G
N
D
2
V
g
a
te
V
cc
2
D
E
S
A
T
V
BST
V
cl
p
O
U
T
L
O
U
T
H
C
LAM
P
V
E
E
2
A
I1
V
RE
F
A
I4
A
I2
A
I6
A
I5
G
N
D
2
V
reg
2
+
s
Power
Supply #1
(4.5V/0.2A)
+
s
DMM #1
DC Current
EVM Board
USB to
Computer
Oscilloscope
MCU Board
Probes connection example:
CH1 (IN+ to GND1);
CH2 (nFLT1 to GND1);
CH3 (Vgate to GND2);
CH4 (Desat to GND2).
Option 1
Option 2
+
Power
Supply #2
(12V/0.2A)
D
M
M
#
2
D
C
C
u
rr
en
t
+
s
Power Supply #2
(15V/0.2A and 0V/0.2A)
Option 1:
C12V supply and use the flyback
converter o15V/-8V for the driver VCC2, VEE2
bias;
Option 2:
C15V/0V (or +15V/-5V) supplies for
low voltage test. This gives flexibility for different
voltages and this is for low side driver only.
Test Summary
9
SLUUC64 – June 2020
Copyright © 2020, Texas Instruments Incorporated
UCC5870QDWJEVM-026 Evaluation Module User’s Guide
4.2.4
Bench Setup For Low Voltage Test
The current bench setup includes power supplies, oscilloscope and GUI USB connections.
Follow the connection procedure below.
can be used as a reference.
•
Make sure the outputs of DC voltage power supplies are OFF before connection.
•
Connect 4.5V power supply to TP3 for primary VCC1
•
There are two options for the DC power supply connection for secondary power: 1) Option 1: connect
+12V to TP1 as the input of the flyback power supply on the board; 2) Option 2: If only testing low side
driver, c15V directly to VCC2, and 0V or -5V to VEE2; this gives the flexibility and driver
voltage can be adjusted easily.
•
Connect oscilloscope probes to corresponded test pins.
•
Connect MCU daughter board to computer through USB cable.
Figure 4. Low Voltage Bench Setup Configuration
The test points labels are all on the upside of the J22 due to the space limitation for the bottom side, the
measured signal for each pin of J22 is illustrated as in
Figure 5. Test Points Labels for J22