UCC1895J

The UCC1895J  is designed as one kind of BiCMOS advanced phase shift PWM controllers which implements control of a full-bridge power stage by phase shifting the switching of one half-bridge with respect to the other.UCC1895J allows constant frequency pulse-width modulation in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The part can be used either as a voltage mode or current mode controller.

UCC1895J has ten features. (1)Programmable output turn-on delay. (2)Adaptive delay set. (3)Bidirectional oscillator synchronization. (4)Capability for voltage mode or current mode control. (5)Programmable soft start/soft stop and chip disable via a single pin. (6)0% to 100% duty cycle control. (7)7MHz error amplifier. (8)Operation to 1MHz. (9)Low active current consumption (5mA typical at 500kHz). (10)Very low current consumption during undervoltage lock-out (150A typical). Those are all the main features.

Some absolute maximum ratings of UCC1895J have been concluded into several points as follow. (1)Its supply voltage Idd<10mA would be 17V. (2)Its supply current would be 30mA. (3)Its REF current would be 15mA. (4)Its out current would be 100mA. (5)Its analog inputs would be from -0.3V to REF+0.3V. (6)Its power dissipation would be 1W. (7)Its storage temerature range would be from -65°C to 150°C. (8)Its junction temperature range would be from -55°C to 125°C. (9)Its lead temperature soldering 10 seconds would be 300°C. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics of UCC1895J are concluded as follow. (1)Its UVLO start threshold would be min 10.2V and typ 11V and max 11.8V. (2)Its UVLO stop threshold would be min 8.2V and typ 9V and max 9.8V. (3)Its UVLO hysteresis would be min 1.0V and typ 2.0V and max 3.0V. (4)Its supply start-up current would be typ 150uA and max 250uA. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!