Published:2011/4/1 3:21:00 Author:Rebekka | Keyword: switching DC , power supply | From:SeekIC
Composed of CS3843 and CS5101 output 5V/3.3V switching DC power supply circuit diagram is shown as below. CS3843 is a fixed frequency PWM controller. The IC is characterized by setting a tone oscillator that used to precisely control duty cycle. There are a reference voltage after temperature compensation, a high-gain error amplifier, current sense comparator and a high current push-pull output that suitable for driving the power tube MOSFET. CS5101 is a bipolar secondary side of the end of class regulator and regulation accuracy can up to 1.0%. Gate drive voltage is 8.0~75V, operating voltage(Ucc) is 8.0~45V, peak output current is 1.5A. There are one 2.0% accuracy, precision voltage reference and an internal compensation error amplifier.
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