Datenblatt für LM5155EVM-FLY User Guide von Texas Instruments

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LM5155EVM-FLY User's Guide
User's Guide
SNVU629–June 2019
LM5155EVM-FLY User's Guide
The LM5155EVM-FLY evaluation module showcases the features and performance of the LM5155 as
wide input non-synchronous flyback controller. The standard configuration is designed to provide a
regulate output of 5V at 4A from an input of 18V to 36V, switching at 250 kHz. This evaluation module is
designed for ease of configuration, enabling the user to evaluate many different applications on the same
module. The PCB is two layers with components populated only on one side. Functionality includes
programmable slope compensation, adjustable soft-start, programmable cycle-by-cycle current limit,
hiccup mode short-circuit protection, and programmable line under voltage lockout.
Contents
1 Introduction ................................................................................................................... 2
1.1 Electrical Parameters............................................................................................... 3
1.2 Configuration Points................................................................................................ 3
2 Application Schematic....................................................................................................... 4
3 EVM Photo.................................................................................................................... 5
4 Test Setup and Procedure.................................................................................................. 5
4.1 EVM Test Setup Schematic ....................................................................................... 5
4.2 Test Equipment ..................................................................................................... 5
4.3 Precautions .......................................................................................................... 6
5 Test Data and Performance Curves....................................................................................... 6
5.1 Efficiency Curve..................................................................................................... 6
5.2 Load Regulation..................................................................................................... 7
5.3 Thermal Performance .............................................................................................. 8
5.4 Steady State Waveforms .......................................................................................... 9
5.5 Start-Up Waveforms .............................................................................................. 11
5.6 Load Transient Waveforms ...................................................................................... 12
5.7 Load Short-Circuit................................................................................................. 13
5.8 AC Loop Response ............................................................................................... 14
6 Design Files................................................................................................................. 15
List of Figures
1 Application Circuit............................................................................................................ 4
2 EVM Photo ................................................................................................................... 5
3 Test Setup ................................................................................................................... 5
4 Efficiency vs ILOAD ............................................................................................................ 6
5 Load Regulation ............................................................................................................. 7
6 VSUPPLY = 36V, ILOAD = 4A, No forced air cooling .......................................................................... 8
7 Steady State, VSUPPLY = 18V, ILOAD = 4A.................................................................................... 9
8 Steady State, VSUPPLY = 24V, ILOAD = 4A.................................................................................... 9
9 Steady State, VSUPPLY = 36V, ILOAD = 4A.................................................................................... 9
10 Start-Up, VSUPPLY = 18V, ILOAD = 0A ....................................................................................... 11
11 Start-Up, VSUPPLY = 18V, ILOAD = 4A ....................................................................................... 11
12 Start-Up, VSUPPLY = 24V, ILOAD = 0A ....................................................................................... 11
13 Start-Up, VSUPPLY = 24V, ILOAD = 4A ....................................................................................... 11
14 Start-Up, VSUPPLY = 36V, ILOAD = 0A ....................................................................................... 11
15 Start-Up, VSUPPLY = 36V, ILOAD = 4A ....................................................................................... 11
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Introduction
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16 Load Transient, VSUPPLY = 18V, ILOAD = 2A to 4A ........................................................................ 12
17 Load Transient, VSUPPLY = 24V, ILOAD = 2A to 4A ........................................................................ 12
18 Load Transient, VSUPPLY = 36V, ILOAD = 2A to 4A ........................................................................ 12
19 Short Circuit Protection.................................................................................................... 13
20 Short Circuit Recovery: VSUPPLY = 36V ................................................................................... 13
21 Control Loop Response VSUPPLY = 18V, ILOAD = 4A...................................................................... 14
22 Control Loop Response VSUPPLY = 24V, ILOAD = 4A...................................................................... 14
23 Control Loop Response VSUPPLY = 36V, ILOAD = 4A...................................................................... 14
24 Top Silkscreen.............................................................................................................. 15
25 Top Layer ................................................................................................................... 15
26 Bottom Layer................................................................................................................ 15
27 Bottom Silkscreen.......................................................................................................... 15
28 LM5155EVM-FLY Schematic............................................................................................. 16
List of Tables
1 Electrical Performance Standard Configuration ......................................................................... 3
2 Test point description ....................................................................................................... 3
3 LM5155EVM-FLY Bill of Materials ....................................................................................... 17
Trademarks
All trademarks are the property of their respective owners.
