TPS92520-Q1: issue about OC.

hongwei geng

Prodigy 60 points

Part Number: TPS92520-Q1

Tool/software:

Hello,TI support team

i encountered an issue about OC.

my setup is :TPS92520 provides 264mA current to PARK lamp with TPS92662,and the TPS92662 provides 8% duty.

when disconnect the PARK lamp,the OC waveform is strange ,not like the waveform gived in datasheet

6 months ago

0 Xiaoguang 6 months ago

TI__Genius 17590 points

This should be caused due to jittering during disconnection. You can just ignore it. Or you may have a switch between Vout and PARK lamp, like below to reduce jittering during disconnection. Example as below

0 hongwei geng 6 months ago in reply to Xiaoguang

Prodigy 60 points

Hello,Xiaoguang

we have used switch to disconnect the load when do the test,but i really confuse that why doesn't the voltage reach to VIN when disconnect the load,the VIN is 50V,the park votlage is about 5V

0 Xiaoguang 6 months ago in reply to hongwei geng

TI__Genius 17590 points

Sorry I got confused. Where you tested PARK voltage, isn't it CSNx voltage?

Can you share the schematic, and let me know how you do the test as well as test points for the waveforms?

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TPS92520-Q1: issue about OC.