TPS6594-Q1: TPS6594741FRWERQ1 shutdown after about 200ms

shang shengyu

Part Number: TPS6594-Q1

Hi Sir，

Up to now we used 3V3 to supply TPS6594741FRWERQ1. Acco. to Qualcomm 8620p power Sequence, controlled the NPWRON_ENABLE. Wanted to bring up TPS6594-Q1.

But TPS6594-Q1 output just maintained about 200ms and shut down the BucK and LDO. we did not know the reason about this issue.（Now

So would you please give us some suggestion about this issue?

Here is waveforms:

Power on

about 200ms PMIC shut down

4 个月前

0 Taylor 4 个月前

TI__Mastermind 35675 points

您好，

已经收到了您的案例，调查需要些时间，感谢您的耐心等待。

0 shang shengyu 4 个月前

Prodigy 10 points

请问这个事情有什么结果吗？

0 Links 4 个月前回复 shang shengyu

TI__Mastermind 31830 points

The TPS6594741F does a "handshake" with other devices on the platform.

After the PMIC sets nRSTOUT high, it will wait for up to 200ms for GPIO6 to be pulled high. If GPIO6 doesn't go high, it will cause a shutdown.

After receiving a high GPIO6, it will then wait for up to 200ms for GPIO11 to be pulled high. If GPIO11 doesn't go high, it will cause a shutdown.

If GPIO11 and GPIO6 are pulled high on time, the PMIC will set GPIO2 high to indicate sequence is done.

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Arabic	Hebrew	Polish
Bulgarian	Hindi	Portuguese
Catalan	Hmong Daw	Romanian
Chinese Simplified	Hungarian	Russian
Chinese Traditional	Indonesian	Slovak
Czech	Italian	Slovenian
Danish	Japanese	Spanish
Dutch	Klingon	Swedish
English	Korean	Thai
Estonian	Latvian	Turkish
Finnish	Lithuanian	Ukrainian
French	Malay	Urdu
German	Maltese	Vietnamese
Greek	Norwegian	Welsh
Haitian Creole	Persian

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TPS6594-Q1: TPS6594741FRWERQ1 shutdown after about 200ms