1 Introduction
The LM5155EVM-FLY supports the following features and performance capabilities:
• Tightly regulated output voltage of 5 V
• High conversion efficiency of > 86% at full load.
• Hiccup mode Short Circuit Protection
• User adjustable secondary side soft-start time
• 10V Auxiliary winding to power VCC pin
• 250kHz Switching frequency
• 2 Layer PCB with components populated on 1 side
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Introduction
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LM5155EVM-FLY User's Guide
1.1 Electrical Parameters
Table 1. Electrical Performance Standard Configuration
Parameter Test Conditions MIN TYP MAX UNIT
INPUT CHARACTERISTICS
Input voltage Range VIN Operation 18 24 36 V
Input voltage turn on VIN(ON) Adjusted by the UVLO/SYNC resistors 17 V
Input voltage turn off VIN(OFF) 16.5 V
OUTPUT CHARACTERISTICS
Output Voltage VOUT 5 V
Maximum Output Current IOUT 4 A
SYSTEM CHARACTERISTICS
Switching frequency 250 kHz
Peak efficiency VIN =18V, IOUT = 1.8A 86.5 %
Junction Temperature, TJ-40 150 C
Transformer Specifications (Wurth 750319733)
Primary Inductance 21 µH
Turns Ratio (3-5):(2-1) 1:1
(3-5):(6:10) tie (6+7,9+10) 2:1
Saturation Current 20% inductance reduction 6.2 A
Leakage Inductance 150 300 nH
1.2 Configuration Points
Table 2 indicates the available test points. These points offer simple probe points to evaluate the
operation of the LM5155.
Table 2. Test point description
Jumper Name Description
TP1 VIN Positive input voltage sense connection
TP2 VOUT+ Positive output voltage sense connection
TP3 PGND Negative input voltage sense connection
TP4 ISO_GND Negative isolated output voltage sense connection
TP5 SW Probe point for the switch node of the LM5155 flyback circuit
TP6 VOUT+ Loop response positive injection point
TP7 VOUT- Loop response negative injection point
TP8 AGND Analog ground connection point
TP9 ISO_GND Isolated ground connection point
J1 - Input power connections
J2 - Output power connections
J3 PGND Power ground connection point
J4
PGOOD (pin 1) Probe voltage on the PGOOD pin of the LM5155
COMP (pin 2) Probe voltage on the COMP pin of the LM5155
SS (pin 3) Probe voltage on the SS pin of the LM5155
VAUX (pin 4) Auxiliary winding voltage
PGND (pin 5) Power ground connection
BIAS VCC GATE
CS
PGND
FB
COMP
SS
RT
PGOOD
AGND
UVLO/SYNC
LM51551
VSUPPLY
ISO_GND
VLOAD
VAUX
VAUX
CIN
RUVLOT
RUVLOB
RT
RCOMP
CCOMP RCOMP
CCOMP
RLED
RPULLUP
RFBT
VREF
RS
NPNS
NAUX
CLOAD
Application Schematic
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2 Application Schematic
The LM5155EVM-FLY is capable of multiple configurations. Figure 1 shows the standard configuration of
the LM5155EVM-FLY for which the parameters in Table 1 are valid.
Figure 1. Application Circuit
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Power Supply Ammeter 1
Voltmeter 1
-+ACOM
VCOM
Electronic Load
-
+
Ammeter 2
ACOM
Voltmeter 2
VCOM
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EVM Photo
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3 EVM Photo
Figure 2. EVM Photo
4 Test Setup and Procedure
4.1 EVM Test Setup Schematic
The correct equipment connections and measurement points are shown in Figure 3
Figure 3. Test Setup
4.2 Test Equipment
Power Supply: The input voltage source (VIN) should be a variable supply capable of 0V to 36V and
source at least 5A.
Multi-meters:
• Voltmeter 1: Input voltage, connect from VIN to PGND
• Voltmeter 2: Output voltage, connect from VOUT to ISO_GND
• Ammeter 1: Input current, must be able to handle 5A. Shunt resistor can be used as needed.
• Ammeter 2: Output current, must be able to handle 5A. Shunt resistor can be used as needed.
Electronic Load: The load should be constant resistance (CR) or constant current (CC) capable. It
should safely handle 4A at 5V.
