEL1
AUXFAULTB
CONTROL2
GND
PAD
ISENSEM2
ISENSEP2
ISENSEM3
ISENSEP0
ISENSEM0
ISENSEP1
ISENSEM1
ISENSEP3
VDAC1
VDAC0
IIN_SNSM/NC
VSENSEP3
VSENSEM3
VIN_SNS_CAP/NC
GND/NC
IIN_SNSP/NC
VSENSEM2
VSENSEP2
VSENSEM1
VDAC2
VDAC3
GND
GND
VSENSEP1
CUSTOMER NOTICE
B
SCALE = NONE
LTC CONFIDENTIAL
FOR CUSTOMER
USE ONLY
PCB DES.
APP ENG. www.linear.com
-
mgtyaunnz "328% #3515 mmflz: "mEaz 25 L7 LJUW
25
dc2022af
DEMO MANUAL DC2022A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SCHEMATIC DIAGRAM
1210
6-14V
POWER INPUT
RUN
OFF
2 1
2 1
RED 698
RED
698
SN74LVC2G34DCK
GND
100n
GND
+3V3
TDA04H0SK1
CONN_DC1613
CONTROL
GNDGND
GND GND GND
GND
24AA02T-I/OT
GND GND
1u
10k 10k
GND
MCP23008-E/ML
GND
GND
GND
1u
10k, 4X
10k
+3V3
+3V3
22u/10V
GND
GND
LTC4313CMS8
100n
GND
GND
249
1u
GND
MALE
FEMALE
+3V3
10k
+12V
10k 10k
+3V3
GND
OPT
LED1 R44
LED2
R42
1
2
3 4
5
6
U12
C50
5
6
7
81
2
3
4
JP3
3
2
1
1
2
3
4
5
6
7
8
9
10
11
12
J2
2
3
1
S1
5
6
4
S1
1
2
3 4
5
U10 C27
R24 R20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
PAD
U9
C29
R16
R23
C45
1
2
3
4 5
6
7
8
U6 C22
R17
C28
TP5
TP6
1 2
3 4
5 6
7 8
9 10
11 12
13 14
JP2
12
34
56
78
910
1112
1314
JP1
R56
TP1
R39 R37
TP2
TP20
TP7
TP12
TP19
TP13
R41
GND
GND
GND
ALERTB
ALERTB
ALERTB
FAULTB
FAULTB
FAULTB
RESETB
EEVCC
+12V
EESCL
EESDA
SDA_IN
SDA_IN
SCL_IN
SCL_IN
SCL
SCL
SDA
SDA
CTRL
SHARE_CLK
SHARE_CLK
UNUSED1
UNUSED2
CTRL_P
SHORT
1 PRODUCTION MIKE P. 02-12-14
1. ALL RESISTORS ARE 1% 0603.
2. ALL CAPACITORS ARE 16V 0603.
3. THE INTERMEDIATE BUS IS VDD=5.0V
1Y1A
2A
GND VCC
2Y
1 2 3 4
ON
+5V (100mA)
SDA
GND
SCL
+3.3V(100mA)
ALERT
GPO_1
OUTEN
GPO_2
GND
AUXSCL
AUXSDA
SCL
GND
SDA VCC
WP
A2
A1
RST\
INT
GP1
GP5
VSS
A0
NC
NC
NC
GP0
GP2
GP3
GP4
GP6
GP7
VDD
SCL
SDA
PAD
ENABLE
SCLO
SCLI
GND
VCC
SDAO
SDAI
READY
CUSTOMER NOTICE
B
SCALE = NONE
LTC CONFIDENTIAL
FOR CUSTOMER
USE ONLY
PCB DES.
APP ENG. www.linear.com
-
L7LJCUEN2
26
dc2022af
DEMO MANUAL DC2022A
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LINEAR TECHNOLOGY CORPORATION 2014
LT 0714 • PRINTED IN USA
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LT C ) provides the enclosed product(s) under the following AS IS conditions:
This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT
OR EVALUATION PURPOSES ONLY and is not provided by LT C for commercial use. As such, the DEMO BOARD herein may not be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety
measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union
directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date
of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU
OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LT C from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or
agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LT C assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LT C currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and
observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LT C applica-
tion engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation