Part Number:TPS65912
Hello,
During enter sleep mode of TPS659127, some devices work abnormally.
With Vin = 3.8V, most devices' current consumption is around 4mA at sleep mode.
But some devices' current consumption is around 12mA.
Customer find that DC-DC4(3.3V) is operating in PWM mode continuously at that time.
In normal sleep mode, switched to PFM mode.
With Vin >= 4V, switched to PFM mode and normal current cunsumption around 4mA.
Customer wants to know why some devices cannot switch to PFM mode automatically with Vin = 3.8V?
And why sleep mode works normally with Vin >= 4V?
Please check and let me get your answer ASAP.
Regards,
Nicky