Test Procedure and Results
11
SLVUBM3B – January 2019 – Revised December 2019
Copyright © 2019, Texas Instruments Incorporated
LM76202-Q1 Evaluation Module
Figure 8. LM76202-Q1EVM Negative Input Voltage Transient Test (12-V battery voltage, transient voltage
= –150 V , R
LOAD
= 12
Ω
)
6.7
Positive Input Voltage Transient Test (ISO 16750-2 Pulse 5b)
Use the following instructions to perform positive input voltage transient test
•
Select the ISO 16750-2 Pulse 5b in LD 200N simulator.
•
Set the parameters for pulse as:
–
U*
s
or V
p
= 21 V
–
R
i
= 0.5
Ω
–
t
r
= 5 ms
–
t
1
= 60 s
–
t
d
= 100 ms
•
Connect the output of LD 200N to input connector T1 of the EVM.
•
Connect a load of 14
Ω
on the output connector T2 of the EVM.
•
Enable the output of LD 200N and start the test.
•
Observe the waveforms of VIN, VOUT and IOUT using an oscilloscope
shows the protection of load during a positive input voltage transient of 36 V (with specifications
as per ISO 16750-2 pulse 5b) . The output is cut off from input during the transient and it returns to
nominal value after the transient.
