Other Parts Discussed in Thread: LM74930-Q1, LM74930,
Tool/software:
Hello,
I am using TPS7A1633QDGNRQ1 in the low current circuit, among other functions, to provide a ON/OFF functionality for Ideal diode surge stopper LM74930-Q1. I have few question about the LDO.
1. I am trying to simulate using TI's P-spice models simple circuit but tool cannot converge at all. Do you have idea how to fix it.
Here is the schematic:
Parameter setting:
2. I am using this LDO to switch LM74930 on/OFF plus some other functions in the system. The LM744930 works well - it switches on at predefined UV and UV conditions. However, during reverse polarity test both LDO and LM74930 failed for obvious reason - lack of protection at LDO input.
Q1 Would adding series Schottky diode in LDO input path fix the reverse polarity failure? Is there any issues with LM74930 implementation?
Q2. The positive Voltage applied at MODE or EN pin was after the LDO failure, was 9V which should not have damaged the LM74930, is that correct?
Q2 The Pspice model seems to be missing quotes, how to I fix it?
Zenon
