UCC3810-DIE Texas instruments

UCC3810-DIE

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UCC3810-DIE

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Описание

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

Topology	Boost, Flyback
Control mode	Current
Duty cycle (max) (%)	50
Switching frequency (max) (kHz)	1000
UVLO thresholds on/off (V)	11.3/8.3
Operating temperature range (°C)	25 to 25
Rating	Catalog
Gate drive (typ) (A)	1
Vin (max) (V)	11