• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 40 subscribers
  • Views 109 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

PMP23340UCD: DAC Ramp Model——softstart

Martin
Prodigy 170 points
Other Parts Discussed in Thread: PMP23340UCD, UCD3138A

Hi，

Thank u for ur time.

I have some doubts about PMP23340UCD.

Hardware：PMP23340UCD(UCD3138A) （48v-12v）
Firmware：TI supplied routines——UCDIBCFirmware

  1. How to Calculate DAC Value to Reference Voltage？As shown, the DAC value is 16300, so the reference voltage should be 1.59v (16300/16*1.5625mv), right?
  2. What is the relationship between VOUT, EAP0, and DAC? EAP0 = VOUT/11，the system puts EAP0 close to the DAC, right?
  3. A closed-loop system adjusts the output frequency so that EAP0 is close to the DAC, but the output frequency is clamped at 1000KHZ, when VOUT is 12v, so the loop is called open loop.Am I understanding you correctly?

Regards，

Martin.