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ILOAD (A)
Efficiency (%)
Efficiency vs ILOAD
0 0.5 1 1.5 2 2.5 3 3.5 4
40
50
60
70
80
90
100
Effi
VIN = 36V
VIN = 24V
VIN = 18V
Test Setup and Procedure
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Oscilloscope: 20-MHz bandwidth and AC coupling. Measure the output voltage ripple directly across
an output capacitor with a short ground lead. It is not recommended to use a long-leaded ground
connection due to the possibility of noise being coupled into the signal. To measure other waveforms,
adjust the oscilloscope as needed.
4.3 Precautions
CAUTION:
Prolonged operation with low input at full power will cause heating of the diode (D1).
Board surface is hot. Do not touch. Contact may cause burns.
5 Test Data and Performance Curves
Figure 4 through Figure 23 present the typical performance of the LM5155EVM-FLY according to the bill
of materials and the configuration described in Table 1. Based on measurement techniques and
environmental variables measurements might differ slightly than the data presented
5.1 Efficiency Curve
Figure 4. Efficiency vs ILOAD
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ILOAD (A)
VLOAD (V)
VLOAD vs ILOAD
0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4
5.01
5.015
5.02
5.025
5.03
5.035
5.04
5.045
5.05
5.055
5.06
5.065
5.07
5.075
5.08
Load
VIN = 36V
VIN = 24V
VIN = 18V
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Test Data and Performance Curves
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5.2 Load Regulation
Figure 5. Load Regulation
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D1 Q1
Test Data and Performance Curves
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5.3 Thermal Performance
Figure 6. VSUPPLY = 36V, ILOAD = 4A, No forced air cooling
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Test Data and Performance Curves
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5.4 Steady State Waveforms
Figure 7. Steady State, VSUPPLY = 18V, ILOAD = 4A
Figure 8. Steady State, VSUPPLY = 24V, ILOAD = 4A
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Test Data and Performance Curves
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Figure 9. Steady State, VSUPPLY = 36V, ILOAD = 4A
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Test Data and Performance Curves
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5.5 Start-Up Waveforms
Figure 10. Start-Up, VSUPPLY = 18V, ILOAD = 0A Figure 11. Start-Up, VSUPPLY = 18V, ILOAD = 4A
Figure 12. Start-Up, VSUPPLY = 24V, ILOAD = 0A Figure 13. Start-Up, VSUPPLY = 24V, ILOAD = 4A
Figure 14. Start-Up, VSUPPLY = 36V, ILOAD = 0A Figure 15. Start-Up, VSUPPLY = 36V, ILOAD = 4A
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Test Data and Performance Curves
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5.6 Load Transient Waveforms
Figure 16. Load Transient, VSUPPLY = 18V, ILOAD = 2A to 4A
Figure 17. Load Transient, VSUPPLY = 24V, ILOAD = 2A to 4A
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Test Data and Performance Curves
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Figure 18. Load Transient, VSUPPLY = 36V, ILOAD = 2A to 4A
5.7 Load Short-Circuit
Figure 19. Short Circuit Protection Figure 20. Short Circuit Recovery: VSUPPLY = 36V
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Frequency (Hz)
Gain (dB)
Phase (deg)
Control Loop Response
VSUPPLY = 24V, ILOAD = 4A
500 700 1000 2000 3000 5000 7000 10000 20000 30000 50000 100000 200000300000 500000
-60 -180
-40 -120
-20 -60
0 0
20 60
40 120
60 180
Loop
Gain
