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Table of Contents
User’s Guide
Using the UCC28C56EVM-066 High-Density 40-W
Auxiliary Power Supply for 800-V Traction Inverters
Table of Contents
1 General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines............................................ 2
2 Description.............................................................................................................................................................................. 3
2.1 EVM Electrical Performance Specifications....................................................................................................................... 4
3 Schematic Diagram................................................................................................................................................................ 5
4 EVM Setup and Operation......................................................................................................................................................6
4.1 Recommended Test Equipment......................................................................................................................................... 6
4.2 External Connections......................................................................................................................................................... 6
4.3 EVM Test Points.................................................................................................................................................................8
5 Performance Data................................................................................................................................................................... 9
5.1 Efficiency Versus Load, 10% to 100% Load.......................................................................................................................9
5.2 Efficiency Versus VIN at 100% Load..................................................................................................................................9
5.3 Power Loss Versus Load, 10% to 100% Load................................................................................................................. 10
5.4 Load Regulation, 10% to 100% Load...............................................................................................................................10
5.5 Light Load Regulation, 0-mA to 200-mA Load................................................................................................................. 11
5.6 Line Regulation, Various Loads........................................................................................................................................11
5.7 Startup Waveforms...........................................................................................................................................................12
5.8 Shutdown Waveforms...................................................................................................................................................... 14
5.9 Output Voltage Ripple...................................................................................................................................................... 16
5.10 Steady State Switching Waveforms............................................................................................................................... 18
5.11 Transient Load Waveforms.............................................................................................................................................20
5.12 Over Current and Short Circuit Protections....................................................................................................................22
5.13 Stability Measurements..................................................................................................................................................24
5.14 Thermal Measurements................................................................................................................................................. 26
6 Assembly and Printed Circuit Board (PCB)....................................................................................................................... 30
7 Bill of Materials (BOM)..........................................................................................................................................................32
8 Revision History................................................................................................................................................................... 35
Trademarks
All trademarks are the property of their respective owners.
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General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
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1 General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety
Guidelines
WARNING
Always follow TI’s setup and application instructions, including use of all interface components within their
recommended electrical rated voltage and power limits. Always use electrical safety precautions to help
ensure your personal safety and those working around you. Contact TI's Product Information Center http://
support/ti./com for further information.
Save all warnings and instructions for future reference.
WARNING
Failure to follow warnings and instructions may result in personal injury, property damage or death
due to electrical shock and burn hazards.
The term TI HV EVM refers to an electronic device typically provided as an open framed, unenclosed printed
circuit board assembly. It is intended strictly for use in development laboratory environments, solely for qualified
professional users having training, expertise and knowledge of electrical safety risks in development and
application of high voltage electrical circuits. Any other use and/or application are strictly prohibited by Texas
Instruments. If you are not suitable qualified, you should immediately stop from further use of the HV EVM.
1. Work Area Safety
a. Keep work area clean and orderly.
b. Qualified observer(s) must be present anytime circuits are energized.
c. Effective barriers and signage must be present in the area where the TI HV EVM and its interface
electronics are energized, indicating operation of accessible high voltages may be present, for the
purpose of protecting inadvertent access.
d. All interface circuits, power supplies, evaluation modules, instruments, meters, scopes and other related
apparatus used in a development environment exceeding 50Vrms/75VDC must be electrically located
within a protected Emergency Power Off EPO protected power strip.
e. Use stable and nonconductive work surface.
f. Use adequately insulated clamps and wires to attach measurement probes and instruments. No
freehand testing whenever possible.
2. Electrical Safety
As a precautionary measure, it is always a good engineering practice to assume that the entire EVM may
have fully accessible and active high voltages.
a. De-energize the TI HV EVM and all its inputs, outputs and electrical loads before performing any
electrical or other diagnostic measurements. Revalidate that TI HV EVM power has been safely deenergized.
b. With the EVM confirmed de-energized, proceed with required electrical circuit configurations, wiring,
measurement equipment connection, and other application needs, while still assuming the EVM circuit
and measuring instruments are electrically live.
c. After EVM readiness is complete, energize the EVM as intended.
WARNING
While the EVM is energized, never touch the EVM or its electrical circuits, as they could be at
high voltages capable of causing electrical shock hazard.
3. Personal Safety
a. Wear personal protective equipment (for example, latex gloves or safety glasses with side shields) or
protect EVM in an adequate lucent plastic box with interlocks to protect from accidental touch.
Limitation for safe use:
EVMs are not to be used as all or part of a production unit.
2
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Description
2 Description
The UCC28C56EVM-066 is a highly efficient primary-side controlled (using an AUX winding) flyback auxiliary
power supply for EV/HEV automotive power trains. The design provides 15.2-VTYP, 40-W output for 800-V
battery systems. It will deliver 40 W over the input voltage range from 125 V to 1000 V. The exact output
voltage is load dependent. From 40-V to 125-V input the design will supply 20 W. The EVM utilizes a 1700-V
silicon-carbide (SiC) MOSFET, making it ideal for 800-V battery systems.
The EVM is a 4-layer board with the top and bottom layers dedicated to signal and power routing. The two
inner layers are used only to route test points. In effect, this is a low-cost two-layer PCB. The controller and
it's associated power components are tightly compacted into a 50 mm x 86 mm area, highlighted by the
white rectangle show on the top silkscreen. Note, C1 is not included with the critical components because it's
considered to be part of the general VIN bypass capacitors in the system.
Every effort was made to use automotive qualified components. An automotive qualified 1700-V SiC MOSFET
is listed in the BOM. The flyback transformer should be automotive qualified with consultation from the given
transformer manufacturer.
