TPS562200: Non-switching supply current

Hi,

Did you test the circuit with FB biased to 0.8V?  Pls check if there any other resistors connected between VIN and GND, normally the resistor divider on EN pin.

Yes, the test condition and schematic are as below:

Test condition: VIN=12V，VEN=5V，VFB=0.8V；

Hi,

Pls add 2.2uF 25V ceramic cap on C171,  and  measure input current with DMM by in series with input filter inductor.   

Hi Andy,

What is the DMM? 
The customer is using high accuracy power meter to measure the input current.

Besides, adding a 2.2uF cap will influence the operating supply current?

Hi Fabio,

Normally we use high accuracy Digital Multimeter to measure the small input current.

it require proper input bypassing capacitor for stable switching, this is not for Iq test as VFB=0.8V

Hi Andy,

There is PCN change for TPS562200DDCR in 2023.

Could you help to confirm whether this parameter has any change?

Hi Fabio,

This is a big difference, the data sheet should be updated with this change if the Iq varies from 330uA to 460uA. pls double check the Iq with DMM and 1mA measuring range.

Could you help to check the Iq parameter in the previous datasheet?

I can not find the previous datasheet.

There was a similar case last month. The old device parameter do not match the new red bull datasheet.