Other Parts Discussed in Thread: TPS40200
Hello,
I have used successfully TPS40200-HT for input voltages higher than 15V.
I have problems with the TPS40200-HT for input voltages lower than 15V. I want to use a 6V input for a 3.3V AND 1.8V outputs. In the specs the minimum input voltage is 5.5V and the minimum output voltage is 700mA.
I am trying to use RRC = 68K and CRC = 470pF for a frequency of ~298KHz. I have tried L1 inductors with values of 10uH and 68uH.
Is it something in particular that has to be changed for low input voltages?
Thanks,
Marius Raducanu