Figure 2-1. UCC28C56EVM-066, HVP066A, Top View
Figure 2-2. UCC28C56EVM-066, HVP066A, Bottom View
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Description
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2.1 EVM Electrical Performance Specifications
Table 2-1. EVM Electrical Specifications, VIN = 800 Vdc, TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
40
800
1000
V
INPUT CHARACTERISTICS
VIN
Input voltage range
VVDD_ON
VDD start voltage
17.6
18.8
20.0
V
VVDD_OFF
VDD stop voltage
15.0
15.5
16.0
V
Input current at full load
VIN = 1000 V, IOUT = 2.7 A
-
52
IIN_FL
-
VIN = 40 V, IOUT = 1.3 A
-
590
-
IIN_NL
Input current at no load
VIN = 1000 V
-
0.8
-
VIN = 40 V
-
13
-
100% load output
125 V ≤ VIN ≤ 1000 V
-
15.2
-
50% load output
40 V ≤ VIN ≤ 1000 V
-
15.6
-
10% load output
40 V ≤ VIN ≤ 1000 V
-
16.3
-
No load output
40 V ≤ VIN ≤ 1000 V
-
19.3
-
125 V ≤ VIN ≤ 1000 V
0
-
2.7
40 V ≤ VIN ≤ 125 V
0
-
1.3
250 mA ≤ IOUT ≤ 2.7 A
-
±3.5
-
0 mA ≤ IOUT ≤ 200 mA
4
-
25
VIN = 1000 V, IOUT = 2.7 A, 1 MHz BWL
-
400
-
VIN = 50 V, IOUT = 1.3 A, 1 MHz BWL
-
280
-
mA
mA
OUTPUT CHARACTERISTICS
VOUT
V
IOUT
VOUT load current range
A
VOUT_REG
Load regulation
VOUT_RIPPLE
PK-to-PK AC ripple
VOUT_SS_DELAY
VIN applied to when VOUT
begins rising from 0 V
VIN = 50 V, IOUT = 1.3 A
-
255
-
VIN = 1000 V, IOUT = 2.7 A
-
230
-
VOUT_SS_trise
VOUT soft start, rise time
IOUT = 2.7 A
-
10
-
ms
VOUT_SS_OS
VOUT soft start overshoot
VIN = 1000 V, IOUT = 2.7 A
-
3.5
-
%
PMAX
Maximum output power
125 V ≤ VIN ≤ 1000 V
-
-
40
40 V ≤ VIN ≤ 125 V
-
-
20
VIN = 400 V, IOUT = 2.7 A
-
87.4
-
VIN = 800 V, IOUT = 2.7 A
-
86.1
-
%
mVPP
ms
W
SYSTEMS CHARACTERISTICS
4
η
Full load efficiency
%
fSW
Switching frequency
VIN = 800 V, IOUT = 2.7 A
-
42.5
-
kHz
ICS(OCL)
Current sense limit
RCS = 455 mΩ
-
2.2
-
A
fCO
Bandwidth
VIN = 800 V, IOUT = 2.7 A
-
625
-
VIN = 50 V, IOUT = 0.25 A
-
3950
-
PM
Phase Margin
VIN = 800 V, IOUT = 2.7 A
-
105
-
VIN = 50 V, IOUT = 0.25 A
-
87
-
GM
Gain Margin
VIN = 800 V, IOUT = 2.7 A
-
40
-
VIN = 50 V, IOUT = 0.25 A
-
25
-
ΔTMAX
Max. temp. rise over TPCB
T1 at 800 VIN, IOUT = 2.7 A, 40 W
-
48.9
-
T1 at 1000 VIN, IOUT = 2.7 A, 40 W
-
55.3
-
Hz
deg
dB
°C
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Schematic Diagram
3 Schematic Diagram
VIN
C1
3
C4
1.5pF
1
C2
0.22uF
C3
0.22uF
0.22uF
D1
160V
Q1
HV_GND
2
D2
130V
HV_GND
HV_GND
HV Clamp
R1
1.0M
D3
160V
3
1
Q2
2
D5
22V
D6
130V
R2
62
HV Startup for VDD
R3
1.0M
R28
62
D8
130V
D7
1.6kV
9
8
1
1
1
D14
40V
D12
60V
R13
20.0k
HV_GND
AUX
C12
22uF
HV_GND
C13
4.7uF
HV_GND
1
3
4
D13
200V
FB
C16
100nF
C15
1000pF
HV_GND
2.5V
COMP
1
C19
22nF
HV_GND
C20
100pF
3
7
VDD
R14
39.2
RT/CT
FB
OUT
6
OUT
C18
1uF
COMP
CS
5
GND
1
R19
20.0k
HV_GND
Voltage
Feedback
Slope Compensation
2
1
R16
127
Q7
Current Filtering
CS
C21
2.2µF
R22
4.02k
C22
100pF
2
Q8
HV_GND
R21
1.00k
1
R27
127
HV_GND
Iso_GND
C24
2200pF
C8
10uF
R8
100k
Q5
1
R15
44.2k
HV_GND
Iso_GND
Iso_GND
Q6
HV_GND
Rsense
C23
22pF
3
R23
15.0k
HV_GND
Gate Drive
R17
2.55k
HV_GND
R18
324k
Gate_FET
R26
2.00k
Leading Edge
Blanking
R20
3.48k
Current
Sensing
R24
0.91
18V
Iso_GND
C7
10uF
C14
2200pF
R11
10.0
3
VREF
2
VREF
2
7
12
2
4
NC
NC
NC
3
RT/CT
8
2
5V
D10
C10
1000uF
3
VREF
C9
1000uF
+
200V
HV_GND
HV_GND
+
D11
NC
5
AUX Supply
U1
UCC28C56H-Q1
R12
40.2k
11
10
6
Q3
2
C11
47nF
3
SW
R10
0
3
VDD
1
Q4
2
Soft Start
R6
10.0k
Disable HV
Startup
R9
10.0k
HV_GND
3
C17
330nF
C6
R7
HV_GND
Vout
2
2
D9
18V
C5
1000pF
Lpri=550 µH
Npri:Nsec=10.2:1
Npri:Naux=8.5:1
1
HV_GND
R4
100
T1
R5
1.00k
2
D4
130V
R25
0.91
HV_GND
HV_GND
HV_GND
Figure 3-1. UCC28C56EVM-066 Schematic.
