TPS50601A-SP: Confirmation

May

Genius 9880 points

Part Number: TPS50601A-SP

Hi,

Customer want to know if the IC contain a parallel diode to avoid the use of the body diode?

According to them, in either case the diode drop before the FET is conducting is needed.

They suggested to include this in the datasheet.

Thank you in advance.

Regards,
Maynard

over 2 years ago

0 Christian Yots over 2 years ago

TI__Genius 14540 points

Hi Maynard,

To my knowledge there is not internal parallel diode. Our EVMs typically employ an external Shottky diode in parallel with the low side FET but this is not required (we have tested with and without). This diode provides faster reverse charge recovery compared to the body diode of the LS FET. This mitigates the negative voltage spike on the phase node and improves efficiency of the converter slightly.

Thanks,

Christian

0 May over 2 years ago in reply to Christian Yots

TI__Genius 9880 points

HI Christian,

Thank you for your response.

Customer want to confirm also what external Shottky diode used in the EVM as you have mentioned above?

Regards,
Maynard

0 May over 2 years ago in reply to Christian Yots

TI__Genius 9880 points

Hi Christian,

Just want to follow up.

What type of external Shottky diode used in the EVM?

Regards,
Maynard

0 Christian Yots over 2 years ago in reply to May

TI__Genius 14540 points

Hi Maynard,

The EVM UG shows the schematic and BOM for this EVM. We have installed the following diode in this design

Designator Qty Value Description Package Reference Part Number Manufacturer

D3 1 30V Diode, Schottky, 30 V, 2 A, SMB SMB B230-13-F Diodes Inc.

Thanks

Christian

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TPS50601A-SP: Confirmation