TPS53355: TPS53355 related issues

jeno.zhang

Part Number: TPS53355
Other Parts Discussed in Thread: TPS546E25, TPS546C25

Hi，

TPS53355 has an input voltage of 12V and an output voltage of 0.95V, with a load current of around 25A. How to adjust the transient response when the load current changes? This is to ensure that the output voltage changes as little as possible when the load current changes from 10A to 25A;

Thanks!

over 1 year ago

0 Calan Elaya over 1 year ago

TI__Genius 11155 points

Hello,

The best method to improve transient response is increased Cout. Attaining the right amount of output capacitance will determine the Vout overshoot and undershoot after a transient response. We also have new devices that have better transients than other devices.

I attached an Application Note below explaining how to improve transients.

https://www.ti.com/lit/an/slvaee0/slvaee0.pdf?ts=1716331711406&ref_url=https%253A%252F%252Fwww.google.com%252F

Hope this helps.

Best,

Calan

0 jeno.zhang over 1 year ago in reply to Calan Elaya

Expert 2855 points

Hello，

Can you help recommend the following models with better transient response, with parameters similar to TPS53355.

Thanks!

0 Calan Elaya over 1 year ago in reply to jeno.zhang

TI__Genius 11155 points

Hello,

One of our newest devices in development is TPS546E25 (50A version) and TPS546C25 (35A version). These devices will be releasing end of this year and features our newest control topology, D-CAP4, with similar parameters to TPS53355. The devices will feature improved transient response with minimal overshoot and undershoot, meeting most specs, and in addition, low ripple.

Hope this helps. Let me know if this device, TPS546E25, would be of interest.

Best,

Calan

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TPS53355: TPS53355 related issues