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EVM Setup and Operation
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4 EVM Setup and Operation
Safety: This evaluation module is not encapsulated and there are accessible voltages that are greater than 50
VDC.
Isolation Input Transformer: A suitably rated 1:1 isolation transformer shall be used on the input(s) to this EVM
and be constructed in a manner in which the primary winding(s) are separated from the secondary winding(s) by
reinforced insulation, double insulation, or a screen connected to the protective conductor terminal.
WARNING
•
•
•
•
If you are not trained in the proper safety of handling and testing power electronics please do not
test this evaluation module.
While the EVM is energized, never touch the EVM or its electrical circuits, as they could be at
high voltages capable of causing electrical shock hazard.
Caution Hot surface. Contact may cause burns. Do not touch!
Read this user's guide thoroughly before making test.
WARNING
Caution: Do not leave EVM powered when unattended.
4.1 Recommended Test Equipment
1. VIN: DC power supply, 40 V to 1000 V output, capable of supplying up to 2 A
2. IOUT: Electronic load, capable of supporting at least 25 V with loads of 0 A to 3.0 A
3. Two DVMs measuring DC voltage
a. The DVM monitoring VIN+ must be able to withstand 1000 Vdc
4. Two DVMs measuring DC current
5. Oscilloscope: 4 channel, 500 MHz or better
a. Recommend three high voltage probes (rated to 1000 V CAT II, 2500 Vpk
b. Recommend one differential probe (±140V low range at 1/20, ±1400V high range at 1/200)
6. Thermal camera (optional) or thermocouple to measure T1 case temperature
4.2 External Connections
The UCC28C56EVM-066 EVM utilizes screw terminals for quickly connecting to VIN and VOUT. Connecting
the appropriate ammeters and voltmeters, as shown in Figure 4-1, allows accurate EVM efficiency and load
regulation measurements.
4.2.1 Setup and Connection of Test Equipment
1. Before connecting it to the EVM, turn on and adjust the VIN power supply to 50 V and set its current
limit to 1.5 A.
2. Turn off/disable the VIN power supply.
3. Connect the VIN power supply to J2 (VIN+) and J1 (GND).
4. Connect the variable load to J4 (VOUT+) and J3 (ISO_GND).
5. Set the load to the constant current (CC) and 0.25 A. Enable the load.
6
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EVM Setup and Operation
4.2.2 Power On for the First Time
1.
2.
3.
4.
5.
6.
Verify VIN is off/disabled and no voltage is applied to the UUT.
Connect oscilloscope probes to VIN (20 V/DIV), VDD (4 V/DIV), and COMP (2 V/DIV).
Connect the differential probe to VO and ISO_GND at low range, 1/20 (scaled to 4 V/DIV).
Set the oscilloscope to single-trigger on VIN rising at 25 V. Set a time base of 50 ms/DIV.
Verify that the load is set to 0.25 A and is still enabled.
Turn on the VIN supply at 50 V. The oscilloscope should trigger and produce the waveforms shown in figure
5-6. If your result is the same as figure 5-6 then your EVM is functioning correctly, thus far. If your result
does not resemble figure 5-6 then stop. Troubleshoot the EVM at 50 VIN. Do not increase VIN until after
troubleshooting.
7. When VIN is 50 V only and with 0.25 A load, verify the following DC measurements at the test points:
8.
9.
10.
11.
a. VOUT+ (yellow TP) to ISO_GND ≈ 16.4 Vdc
b. V_AUX (white TP) to GND ≈ 18.7 Vdc
c. VDD (white TP) to GND ≈ 18.6 Vdc
d. VREF (white TP) to GND = 5.0 Vdc
e. FB (white TP) to GND = 2.5 Vdc
Turn off the VIN supply.
Increase VIN to 400 V with 1.3 A load and repeat steps 4 to 8. Verify that VOUT is OK at this condition.
Turn off the VIN supply.
Increase VIN to 800 V. At 800 V and 0.25 A load [and 2.7 A load] your result should be similar to figure
5-7 [and figure 5-8]. If your results are the same as figure 5-7 and 5-8 at 800 V then your EVM is 100%
functioning correctly and you can proceed with other tests.
VIN DMM
Digital
Mulmeter
1000V Input
Capable
GND
TP
VIN
TP
VO DMM
Digital
Mul meter
for Voltage
Measureme
nt
ISO_GND TP
VO TP
VIN+
Lab HV
DC Power
Supply
ISO_GND
Digital
Mulmeter
for Current
Measureme
nt
GND
VOUT
Digital
Mulmeter
for Current
Measureme
nt
Electronic
Load
Figure 4-1. UCC28C56EVM-066, Recommended Efficiency and Typical Test Setup
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EVM Setup and Operation
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4.3 EVM Test Points
Table 4-1 describes the various EVM test points, allowing easy access for connecting oscilloscope probes, DVM
test leads and wire connections to lab test equipment.
