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TPS53219: To know why TPS53219 is latched during SCP

Part Number: TPS53219

Hi Expert,

The customer reported the TPS53219 is latched during SCP.It will have the hiccup then latched.Only discharge the VDD can restart the chip.

It is the MP project. The failure rate is 27 NG found from 2880 units customer board build.    

As our understanding, the TPS53219 should not have latched mode.

We captured the switching waveform,Vreg,VDD and enable waveform for your reference.

Pls provide your mail address for reading the scope and schematic

Pls advice why this fault happen.TKS.

Best regards,

Eric Lai

  

Field Application Engineer

Texas Instruments Taiwan Limited

O: +886-2-2175-2582

M: +886-909-262-582

E-Mail:Eric.Lai@ti.com