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Enable/Diable control for DCDC2 converter of TPS65070

Pankaj katiyar
Prodigy 110 points
Other Parts Discussed in Thread: TPS65070

Hi,

I have encountered an peculiar problem while working on TPS65070. One of our use case with this is device is switch OFF DCDC1,DCDC2,DCDC3 and LDO2. so the only device which is operation is LDO1.

This enable/disabale is done using I2C access to control register.

Now the problem is the moment DCDC2 converter is disabled in CON-Control register the whole TPS switches OFF included Vsys voltage.

This should not happen since as per the register details provided in TPS65070 datasheet, if EN_DCDC2 pin is at logic 1 the CON_CTRL1<3> should enable/disable DCDC2 output.