Table 4-1. Input, Output, Test Point (I/O/TP) Description
8
PIN
I/O/TP
COLOR
J1
-
Green
J2
I
J3
DESCRIPTION
MIN
TYP
MAX
GND
-
0V
-
Green
VIN+
40 V
800 V
1000 V
-
Green
ISO_GND
-
0V
-
J4
O
Green
VOUT+ (depends on load)
14.5 V
15.5 V
20 V
VDD
TP
White
Analog controller bias supply
-
18.6 V
-
VREF
TP
White
Controller reference output
4.9 V
5V
5.1 V
COMP
TP
White
Error amplifier output
0V
-
5V
VFB
TP
White
Inverting input to the error amplifier
2.45 V
2.5 V
2.55 V
RT/CT
TP
White
Fixed frequency triangle oscillator
0.9 VTYP
1.4 VPP
2.3 VPP
VIN
TP
Red
40 V
-
1000 V
V_AUXL
TP
White
AUX voltage after a 10 ohm series resistor
-
18.7 V
-
V_AUX
TP
White
AUX output voltage
-
18.7 V
-
VG
TP
White
Voltage at the gate of the SiC MOSFET
0V
18 V
-
SWN
TP
Silver
Switching node (bottom of the PCB)
0V
-
VIN + 480 V
VO
TP
Yellow
Output voltage
14.5 V
15.5 V
20 V
GND x5
TP
Black
GND
-
0V
-
ISO_GND x2
TP
Black
Isolated GND
-
0V
-
Input voltage
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Performance Data
5 Performance Data
5.1 Efficiency Versus Load, 10% to 100% Load
90%
85%
Efficiency (%)
80%
75%
70%
65%
60%
55%
800 VIN
1000 VIN
50%
0.25
0.5
0.75
1
1.25 1.5 1.75
Load Current (A)
2
2.25
2.5
2.75
Figure 5-1. UCC28C56EVM Efficiency vs Load
5.2 Efficiency Versus VIN at 100% Load
95%
92.5%
Efficiency (%)
90%
87.5%
85%
82.5%
80%
77.5%
75%
200
300
400
500
600
700
VIN (V)
800
900
1000
Figure 5-2. UCC28C56EVM Efficiency Versus VIN at 100% Load
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Performance Data
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5.3 Power Loss Versus Load, 10% to 100% Load
8
7
Power Loss (W)
6
5
4
3
2
1
800 VIN
1000 VIN
0
0.25
0.5
0.75
1
1.25 1.5 1.75
Load Current (A)
2
2.25
2.5
2.75
Figure 5-3. UCC28C56EVM Power loss versus load
5.4 Load Regulation, 10% to 100% Load
4%
800 VIN
1000 VIN
3%
Output Error (%)
2%
1%
0
-1%
-2%
-3%
-4%
0.25
0.5
0.75
1
1.25 1.5 1.75
Load Current (A)
2
2.25
2.5
2.75
Figure 5-4. UCC28C56EVM Load Regulation, 10% to 100% Load
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Performance Data
5.5 Light Load Regulation, 0-mA to 200-mA Load
24%
200 VIN
400 VIN
600 VIN
800 VIN
1000 VIN
22%
20%
Output Error (%)
18%
16%
14%
12%
10%
8%
6%
4%
2%
0
0
0.05
0.1
Load Current (A)
0.15
0.2
Figure 5-5. UCC28C56EVM Load Regulation, No Load to 200-mA Load
5.6 Line Regulation, Various Loads
5%
0.5
1.3
2.0
2.7
4%
Output Error (%)
3%
A
A
A
A
Load
Load
Load
Load
2%
1%
0
-1%
-2%
-3%
-4%
-5%
50
150
250
350
450 550 650
Input Voltage (V)
750
850
950
Figure 5-6. UCC28C56EVM Line regulation, various loads
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Performance Data
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5.7 Startup Waveforms
Figure 5-7. Start-Up 1: VIN = 50 V, Load = 0.25 A
Figure 5-8. Start-Up 2: VIN = 50 V, Load = 1.3 A
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Performance Data
Figure 5-9. Start-Up 3: VIN = 1000 V, Load = 0.25 A
Figure 5-10. Start-Up 4: VIN = 1000 V, Load = 2.7 A
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Performance Data
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5.8 Shutdown Waveforms
Figure 5-11. Shutdown, VIN Removal: VIN = 50 V, Load = 0.25 A
Figure 5-12. Shutdown, VIN Removal: VIN = 50 V, Load = 1.3 A
14
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Performance Data
Figure 5-13. Shutdown, VIN Removal: VIN = 1000 V, Load = 0.25 A
Figure 5-14. Shutdown, VIN Removal: VIN = 1000 V, Load = 2.7 A
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Performance Data
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5.9 Output Voltage Ripple
Figure 5-15. Output Voltage Ripple: VIN = 50 V, Load = 0.25 A
Figure 5-16. Output Voltage Ripple: VIN = 50 V, Load = 1.3 A
16
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Performance Data
Figure 5-17. Output Voltage Ripple: VIN = 1000 V, Load = 0.25 A
Figure 5-18. Output Voltage Ripple: VIN = 1000 V, Load = 2.7 A
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Performance Data
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5.10 Steady State Switching Waveforms
Figure 5-19. Steady State: VIN = 50 V, Load = 0.25 A
Figure 5-20. Steady State: VIN = 50 V, Load = 1.3 A
18
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Performance Data
Figure 5-21. Steady State: VIN = 1000 V, Load = 0.25 A
Figure 5-22. Steady State: VIN = 1000 V, Load = 2.7 A
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Performance Data
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5.11 Transient Load Waveforms
Figure 5-23. Transient Response: VIN = 50 V, Load = 100 mA to 650 mA at 25 Hz, 50% duty
Figure 5-24. Transient Response: VIN = 50 V, Load = 100 mA to 1.3 A at 25 Hz, 50% duty
20
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Performance Data
Figure 5-25. Transient Response: VIN = 800 V, Load = 0.25 A to 1.3 A at 25 Hz, 50% duty
Figure 5-26. Transient Response: VIN = 800 V, Load = 0.25 A to 2.7 A at 25 Hz, 50% duty
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Performance Data
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5.12 Over Current and Short Circuit Protections
Figure 5-27. 50 VIN, Startup with output shorted to ground
Figure 5-28. 50 VIN, Output shorted to ground during operation
22
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Figure 5-29. 800 VIN, Startup with output shorted to ground
Figure 5-30. 800 VIN, Output shorted to ground during operation
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Performance Data
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5.13 Stability Measurements
Figure 5-31. Bode Plot: VIN = 50 V, Load = 0.25A
Figure 5-32. Bode Plot: VIN = 50 V, Load = 1.3 A
24
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Figure 5-33. Bode Plot: VIN = 800 V, Load = 0.25 A
Figure 5-34. Bode Plot: VIN = 800 V, Load = 2.7 A
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Performance Data
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5.14 Thermal Measurements
Test Methodology:
As shown in figure 5-35, the UCC28C56H EVM was placed in a protective enclosure to isolate the high-voltage
(VIN > 50V) from test personnel. The enclosure did not provide any forced air movement (i.e. there are no fans).
