BUY UC2844ADTRG4 https://www.utsource.net/itm/p/1883714.html
Current Mode PWM Controller
Description: The UC2844A is a high performance fixed frequency current mode controller. Features: High performance fixed frequency current mode control Operates at up to 500kHz Undervoltage lockout with hysteresis Precision reference with temperature compensation Low start-up current Programmable soft-start Programmable oscillator frequency Programmable deadtime Programmable peak current limit Programmable overcurrent protection Programmable output voltage Applications: Switching power supplies Uninterruptible power supplies Battery chargers Motor control (For reference only)