LM5164: Review LM5164D schematics

Kevin Huang8

Genius 4515 points

Part Number: LM5164

Tool/software:

Hi Team,

Please help review LM5164 schematics

Input voltage 47V (6V~71.4V)
UVLO: 20V
VOUT 5V
LDO 5V to 3.3V

0 ARPITA NATH 4 months ago

Hi Kevin,

What is the load current value? I will check the schematic of LM5164 part and get back to you by tomorrow IST.

Meanwhile for the LDO part, please open another thread mentioning the LDO part number.

Regards

Arpita

0 ARPITA NATH 4 months ago in reply to ARPITA NATH

Hui Kevin,

here are few comments on the LM5164 part of the schematic

For a typical vin (47V) and given circuit parameters, it is required to use RA=150k ~220kohm range for sufficient ripple at FB node
Please directly connect the EP and GND pin of IC and system ground by removing (short) the capacitor.
Note that for lower vin voltages than typical, type-3 ripple injection needs to be calculated again for sufficient ripple. You can use the excel tool for this. LM5163-LM5164DESIGN-CALC Calculation tool | TI.com

Regards

Arpita

0 ARPITA NATH 4 months ago in reply to ARPITA NATH

Hi Kevin,

Closing the thread due to inactivity.

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