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EVM Setup and Operation
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.
PIN
I/O/TP
J1
-
J2
I
J3
-
J4
O
VDD
TP
VREF
TP
COMP
TP
VFB
TP
RT/CT
TP
VIN
TP
V_AUXL
TP
V_AUX
TP
VG
TP
SWN
TP
VO
TP
GND x5
TP
ISO_GND x2
TP
8
Using the UCC28C56EVM-066 High-Density 40-W Auxiliary Power Supply for
800-V Traction Inverters
Table 4-1. Input, Output, Test Point (I/O/TP) Description
DESCRIPTION
COLOR
Green
GND
Green
VIN+
Green
ISO_GND
Green
VOUT+ (depends on load)
White
Analog controller bias supply
White
Controller reference output
White
Error amplifier output
White
Inverting input to the error amplifier
White
Fixed frequency triangle oscillator
Red
Input voltage
White
AUX voltage after a 10 ohm series resistor
White
AUX output voltage
White
Voltage at the gate of the SiC MOSFET
Silver
Switching node (bottom of the PCB)
Yellow
Output voltage
Black
GND
Black
Isolated GND
Copyright © 2022 Texas Instruments Incorporated
MIN
TYP
-
0 V
40 V
800 V
-
0 V
14.5 V
15.5 V
-
18.6 V
4.9 V
5 V
0 V
-
2.45 V
2.5 V
0.9 V
1.4 V
TYP
PP
40 V
-
-
18.7 V
-
18.7 V
0 V
18 V
0 V
-
14.5 V
15.5 V
-
0 V
-
0 V
SLUUCN1C – JUNE 2022 – REVISED DECEMBER 2022
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MAX
-
1000 V
-
20 V
-
5.1 V
5 V
2.55 V
2.3 V
PP
1000 V
-
-
-
V
+ 480 V
IN
20 V
-
-
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