The following thermal results should be considered worst-case due to the dead-air environment. For each load
condition, the soak time was 30 – 45 minutes.
The hottest component on the EVM is the transformer. The transformer temperature was taken two ways: (1) by
a thermocouple taped directly to the top of the windings (see figure 5-36), and (2) using a thermal camera and
black electrical tape placed directly over the thermocouple/windings (see figure 5-37). The two methods provided
results within 2 °C of each other. Temperature of the output rectifier diode and switching MOSFET were taken
only with the thermal camera. The PCB temperature near the transformer was measured with a thermocouple.
Figure 5-35. UCC28C56H EVM in plexiglass enclosure for HV safety. Virtually no airflow.
Figure 5-36. Thermocouple taped to windings
26
Figure 5-37. Black tape for thermal camera
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Performance Data
Transformer Temperature (C)
Transformer Temperature vs Load
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
200 VIN
400 VIN
600 VIN
800 VIN
1000 VIN
0
0.25 0.5 0.75
1 1.25 1.5 1.75
Load Current (A)
2
2.25 2.5 2.75
Figure 5-38. Transformer temperature vs load
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Table 5-1. Thermal Results: VIN = 50 V, 1.3 A, 20 W load
Transformer & PCB Temperatures:
Thermal camera measurement: 55.7 °C
Thermocouple measurement: 53.9 °C
Average temperature rise: 54.8 °C
PCB temperature: 30.6 °C
Transformer TRISE = 53.9 °C - 30.6 °C = 23.3 °C
Figure 5-39. Transformer temperature is 55.7°C
Figure 5-40. Output diode temperature is 43.6°C
28
Figure 5-41. MOSFET temperature is 46.3°C
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Performance Data
Table 5-2. Thermal Results: VIN = 800 V, 2.7 A, 40 W load
Transformer & PCB Temperatures:
Thermal camera measurement: 86.7 °C
Thermocouple measurement: 86.2 °C
Average temperature rise: 86.5 °C
PCB temperature: 37.6 °C
Transformer TRISE = 86.5 °C - 37.6°C = 48.9 °C
Figure 5-42. Transformer temperature is 86.7°C
Figure 5-43. Output diode temperature is 61.5°C
Figure 5-44. MOSFET temperature is 72.8°C
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Assembly and Printed Circuit Board (PCB)
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6 Assembly and Printed Circuit Board (PCB)
The UCC28C56EVM-066 is designed using a four-layer PCB. Only traces on the top and bottom layers are used
for UCC28C56 connections, so the EVM is basically a two-layer PCB. The two middle layers are dedicated to
routing only the test points.
Figure 6-1. UCC28C56EVM-066, PCB Top Layer, Assembly
Figure 6-2. UCC28C56EVM-066, Signal Layer 1, Routing for test points only
30
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Assembly and Printed Circuit Board (PCB)
Figure 6-3. UCC28C56EVM-066, Signal Layer 2, Routing for test points only
Figure 6-4. UCC28C56EVM-066, PCB Bottom Layer, Assembly (mirrored view)
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Bill of Materials (BOM)
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7 Bill of Materials (BOM)
Table 7-1. UCC28C56EVM-066 Bill of Materials
Item
#
32
Designator
Quantity
Value
Description
PackageReference
Printed Circuit Board
PartNumber
Manufacturer
1
!PCB1
1
UCC28C56EVM066
Any
2
C1, C2, C3
3
120nF
Capacitor, Film, 0.12uF, 1600Vdc,
Radial, AEC-Q101
RADIAL
R75TN312050H3
J
KEMET
3
C4
1
1.5pF
CAP, CERM, 1.5 pF, 1000 V, COG/
NPO, 1206
1206
1206Y1K01P50D
AR
Knowles Syfer
4
C5
1
1000pF
CAP, CERM, 1000 pF, 630 V, +/- 5%, 1206
C0G/NP0, 1206
GRM31B5C2J102 MuRata
JW01L
5
C7, C8
2
10uF
CAP, CERM, 10 uF, 50 V, +/- 10%,
X7R, 1210
1210
CL32B106KBJNN Samsung
WE
6
C9, C10
2
1mF
CAP, AL, 1000 uF, 25 V, +/- 20%,
0.033 ohm, TH, AEC-Q200
RADIAL
EEU-FK1E102L
Panasonic
7
C11
1
0.047uF
CAP, CERM, 0.047 uF, 50 V, +/10%, X7R, AEC-Q200 Grade 1,
0603
0603
CGA3E2X7R1H4
73K080AA
TDK
8
C12
1
22uF
CAP, AL, 22 uF, 35 V, +/- 20%, 0.36
ohm, AEC-Q200, SMD
SMT Radial D
35TZV22M6.3X6.
