Part Number: OPA549
Hi,
I am using OPA549 to do a line transient test from 19V to 23V. The slew rate i want is >=1V/us. When i connected the output of OPA549 to input of my EVM it took about 15us to go from 19V to 23V. What causing the slew rate to slow down and how can i increase it to what i want? When i disconnect my EVM, it takes only 1us to go from 19V to 23V. The VIN of EVM has only 2.2uF cap. The EVM i am using is BQ24780S EVM. I am driving OPA549 witha function generator.
Sathish