Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.

  • State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 64 subscribers
  • Views 85 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.

TPS61500: output current issue

Colt Zhang
Expert 3650 points
Part Number: TPS61500

For the output current of the TPS61500:
1, design circuit, design current of 333mA,


2, specification book output current

3, the actual test:
Screen LED current requirements 360mA max., quad, 6 LEDs each, The current per circuit is 90mA

4, actual test voltage of the circuit:
Unloaded output voltage: 20.5V
Load output voltage: 17.7V (PWM open to maximum) PWM frequency is 730Hz
The voltage at the R43 and R44(R3) positions is 180mV and the current is approximately 270mA