TPS61022: TPS61022 Quiescent current

Sam Shyu36

Part Number: TPS61022

Dear Sir,

Could you help provide about how to measure Vin Quiescent current? How to make below test conditions (VFB)? Use external DC source offer 0.7V to VFB?

Best Regards,

Sam

over 5 years ago

0 Jasper Li over 5 years ago

TI__Mastermind 46905 points

Hi Sam,
correct. external power supply to power FB pin. refer to this link www.ti.com/.../slyt412.pdf to understand IQ

0 Sam Shyu36 over 5 years ago in reply to Jasper Li

Intellectual 735 points

Dear Jasper,

I measured the EVM measurement to be 26.1uA. The measurement environment, waveform and conditions are as follows. Please help to check which step is wrong. Thanks!

0 Jasper Li over 5 years ago in reply to Sam Shyu36

TI__Mastermind 46905 points

Hi Sam,
The 26.1uA is from the input? what is current from the output? and the output voltage should be higher than 2.2V

0 Sam Shyu36 over 5 years ago in reply to Jasper Li

Intellectual 735 points

Hi Jasper,

The 26.1uA is from the input? -->Ans: Yes.
what is current from the output? -->Ans: No load.
and the output voltage should be higher than 2.2V--> Ans: Take off R3,R2 and R1 the output voltage 1.92V (as wavefrom channel 1).

Best Regards,
Sam Shyu

0 Jasper Li over 5 years ago in reply to Sam Shyu36

TI__Mastermind 46905 points

HI Sam,
please apply a voltage higher than 2.2V to the VOUT pin. then measure the current into VIN and VOUT pin respectively.

0 Jasper Li over 5 years ago in reply to Jasper Li

TI__Mastermind 46905 points

Hi Sam,
I assume you had solve the problem. so the close the post. if not, just reply below

0 Sam Shyu36 over 5 years ago in reply to Jasper Li

Intellectual 735 points

Hi Jasper,

Thanks for your help~

Sam Shyu

Power management

Power management forum

TPS61022: TPS61022 Quiescent current