• RE: LM26420-Q1: LM26420-Q1, Request for review of channel 2 failure

  

  Moheddin Pasha Shaik

  Hi WOOHYUN, I did bench measurements using EVM but couldn't able to replicate the issue with large RC filter on the VINC pin. Please find below. LM26420-Q1_bench_measurements_19022026.pdf Thank you & regards, Moheddin.

  • 5 months ago
  • Power management
  • Power management forum
Answered

• RE: LM26420 / Phase margin and crossover frequency

  

  Florent Boico

  Resolved

  Hello Nagai-san, I took an EVM and checked its 2.5Voutput (LM26420XSQEVAL). I got the following plot: The cross-over frequency is 36kHz with a 65degree phase margin. After adding a 180pF feed forward capacitor, we obtain the following measurements…

  • over 9 years ago
  • Power management
  • Power management forum

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