Datenblatt für DC536B Demo Manual von Analog Devices Inc.

l ’ LI” DEMO MANUAL DC536B TECHNOLOGY L7HEWEAR 1
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DEMO MANUAL DC536B
Description
LTC4211
Hot Swap Controller with
Multifunction Current Control
Demonstration circuit 536B is a hot swap controller with
multifunction current control featuring the LT C
®
4211. The
DC536B-A is configured to operate with up to 7A load and
DC536B-B up to 20A load.
The DC536B permits evaluating the LTC4211 during
turn-on and turn-off transients as well as during steady-
state conditions.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
performance summary
The DC536B updates obsoleted components (Q1, D1) in
DC536A.
Design files for this circuit board are available at
http://www.linear.com/demo/DC536B
Specifications are at TA = 25°C
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VCC VCC Supply Voltage Range 2.5 16.5 V
VLKO Internal VCC Undervoltage Lockout VCC Low-To-High Transition 2.13 2.3 2.47 V
VONHI ON Threshold High 1.23 1.316 1.39 V
VONLO ON Threshold Low 1.20 1.236 1.26 V
IGATEUP Gate Pull-Up Current Charge Pump On, VGATE≤0.2V –12.5 –10 –7.5 µA
IGATEDOWN Normal Gate Pull-Down Current
Fast Gate Pull-Down Current
ON Low
FAULT Latched and Circuit Breaker Tripped or in UVLO
130 200
50
270 µA
mA
VCB(FAST) SENSE Trip Voltage (VCC – VSENSE) Fast Comparator Trip 130 150 170 mV
VCB(SLOW) SENSE Trip Voltage (VCC – VSENSE) Slow Comparator Trip 40 50 60 mV
ΔVGATE External N-Channel Gate Drive VGATE – VCC (For VCC = 2.5V)
VGATE – VCC (For VCC = 2.7V)
VGATE – VCC (For VCC = 3.3V)
VGATE – VCC (For VCC = 5V)
VGATE – VCC (For VCC = 12V)
VGATE – VCC (For VCC = 15V)
2.5
4.5
5.0
10
10
8
8
8
10
16
18
18
V
V
V
V
V
V
ICB Circuit Breaker Threshold DC536B-A
DC536B-B
5.7
16
7
20
8.5
24
A
A
operating principles
The LTC4211 is a low voltage hot swap controller that
has a 2.5V to 16.5V operating range and a 17V absolute
maximum operating voltage for the VCC pin. DC536B is
populated for 5V operation, but it can easily be re-adjusted
for any voltage between 2.5V to 16.5V by replacing R3 and
R1 (top resistors in the FB divider and the ON pin voltage
divider). There are two assembly options for load current.
The DC536B-A is populated with an Si4134 MOSFET in an
SO-8 package and a 7mΩ current sense resistor provid-
ing a minimum 5A load current. The DC536B-B has an
FDB8030L MOSFET in the DD package which when used
with a 2.5mΩ sense resistor provides a minimum 16A
load current.
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DEMO MANUAL DC536B
Quick start proceDure
DC536B is easy to set up to evaluate the performance of
the LTC4211. Refer to Figure 1 for proper measurement
equipment setup and follow the procedure below:
1. The DC536B is set up to operate in a 5V system. If
the LTC4211 is to be evaluated at a different operating
condition, follow steps 2 to 5 below, otherwise skip to
step 6.
2. If evaluating at a voltage other than 5V, R3 must
be adjusted for proper RESET response. Select
R3=VMIN•15k/1.223−15k, where VMIN is the mini-
mum output voltage expected for normal operation.
3. The ON pin operates as an input of a precision com-
parator and can accurately provide an adjustable un-
dervoltage lockout. The DC536B is initially configured
to turn on at 4.15VMIN. If 3.3V logic will drive this pin,
R1 can be replaced with a short. If the ON pin will be
used to provide undervoltage lockout, then select R1
such that R1=VUVLO•10k/1.39–10k, where VUVLO is
the minimum turn on voltage. Refer to the data sheet
Figure 3 for common configurations.
