UCC3810-DIE - Dual Channel Synchronized Current Mode PWM Die

The UCC3810-DIE is a high-speed BiCMOS controller integrating two synchronized pulse width modulators for use in off-line and dc-to-dc power supplies. The UCC3810-DIE provides perfect synchronization between two PWMs by using the same oscillator. The oscillator’s sawtooth waveform can be used for slope compensation if required.

Using a toggle flip-flop to alternate between modulators, the UCC3810-DIE ensures that one PWM does not slave, interfere, or otherwise affect the other PWM. This toggle flip- flop also ensures that each PWM is limited to 50% maximum duty cycle, insuring adequate off-time to reset magnetic elements.

• Single Oscillator Synchronizes Two PWMs
• Startup Supply Current
• Operating Supply Current
• Internal Soft-Start
• Full-Cycle Fault Restart
• Internal Leading-Edge Blanking of the Current Sense Signal
• 75-ns Typical Response from Current Sense to Output
• 1.5% Tolerance Voltage Reference