TPS2H160-Q1: Pd equation

kura

Genius 4840 points

Part Number: TPS2H160-Q1

(1)

Please let us know Total Pd equation of this part.

Is below equation correct ?

PD = VIN x I(op) + ILOAD1^2 x RON1 + ILOAD2^ x RON2

(2)

Please let us know what purpose of capacitor between MCU and CS pin.

over 7 years ago

0 Mahmoud Harmouch over 7 years ago

TI__Mastermind 28340 points

Hello,

The formula for total power dissipation is right.

The capacitor is just for decoupling noise and transient.

Regards

0 kura over 7 years ago in reply to Mahmoud Harmouch

Genius 4840 points

Mahmoud-san

Thank you for your reply.

Customer has additional questions.

1. Please let us know your recommend CS capacitor value.

2.Please let us know what purpose of series resister between MCU and CS pin.

3. CS output Max6.5V at fault conditon.Their MCU is 3.3V part.

So they consider to add attached circuit between MCU and CS.

Which circuit is you reccoemnd ?

(1)R1,R2,R3

(2)R2,R3

MCU_CS.xlsx

0 Mahmoud Harmouch over 7 years ago in reply to kura

TI__Mastermind 28340 points

Hello,

The RC between CS pin and MCU is low pass filter for noise and transient decoupling. I suggest few micro-seconds of RC time constant. Both configurations are OK but with R2, R3 the calculation is more simple.

Regards

Power management

Power management forum

TPS2H160-Q1: Pd equation