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

3 months ago

0 Timothy Hegarty 3 months ago

TI__Guru 57542 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 3 months ago in reply to Timothy Hegarty

TI__Guru 57542 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.

Power management

Power management forum

LM5149: Gree support need