LM5140-Q1: change from diode emulation mode to FPWM mode or opposite

tateo yamashiro

Part Number: LM5140-Q1

Hi,

We got a question from customer about LM5140-Q1.
Could you help us?

[Question]
Our cutomer is considering changing from diode emulation mode to FPWM mode or opposite while the IC operate to be synchronized external clock. Are there any concerns for this usage?

Best Regards,
tateo

over 7 years ago

0 Ambreesh Tripathi over 7 years ago

TI__Expert 6860 points

Yamashiro-san ,
LM5140 team will get back to you soon .

---Ambreesh

0 David Baba over 7 years ago

TI__Mastermind 40040 points

Hello Tateo san,

No concerns regarding LM5140 with clock Sync in FPWM mode.

kind regards,

David.

0 tateo yamashiro over 7 years ago in reply to David Baba

Guru 10890 points

Hi, Thank you for your reply. They are considering changing the operation mode (FPWM -> Diode emulation or Diode emulation -> FPWM) by DEMB pin while the IC is switching in synchronization to an external clock. Are there any concerns for this usage?

Best Regards,
tateo

0 Terry Allinder over 7 years ago in reply to tateo yamashiro

TI__Expert 3545 points

Tateo,
Yes it is ok to change from FPWM to DEMB to FPWM whle the controller is enabled, and synchronized to an external clock.
Terry

Power management

Power management forum

LM5140-Q1: change from diode emulation mode to FPWM mode or opposite