Customer was seeking for a simple controller to include below functions:
1) To generate 2 PWM, with symmetric duty cycle, with 42% duty cycle
2) switching frequency =100kHz
3) with Enable pin and frequency sync feature
4) provide cycle by cycle current protection
5) open loop control
Could you please help check any parts to suggest? Thank you.
Hello Aki,
Unfortunately, I do not think we have a device that meets all of your requirements. The closest I could find is the UC28025. This device can generate 2 output PWMs with max 45% duty cycle. The UC28025 also has a sync feature and open loop control. You can design a 100kHz signal based on Figure 1 from page 7 of the datasheet.
The LM5036 or LM5045 also are dual output PWM controllers designed for full-bridge applications. They do not have an enable pin but you can use the UVLO feature instead. They will not be able to switch at 100 kHz as that switching frequency is too low. The oscillator frequency curves for both devices are found below (page 11 on LM5036 datasheet and page 10 on LM5045 datasheet).
You can further look through our PWM controller portfolio for other options here: https://www.ti.com/power-management/acdc-isolated-dcdc-switching-regulators/pwm-controllers/overview.html
Regards,
Jonathan Wong