1
Rubycon
9
C13
1
4.7uF
CAP, CERM, 4.7 uF, 50 V, +/- 10%,
X7R, AEC-Q200 Grade 1, 1210
1210
CGA6P3X7R1H4
75K250AB
TDK
10
C14, C24
2
2200pF
CAP, CERM, 2200 pF, 4000 V,+/10%, X7R, 1812, AEC-Q200
1812
1812Y4K00222K
ST
Knowles Syfer
11
C15
1
1000pF
CAP, CERM, 1000 pF, 50 V, +/- 10%, 0805
X7R, 0805
CC0805KRX7R9
BB102
Yageo America
12
C16
1
0.1uF
CAP, CERM, 0.1 uF, 50 V, +/- 10%,
X7R, 0805
0805
CC0805KRX7R9
BB104
Yageo
12
C17
1
0.33uF
CAP, CERM, 0.33 uF, 16 V, +/- 10%,
X7R, 0805
0805
CL21B334KOCN
NNC
Samsung
13
C18
1
1uF
CAP, CERM, 1 uF, 50 V, +/- 10%,
X7R, 1206
1206
UMK316B7105KL Taiyo Yuden
HT
14
C19
1
0.022uF
CAP, CERM, 0.022 uF, 50 V, +/10%, X7R, 0805
0805
CC0805KRX7R9
BB223
Yageo America
15
C20, C22
2
100pF
CAP, CERM, 100 pF, 50 V, +/- 5%,
C0G/NP0, 0805
0805
CC0805JRNPO9
BN101
Yageo America
16
C21
1
2.2uF
CAP, CERM, 2.2 µF, 25 V,+/- 10%,
X7R, AEC-Q200 Grade 1, 0805
0805
GCM21BR71E22
5KA73L
MuRata
17
C23
1
22pF
CAP, CERM, 22 pF, 50 V, +/- 5%,
C0G/NP0, 0805
0805
CC0805JRNPO9
BN220
Yageo
18
D1, D3
2
160V
Diode, TVS, Uni, 160V, 259VC, AEC- SMC
Q101, SMC
SMCJ160AHE3_
A/I
Vishay
Semiconductor
19
D2, D4, D6,
D8
4
130V
Diode, Zener, 130 V, 200 mW,
SOD-323F, AEC-Q101
SOD-323F
UDZLVFHTE-171
30
Rohm
20
D5
1
22V
Diode, Zener, 22 V, 5%, 200 mW,
SOD-323, AEC-Q101
SOD-323
BZX384C22HE3-18
21
D7
1
1.6kV
Diode, Avalanche, 1.6kV, 1.5A, AEC- DO-214AC
Q101, SMA
22
D9
1
18V
Diode, Zener, 18 V, 4%, 200 mW,
AEC-Q101, SOD-323
23
D10
1
18V
24
D11
1
25
D12
26
Alternate
PartNumber
Alternate
Manufaturer
1206N1R5D102C Walsin
T
HV1812Y102KXV Vishay Vitramon
ATHV
SMCJ160A-TP
Micro Commercial
Co
Vishay
Semiconductor
SZMM3Z22VST1
G
ON Semi
BYG10YHE3_A/I
Vishay
SMCJ160A-TP
Micro Commercial
Co.
SOD-323
GDZ18B-HE3-18
Vishay
DDZ9705S-7
Diodes, Inc.
Diode, Zener, 18 V, 1 W, ±6.39%,
SMT, PMDTM, AEC-Q101
SOD-128
PDZVTFTR18B
ROHM
ZMY18-GS18
Vishay
Semiconductor
200V
Diode Array, Comon Cathode,
Schottky, 200V, 40A, AEC-Q101
TO-247AD
MBR40200PTH
Taiwan
Semiconductor
MBR90200WT
SMC Diode
Solutions
1
60V
Diode, Schottky, 60 V, 1 A, SMA,
AEC-Q101
SMA
SS16HE3_B/H
Vishay
Semiconductor
SS16AU_R1_000A1
Panjit
International
D13
1
200V
Diode, Standard Recovery, 200 V, 1
A, SMA, AEC-Q101
SMA
S1DHE3_A/H
Vishay
Semiconductor
27
D14
1
40V
Diode, Schottky, 30 V, 30 mA, AECQ101, SOD-323
SOD-323
SD101CWSHE3-08
Vishay
RB501V-40-TP
Micro Commercial
Co
28
H1
1
Black
Anodize
d
Heat Sink TO-247 Aluminum 5.0W
@ 60°C Board Level, Vertical
PTH_HEATSINK_2
0MM47_25MM0
C247-025-1AE
Ohmite
C247-025-1VE
Ohmite
29
HW1, HW2,
HW3, HW4,
HW5
5
SJ61A6
3M
30
J1, J2, J3, J4
4
Terminal Block, 5.08 mm, 2x1, TH
1715721
Phoenix Contact
31
KIT1
0
Mounting Kit, DISCARD the TO_220
thermal pad, Use SILPAD1 instead
4880SG
Aavid Thermalloy
2POS Terminal
Block
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Bill of Materials (BOM)
Table 7-1. UCC28C56EVM-066 Bill of Materials (continued)
Item
#
Designator
Quantity
Value
Description
PackageReference
PartNumber
Manufacturer
32
Q1, Q2
2
600V
MOSFET, N-CH, Depletion Mode,
600 V, 0.021 A, SOT-23, AEC-Q101
SOT-23
BSS126H6906XT Infineon
SA1
Technologies
33
Q3
1
60V
MOSFET, N-CH, 60 V, 0.19 A,
SOT-23
SOT-23
NX7002AK,215
Nexperia USA Inc
34
Q4
1
60V
Transistor, PNP, 60 V, 0.6 A, SOT-23, SOT-23
AEC-Q101
PMBT2907A,235
Nexperia USA Inc
35
Q5
1
1700V
MOSFET, N-Ch, SiC, 1700V, 5A,
AEC-Q101, TO-247
TO-247-3
SCT1000N170AG ST
Microelectronics
36
Q6
1
60V
Transistor, PNP, 60 V, 2 A, SOT-23,
AEC-Q101
SOT-23
PBSS5350THR
