TPS63050: TPS63050

Ian Wang

Part Number: TPS63050

Hi Sir,

QCC using ST MCU/STM32F070CBT6's PB9 GPIO pin46 to adjust VBUS o/p voltage of TPS63050RMWR.

1. How to control GPIO to reach below 2 Vo?

Hi V range between 4.64~5.25, Typical is 5.0V

Low V range between 3.8 ~4.18, Typical is 3.9V

2. Voltage Divide will need adjust?

3. Vout have 1.xV when PS63050RMWR EN pin 11 is Low, is it make sense?

Thanks, Ian.

0 Minqiu Xie over 4 years ago

Hi Ian:

For question 1, and 2, I'll forward an application note for you. www.ti.com/.../slva251.pdf

For question 3. It doesn't make sense. Please check if there is another power rail.

0 Ian Wang over 4 years ago in reply to Minqiu Xie

Hi Minqiu,

This Application note seems not match the QCC application, especially R3 circuit.

1. But where did VDACLOW and VDACHIcome from? And the value?

2. It seems that the only way to increase the accuracy of Vout is to select a 1% resistor.

Thanks, Ian.

0 Minqiu Xie over 4 years ago in reply to Ian Wang

Hi Ian:

If customer must use their own circuit, I'll recommend they do the simulation on TI-spice.

Yes, the Vout precise is related to the resistance and the Vdac signal. The Vdac is from the GPIO, or they can use the PWM after a low-pass filter.

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