Other Parts Discussed in Thread: LM5010
Hi Team
customer made board with the below parameters;
- Fsw = 424Khz(Ron = 100Kohm),
- external ESR = 4.7ohm, Cout = 4.7uF
- Vout = 5V(Fbb = 5.1Kohm, Fbt = 5.1Kohm)
- Cff = 1nF,
- Soft Start = 470nF,
- Boot Cap = 22nF,
at the below test condition, he said he observed Switching frequency = 22KHz.
the designed Fsw is 424KHz, so I think the actual Fsw would be within +- 30% error based on 424KHz.
before I start to debug customer board, can I get your reply that Fsw 22KHz is reasonale ?
just I am asking Fsw = 22KHz observed is noraml from IC design view point at such customer test condition ?
[test condition]
- Vin = 54.6V
- Iout = 0.3A
- at CCM mode
