TPS40210-Q1: About "no switching" of Test conditions

Noritomo Harukawa

Part Number: TPS40210-Q1

The following specifications are listed on the data sheet P5 of TPS40210-Q1.

What is the state of "no switching" described in Test conditions?

1) Period of High when PWM signal is driving.
2) Period of Low when PWM signal is driving.
3) State of High fixed PWM signal.
4) State of Low fixed PWM signal.

Which state does "no switching" refer to?

*Supplement
Customers want to reproduce "no switching".

-Harukawa

over 7 years ago

0 Garrett Roecker over 7 years ago

TI__Mastermind 21720 points

Hi Noritomo,

No switching indicates that external power MOSFETs are not being turned on and off. This specification indicates the current that is being pulled from all the internal circuitry (minus the gate driver which draw a large current). To reproduce this VDIS should be less than 0.8V. Also the FB pin voltage should be higher than the reference voltage to stop switching.

Thanks,

Garrett

0 Noritomo Harukawa over 7 years ago in reply to Garrett Roecker

Intellectual 990 points

Thank you for your reply.

I understood as follows.

"No Switching" is,
1) does not drive PWM logic
2) The GDRV is 0v and the gate of the external FET is not driven.

Is this correct?

0 Garrett Roecker over 7 years ago in reply to Noritomo Harukawa

TI__Mastermind 21720 points

Hello Noritomo,

That is correct.

Thanks,

Garrett

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TPS40210-Q1: About "no switching" of Test conditions