CURRENT MODE PWM CONTROLLER FOR FORWARD AND FLYBACK APPLICATIONS

The UTC UC3853A is a high performance current mode PWMcontroller ideally suited for low standby power. Low V DD startupcurrent make the power reliable on startup design and a largevalue resistor could be used to minimize the standby power. At noload condition, the IC operates in power-saving mode fo Peak Current Mode Control Adjustable Switching Frequency Adjustable Soft−start Timer Adjustable Internal Ramp Compensation Jittering Frequency ±6% of the Switching Frequency Power-saving mode for high standby efficiency Auto−recovery Primary OCP with 10ms Fixed Delay Auto−recovery Brown−Out Dete;

UTC

友顺

High Power Factor Preregulator

文件：401.16 Kbytes 页数：10 Pages

TI

德州仪器

High Power Factor Preregulator

文件：401.16 Kbytes 页数：10 Pages

TI

德州仪器

High Power Factor Preregulator

FEATURES · Complete 8-pin Power Factor Solution · Reduced External Components · RMS Line Voltage Compensation · Precision Multiplier/Squarer/Divider · Internal 75kHz Synchronizable Oscillator · Average Current Mode PWM Control · Overvoltage Protection Comparator · High Current, Clamped

文件：302.23 Kbytes 页数：11 Pages

TI

德州仪器