Nexperia USA Inc
37
Q7, Q8
2
40V
Transistor, NPN, 40 V, 0.2 A,
SOT-23, AEC-Q101
SOT-23
MMBT3904,215
Nexperia USA Inc
38
R1, R3
2
1.0Meg
RES, 1.0 M, 5%, 0.1 W, AEC-Q200
0603
CRCW06031M00
Vishay-Dale
Grade 0, 0603
39
R2, R28
2
61.9
RES, 61.9, 5%, 0.75 W, AEC-Q200
R4
1
100
RES, 100, 1%, 0.25 W, AEC-Q200
2010
R5
1
1.00k
RES, 1.00 k, 1%, 0.1 W, AEC-Q200
1206
R6, R9
2
10.0k
RES, 10.0 k, 1%, 0.1 W, AEC-Q200
0603
R8
1
100k
RES, 100 k, 1%, 0.125 W, AEC-
0603
R10
1
0
RES, 0, 5%, 0.25 W, AEC-Q200
0805
R11
1
10.0
RES, 10.0, 1%, 0.1 W, AEC-Q200
1206
R12
1
40.2k
RES, 40.2 k, 1%, 0.125 W, AEC-
R9
Vishay-Dale
CRCW06031K00
Vishay-Dale
CRCW060310K0
Vishay-Dale
CRCW0805100K
Vishay-Dale
CRCW12060000
Vishay-Dale
Z0EA
0603
Grade 0, 0603
46
RMCF2010FT61
Electronics
FKEA
Grade 0, 1206
45
CRCW1206100R
Stackpole
FKEA
Q200 Grade 0, 0805
44
Vishay-Dale
FKEA
Grade 0, 0603
43
G2R1000MT17D / GeneSIC /
C2M1000170D
Wolfspeed
FKEA
Grade 0, 0603
42
CRCW201061R9
FKEF
Grade 0, 1206
41
Alternate
Manufaturer
JNEA
Grade 0, 2010
40
Alternate
PartNumber
CRCW060310R0
Vishay-Dale
FKEA
0805
ERJ-6ENF4022V
Panasonic
0805
CRCW080520K0
Vishay-Dale
Q200 Grade 0, 0805
47
R13
1
20.0k
RES, 20.0 k, 1%, 0.125 W, AECQ200 Grade 0, 0805
48
R14
1
39.2
RES, 39.2, 1%, 0.25 W, AEC-Q200
FKEA
1206
Grade 0, 1206
49
R15
1
44.2k
RES, 44.2 k, 1%, 0.1 W, AEC-Q200
R16, R27
2
127
RES, 127, 1%, 0.125 W, AEC-Q200
0603
R17
1
2.55k
RES, 2.55 k, 1%, 0.125 W, AEC-
0805
R18
1
324k
RES, 324 k, 1%, 0.125 W, AEC-
0805
R19
1
20.0k
RES, 20.0 k, 1%, 0.125 W, AEC-
CRCW0805127R
Vishay-Dale
CRCW08052K55
Vishay-Dale
FKEA
0805
Q200 Grade 0, 0805
53
Vishay-Dale
FKEA
Q200 Grade 0, 0805
52
CRCW060344K2
FKEA
Grade 0, 0805
51
Vishay-Dale
FKEA
Grade 0, 0603
50
CRCW120639R2
CRCW0805324K
Vishay-Dale
FKEA
0805
ERJ-6ENF2002V
Panasonic
0805
CRCW08053K48
Vishay-Dale
Q200 Grade 0, 0805
54
R20
1
3.48k
RES, 3.48 k, 1%, 0.125 W, AECQ200 Grade 0, 0805
55
R21
1
1.00k
RES, 1.00 k, 1%, 0.125 W, AEC-
FKEA
0805
Q200 Grade 0, 0805
56
R22
1
4.02k
RES, 4.02 k, 1%, 0.125 W, AECQ200 Grade 0, 0805
CRCW08051K00
Vishay-Dale
FKEA
0805
CRCW08054K02
Vishay-Dale
FKEA
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Bill of Materials (BOM)
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Table 7-1. UCC28C56EVM-066 Bill of Materials (continued)
Item
#
57
Designator
R23
Quantity
1
Value
15.0k
Description
RES, 15.0 k, 1%, 0.125 W, AEC-
PackageReference
0805
Q200 Grade 0, 0805
PartNumber
CRCW080515K0
Manufacturer
Vishay-Dale
R24, R25
2
0.91
RES, 0.91, 1%, 0.75W, 2010
2010
RL73H2HR91FTE TE Connectivity
59
R26
1
2.00k
RES, 2.00 k, 1%, 0.125 W, AEC-
0805
CRCW08052K00
Q200 Grade 0, 0805
61
T1
THERM PAD
1
550 μH
1
1
62
THERM PAD
1
9200V
2
Alternate
Manufaturer
FKEA
58
60
Alternate
PartNumber
Vishay-Dale
FKEA
Transformer, PRI 40-1000V, SEC
XFRMR_SMD_38M ZD2200-BE
15V 2.7A, AUX 20V 35mA
M3_31MM9
Coilcraft
Thermal Pad for Q5, 21.84mm x
HF115AC-0.0055- Bergquist
18.79mm, W/ ADH
AC-90
Thermal Pad for D11 (no hole),
CD-02-05-247-N
Wakefield-Vette
5010
Keystone
5011
Keystone
Yellow Multipurpose 5014
Keystone
24.1mm x 19.0mm x 0.076mm, ,
0.107degC-in2/W
63
TP1
1
Test Point, Multipurpose, Red, TH
Red Multipurpose
Testpoint
64
TP2, TP3,
7
Test Point, Multipurpose, Black, TH
TP4, TP5,
Black Multipurpose
Testpoint
TP6, TP8,
TP10
65
TP7
1
Test Point, Multipurpose, Yellow, TH
Testpoint
66
TP9
1
PC Test Point, SMT
PC Test Point, SMT
5017
Keystone
67
TP11, TP12,
8
Test Point, Multipurpose, White, TH
White Multipurpose
