TPSM365R6: Help review shcematic

Hi,

1) A small 100 nF high frequency bypass cap should be added between VIN and GND pin

2) A cap of 1 uF should be added between VCC and GND pin

3) RT should not be left floating. It should be connected to VCC or GND or a resistor to GND pin to set the switching frequency. I would suggest going with a frequency of 2.2MHz (short RT to GND pin) since the output voltage is high. You can refer datasheet section 7.3.7 for the options.

4) VOUT pin of device should be connected to system ground to get -15V at device GND pin

Regards,

Niranjan

Hi team,

pls help check the modified schematic. And another question is this device can support 15V output? 

3-V to 65-V input, 1-V to 13-V output,

The new schematic looks okay. Let me confirm on the 15V output and get back to you.

Hi team,

I mean, 24 to -15V is okay or not. Due to form another view, this condition is the same as 36V to 15V, right?

Hi,

Yes, it is similar to 39V to 15V, however the recommended output range for the device is 1-13V. Since the inductor is fixed, going outside the recommended range might cause issues with slope compensation, current limit etc.

What is your load current requirement?

Regards,

Niranjan

Hi team,

The -15V is for OP use. so I guess maybe  under 10mA .  Converter to -15V is okay?