4. For evaluating a circuit with up to 20A load, use
DC536B-B board.
5. The soft start and power good (RESET release) delay
is factory set to 2.9ms. This delay can be adjusted by
changing CTIMER; refer to the data sheet Table 1 for
common values and the System Timing section for
more detailed information.
6. After any necessary component changes have been
made, connect a suitable load between VOUT and
GND. This may be a passive resistive load or an active
electronic load box.
7. Connect a power supply capable of supplying 1.5•ILOAD
between the VIN and GND turrets. The minimum cur-
rent capability of the supply must accommodate the
tolerance of the circuit breaker threshold of ±20%. With
the 7mΩ factory installed sense resistor, the overload
circuit breaker will trip at between 5.7A to 8.5A (7A
nominal). Connect the ON/OFF turret to the VIN turret
to enable power to the load. A function generator can
be used to generate a single event and trigger a scope.
The DC536B provides convenient turrets for observing
the FAULT, RESET and VOUT signals.
8. The following experiments can be run:
• Turn on into a nominal load;
• Turn on into an overload;
• Turn on into a short circuit;
• Turn on into a nominal load and increase the load
until the LTC4211 trips off.
A digital storage scope provides a convenient means of
observing the turn on and overload event. Observe the
input or output current using a current probe. A current
transformer can be used to observe the turn on current
transients if a current probe is not available.
Figure 1. Proper Measurement Equipment Setup
DC536 F01
LOAD
GND CH2
OSCILLOSCOPE
CH1
+
–
CURRENT PROBE
EXT TRIGGER
+
–
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DEMO MANUAL DC536B
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
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
VOUT
ON/OFF
VIN
GND
GND
RESET
FAULT
2.5V-16.5V 2.5V-16.5V
VERSION Q1 RS (OHMS) CURRENT (AMPS)
-A
-B
Si4134DY
FDB8030L
0.007
0.0025
7A
20A
[1]
REVISION HISTORY
DESCRIPTION DATE APPROVEDECO REV
PROD
1 05/26/16
REVISION HISTORY
DESCRIPTION DATE APPROVEDECO REV
PROD
1 05/26/16
REVISION HISTORY
DESCRIPTION DATE APPROVEDECO REV
PROD
1 05/26/16
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
DEMO CIRCUIT 536B
Tuesday, May 31, 2016
11
HOT SWAP CONTROLLER WITH
N/A
LTC4211IMS
` \
i b
MULTIFUNCTION CURRENT CONTROL
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
DEMO CIRCUIT 536B
Tuesday, May 31, 2016
11
HOT SWAP CONTROLLER WITH
N/A
LTC4211IMS
` \
i b
MULTIFUNCTION CURRENT CONTROL
SIZE
DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: (408)434-0507
Milpitas, CA 95035
Phone: (408)432-1900
1630 McCarthy Blvd.
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
DEMO CIRCUIT 536B
Tuesday, May 31, 2016
11
HOT SWAP CONTROLLER WITH
N/A
LTC4211IMS
` \
i b
MULTIFUNCTION CURRENT CONTROL
RX
10
D1
SMBJ13A
U1
LTC4211IMS
RESET
1
ON
2
FILTER
3
TIMER
4
GND
5FB 6
GATE 7
SENSE 8
VCC 9
FAULT 10
R4
15K
R5
10K
TP6
TP1
TP4
R1
20K
RG
10
TP7
R2
10K
TP5
C2
4.7nF
R3
41.2K
CX
0.1uF
C3
OPT
R6
10K
TP3CG
OPT
Q1
[1]
2
1
3
4
5
6
7
8
Rs
0.007
TP2
L7 LINE/“2
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DEMO MANUAL DC536B
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2017
LT 0117 • PRINTED IN USA
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LTC) 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 LTC 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
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