5012
Keystone
TP13, TP14,
Testpoint
TP15, TP16,
TP17, TP18
68
U1
1
Automotive BiCMOS Low-Power
D0008A
Current Mode PWM Controller,
UCC28C56QDRQ Texas Instruments
1
SOIC-8, AEC-Q101
69
70
C6
C25
0
0
1000pF
0.33uF
CAP, CERM, 1000 pF, 630 V, +/- 5%, 1206
GRM31B5C2J102 MuRata
C0G/NP0, 1206
JW01L
CAP, CERM, 0.33 uF, 50 V, +/- 10%,
0603
X7R, AEC-Q200 Grade 1, 0603
71
C26
0
0.22uF
CAP, CERM, 0.22 uF, 25 V, +/- 10%,
FID1, FID2,
0
Fiducial mark. There is nothing to
FID3, FID4,
TDK
34K080AB
0603
X7R, 0603
72
CGA3E3X7R1H3
C1608X7R1E224
TDK
K080AC
Fiducial
N/A
N/A
Sullins 100mil, 1x2,
PBC02SAAN
Sullins Connector
buy or mount.
FID5, FID6
73
J5, J6, J7
0
Header, 100mil, 2x1, Gold, TH
230 mil above
Solutions
insulator
74
R7
0
100
RES, 100, 1%, 0.25 W, AEC-Q200
1206
Grade 0, 1206
75
R29
0
10.0
RES, 10.0, 1%, 0.1 W, AEC-Q200
R30
0
2.00k
RES, 2.00 k, 1%, 0.1 W, AEC-Q200
Vishay-Dale
FKEA
0603
Grade 0, 0603
76
CRCW1206100R
CRCW060310R0
Vishay-Dale
FKEA
0603
ERJ3EKF2001V
Panasonic
Grade 0, 0603
34
Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for
SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022
800-V Traction Inverters
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Revision History
Table 7-1. UCC28C56EVM-066 Bill of Materials (continued)
Item
#
77
Designator
R31
Quantity
0
Value
1.24k
Description
RES, 1.24 k, 1%, 0.1 W, AEC-Q200
PackageReference
0603
Grade 0, 0603
78
R32
0
12.4k
RES, 12.4 k, 1%, 0.1 W, 0603
PartNumber
CRCW06031K24
Manufacturer
Alternate
PartNumber
Alternate
Manufaturer
Vishay-Dale
FKEA
0603
RC0603FR-0712
Yageo
K4L
79
R33, R37
0
1.00k
RES, 1.00 k, 1%, 0.1 W, 0603
0603
RC0603FR-071K
Yageo
L
80
R34
0
6.81k
RES, 6.81 k, 1%, 0.1 W, 0603
0603
RC0603FR-076K
Yageo
81L
81
R35
0
2.43k
RES, 2.43 k, 1%, 0.1 W, 0603
0603
RC0603FR-072K
Yageo
43L
82
R36
0
0
RES, 0, 5%, 0.1 W, 0603
0603
RC0603JR-070R
Yageo
L
83
TP19, TP20
0
Test Point, Multipurpose, Yellow, TH
Yellow Multipurpose 5014
Keystone
Testpoint
84
U2
0
Optocoupler, 5 kV, 80-160% CTR,
DIP-4L Gullwing
FOD817ASD
SMT
85
U3
0
Automotive Catalog Adjustable
Precision Shunt Regulator, 34 ppm /
Fairchild
Semiconductor
DBZ0003A
TL431AQDBZRQ
Texas Instruments
1
degC, 100 mA, -40 to 125 degC, 3pin SOT-23 (DBZ), Green (RoHS &
no Sb/Br)
Notes:
Unless otherwise noted in the Alternate PartNumber and/or Alternate Manufacturer columns, all parts may be
substituted with equivalents.
8 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (October 2022) to Revision C (December 2022)
Page
• Added EVM Electrical Performance Specifications table................................................................................... 4
Changes from Revision A (July 2022) to Revision B (October 2022)
Page
• Updated Schematic diagram.............................................................................................................................. 5
• Updated PCB images....................................................................................................................................... 30
• Updated Bill of Materials...................................................................................................................................32
SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022
Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for
Submit Document Feedback
800-V Traction Inverters
Copyright © 2022 Texas Instruments Incorporated
35
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