LM5149: Gree support need

Ryker She

Part Number: LM5149
Other Parts Discussed in Thread: LM5148, LM5145, LM5146

Tool/software:

Hi Team,

This is Gree FAE Ryker. Recently Gree wants to find a high-power BUCK as below request. Does the LM5149 suitable for these request? And do we have more suitable devices? Thanks.

Input voltage: 48V
Output voltage: 12V
Output voltage ripple: <1V
Average output power: 107W

Best Regards,

Ryker

over 1 year ago

0 Timothy Hegarty over 1 year ago

TI__Guru* 75612 points

Hi Ryker,

Yes, the LM5148 (no AEF) or LM5149 (with AEF) 80V current-mode controllers are options here. Also consider the LM5145 75V voltage-mode controller (higher gate drive level for faster switching).

Tim

+1 Timothy Hegarty over 1 year ago in reply to Timothy Hegarty

TI__Guru* 75612 points

See the LM5146 EVM https://www.ti.com/tool/LM5146-Q1-EVM12V, which is 12Vout, 8A, 400kHz and quite close to the customer's spec. The LM5146 is the same as the LM5145 but rated for 100V input instead of 75V.

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LM5149: Gree support need