Phase
Frequency (Hz)
Gain (dB)
Phase (deg)
Control Loop Response
VSUPPLY = 18V, ILOAD = 4A
500 700 1000 2000 3000 5000 7000 10000 20000 30000 50000 100000 200000300000 500000
-60 -180
-40 -120
-20 -60
0 0
20 60
40 120
60 180
Loop
Gain
Phase
Test Data and Performance Curves
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5.8 AC Loop Response
Figure 21. Control Loop Response VSUPPLY = 18V, ILOAD = 4A
Figure 22. Control Loop Response VSUPPLY = 24V, ILOAD = 4A
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Frequency (Hz)
Gain (dB)
Phase (deg)
Control Loop Response
VSUPPLY = 36V, ILOAD = 4A
500 700 1000 2000 3000 5000 7000 10000 20000 30000 50000 100000 200000300000 500000
-60 -180
-40 -120
-20 -60
0 0
20 60
40 120
60 180
Loop
Gain
Phase
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Design Files
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Figure 23. Control Loop Response VSUPPLY = 36V, ILOAD = 4A
6 Design Files
Figure 24. Top Silkscreen Figure 25. Top Layer
Figure 26. Bottom Layer Figure 27. Bottom Silkscreen
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Design Files
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Figure 28. LM5155EVM-FLY Schematic
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Design Files
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Table 3. LM5155EVM-FLY Bill of Materials
Designator Qu
ant
ity
Value Description Package
Reference Part Number Manufacturer
C1 1 680pF CAP, CERM, 680 pF, 100 V, +/-
10%, X7R, 0603 0603 GRM188R72A68
1KA01D MuRata
C2 1 100uF CAP, Polymer Hybrid, 100 uF, 50 V,
+/- 20%, 28 ohm, 10x10 SMD 10x10 EEHZC1H101P Panasonic
C3 1 0.1uF CAP, CERM, 0.1 uF, 50 V, +/- 20%,
X7R, 0805 0805 08055C104MAT
2A AVX
C4, C5 2 1uF CAP, CERM, 1 uF, 50 V, +/- 10%,
X7R, 0805 0805 08055C105KAT
2A AVX
C6 1 4.7uF CAP, CERM, 4.7 uF, 50 V, +/- 10%,
X7R, 1206 1206 C3216X7R1H47
5K160AC TDK
C7, C8 2 270uF CAP, Aluminum Polymer, 270 uF, 25
V, +/- 20%, 0.027 ohm,
D10xL12.7mm SMD
D10xL12.7mm PCV1E271MCL1
GS Nichicon
C9, C10 2 10uF CAP, CERM, 10 uF, 25 V,+/- 10%,
X7R, 1210 1210 885012209028 Wurth Elektronik
C11, C13 2 0.1uF CAP, CERM, 0.1 uF, 25 V, +/- 10%,
X7R, 0603 0603 C1608X7R1E10
4K080AA TDK
C12 1 1000pF CAP, CERM, 1000 pF, 25 V, +/-
10%, X7R, 0603 0603 GRM188R71E10
2KA01D MuRata
C14 1 0.01uF CAP, CERM, 0.01 uF, 50 V, +/- 10%,
X7R, AEC-Q200 Grade 1, 0603 0603 GCM188R71H1
03KA37D MuRata
C15 1 4.7uF CAP, CERM, 4.7 uF, 35 V, +/- 10%,
X5R, 0603 0603 GRM188R6YA4
75KE15D MuRata
C16 1 0.33uF CAP, CERM, 0.33 uF, 100 V, +/-
10%, X7R, C3216X7R2A33
4K130AA TDK
C17 1 1uF CAP, CERM, 1 uF, 16 V, +/- 20%,
X7R, AEC-Q200 Grade 1, 0603 0603 GCM188R71C1
05MA64D MuRata
C18 1 0.1uF CAP, CERM, 0.1 uF, 50 V, +/- 10%,
X7R, 0603 0603 C1608X7R1H10
4K080AA TDK
C19 1 470pF CAP, CERM, 470 pF, 50 V, +/- 10%,
X7R, 0603 0603 GRM188R71H4
71KA01D MuRata
C20 1 4.7uF CAP, CERM, 4.7 µF, 25 V,+/- 10%,
X6S, AEC-Q200 Grade 2, 0603 0603 GRT188C81E47
5KE13D MuRata
C21 1 220pF CAP, CERM, 220 pF, 50 V, +/- 5%,
C0G/NP0, 0603 0603 C0603C221J5G
ACTU Kemet
C22 1 0.01uF CAP, CERM, 0.01 uF, 16 V, +/- 10%,
X7R, 0603 0603 GRM188R71C1
03KA01D MuRata
C24, C26 2 0.22uF CAP, CERM, 0.22 µF, 16 V,+/- 10%,
X7R, AEC-Q200 Grade 1, 0603 0603 CL10B224KO8V
PNC Samsung
C28 1 1000pF CAP, CERM, 1000 pF, 2000 V, +/-
10%, X7R, 1812 1812 1812GC102K1A AVX
D1 1 40V Diode, Schottky, 40 V, 10 A, AEC-
Q101, TO-277A TO-277A SS10P4-M3/87A Vishay-
Semiconductor
D2 1 100V Diode, Switching, 100 V, 0.2 A,
SOD-323 SOD-323 MMDL914-TP Micro Commercial
Components
D3 1 150V Diode, Superfast Rectifier, 150 V, 1
A, SMA SMA ES1C-13-F Diodes Inc.
