TPS62130EVM-505: Input capacitor C6

Yoshiki Ochi

Part Number: TPS62130EVM-505
Other Parts Discussed in Thread: TPS62130, TPS62130A

Hell. This is Ochi.

I have two questions. Could you tell me them as follows?

- What differences are TPS62130A and TPS62130>

- Datasheet of TPS62130EVM, There are two capacitor, which are 68uF(C6) and 10uF(C1). On the other hand, datasheet of TPS62130, there are 0/1uF and 10uF. Why do TPS62130EVM has big input capacitor?

Best regard,

Ochi.

over 4 years ago

0 Dorian Brillet de Cande over 4 years ago

TI__Genius 14856 points

Hello Ochi,

- The difference between TPS62130A and TPS62130 is TPS62130A has a different PG pin behavior which allow a discharge of the output up to 10mA. This is described in the Active Output Discharge (9.3.2) topic.

- The following blog explains the use of this big input capacitor. https://e2e.ti.com/blogs_/archives/b/fullycharged/archive/2015/05/20/what-is-that-giant-tantalum-cap-on-the-input-of-the-evm

I recommend you to have a look at the newer, smaller and newer TPS62147/8 which offer a bit lower Iq, some extra features, and tighter output accuracy.

Thank you very much!

Best regards,

Dorian

0 Dorian Brillet de Cande over 4 years ago in reply to Dorian Brillet de Cande

TI__Genius 14856 points

Hello,

I haven't heard back from you. Do you have any further questions on this topic?

Thank you very much!

Best Regards,

Dorian

0 Yoshiki Ochi over 4 years ago in reply to Dorian Brillet de Cande

TI__Expert 7585 points

Hello, Dorian.

Sorry for my late reply.

Your answer was very clear and helpful for me. Thank you very much.

Best regards,

Ochi

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TPS62130EVM-505: Input capacitor C6