D4 1 30V Diode, Schottky, 30 V, 0.2 A, SOT-
323 SOT-323 BAT54SWT1G Fairchild
Semiconductor
H1, H2, H3, H4 4 Bumpon, Cylindrical, 0.312 X 0.200,
Black Black Bumpon SJ61A1 3M
J1, J2 2 Terminal Block, 5mm, 2-pole, TH TH, 2-Leads,
Body 10x9mm,
Pin Spacing
5mm
ED350/2 On-Shore
Technology
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Table 3. LM5155EVM-FLY Bill of Materials (continued)
J3, TP9 2 TEST POINT SLOTTED .118", TH Test point, TH
Slot Test point 1040 Keystone
J4 1 Header, 2.54mm, 5x1, Tin, TH Header,
2.54mm, 5x1,
TH
PEC05SAAN Sullins Connector
Solutions
Q1 1 100V MOSFET, N-CH, 100 V, 13 A,
DQJ0008A (VSONP-8) DQJ0008A CSD19533Q5A Texas
Instruments
R1 1 15.0 RES, 15.0, 1%, 0.5 W, 1210 1210 ERJ-
14NF15R0U Panasonic
R2, R11 2 100 RES, 100, 1%, 0.1 W, AEC-Q200
Grade 0, 0603 0603 ERJ-3EKF1000V Panasonic
R3 1 0 RES, 0, 1%, 0.1 W, AEC-Q200
Grade 0, 0603 0603 RMCF0603ZT0R
00 Stackpole
Electronics Inc
R4 1 30.1k RES, 30.1 k, 1%, 1 W, AEC-Q200
Grade 0, 2512 2512 CRCW251230K
1FKEG Vishay-Dale
R5, R8, R10,
R24, R26 5 0 RES, 0, 5%, 0.1 W, AEC-Q200
Grade 0, 0603 0603 ERJ-
3GEY0R00V Panasonic
R6, R9, R13 3 100k RES, 100 k, 1%, 0.1 W, AEC-Q200
Grade 0, 0603 0603 CRCW0603100
KFKEA Vishay-Dale
R7 1 10.0 RES, 10.0, 1%, 0.1 W, AEC-Q200
Grade 0, 0603 0603 CRCW060310R
0FKEA Vishay-Dale
R12 1 0.02 RES, 0.02, 1%, 1 W, 0612 0612 PRL1632-R020-
F-T1 Susumu Co Ltd
R14 1 1.00k RES, 1.00 k, 1%, 0.1 W, 0603 0603 ERJ-3EKF1001V Panasonic
R16, R22 2 9.76k RES, 9.76 k, 1%, 0.1 W, AEC-Q200
Grade 0, 0603 0603 CRCW06039K7
6FKEA Vishay-Dale
R17 1 86.6k RES, 86.6 k, 1%, 0.1 W, AEC-Q200
Grade 0, 0603 0603 CRCW060386K
6FKEA Vishay-Dale
R18 1 4.99k RES, 4.99 k, 1%, 0.1 W, AEC-Q200
Grade 0, 0603 0603 CRCW06034K9
9FKEA Vishay-Dale
R19 1 30.0k RES, 30.0 k, 1%, 0.1 W, 0603 0603 RC0603FR-
0730KL Yageo
R20, R21 2 1.00k RES, 1.00 k, 0.1%, 0.1 W, AEC-
Q200 Grade 0, 0603 0603 ERA3AEB102V Panasonic
T1 1 21uH Transformer, 21 uH, SMT 13.97x18.25mm 750317933 Wurth Elektronik
TP1, TP2 2 Test Point, Miniature, Red, TH Red Miniature
Testpoint 5000 Keystone
TP3, TP4, TP8 3 Test Point, Miniature, Black, TH Black Miniature
Testpoint 5001 Keystone
TP5 1 PC Test Point, SMT PC Test Point,
SMT 5017 Keystone
U1 1 2.2-MHz Wide Input
Nonsynchronous Boost, Sepic,
Flyback Controller, DSS0012B
(WSON-12)
DSS0012B LM51551DSST Texas
Instruments
U2 1 Optocoupler, 2.5 kV, 100-200%
CTR, SMT PS2811-1 PS2811-1-M-A California Eastern
Laboratories
U3 1 Low-Voltage (1.24V) Adjustable
Precision Shunt Regulators, 3-pin
SOT-23, Pb-Free
DBZ0003A LMV431BIMF/N
OPB Texas
Instruments
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