AP3770BPK6TR-G1-2

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PMIC - AC DC Converters, Offline Switchers

The AP3770BPK6TR-G1-2 is a current-mode PWM controller with a wide range of applications. It features a high-speed, configurable oscillator operating up to 500 KHz and a fixed frequency switching architecture. With a low ripple noise at both the input and output stage and excellent line/load regulation, the AP3770BPK6TR-G1-2 is ideal for AC/DC converter, Off-line switcher applications.

Working Principle

The AP3770BPK6TR-G1-2 PWM controller operates using a fixed frequency current-mode architecture. It achieves better output voltage regulation and lower output noise than similar fixed frequency PWM controllers. The AP3770BPK6TR-G1-2 uses an internal sense amplifier to measure the peak current of the primary inductor and regulates the output voltage by controlling the peak current. This results in excellent input voltage and output current ripple. The AP3770BPK6TR-G1-2 also features an optimized lead compensation circuitry, helping to reduce output voltage overshoot and ringing under transient conditions.

Application Field

The AP3770BPK6TR-G1-2 is an ideal choice for many off-line and AC/DC applications, such as: Battery Powered Loads : including LED Lighting, Portable Electronics and other battery powered applications; Telecommunications Power Supplies : including audio/video equipment, telephones and other communication equipment; Home Appliances : including refrigerators, microwave ovens, coffee machines and other home appliances; Industrial applications : including medical instruments, printers, and other industrial equipment.

In addition to the above, the AP3770BPK6TR-G1-2 can be used for auxiliary power supplies, bank power supplies, and power supplies for multifunction printer/scanner/fax machines. It also supports monitors, DVRs, DVD players, and vending machines.

Features

The AP3770BPK6TR-G1-2 offers a wide range of features that make it an excellent choice for many applications.

• Current Mode Operation
• Adjustable Oscillator Frequency up to 500 KHz
• Low VDD Start up with Fast Transient Response
• Integrated Sense Amplifier
• Programmable Over-Voltage Protection (OVP)
• Programmable Over-Current Protection (OCP)
• Programmable Over-Temperature Protection (OTP)
• Comprehensive Self-Protection Functions
• Pb-free, RoHS Compliant

Conclusion

The AP3770BPK6TR-G1-2 is an ideal PWM controller for AC/DC converters and Off-line switcher applications. It is capable of delivering excellent voltage regulation, low noise and fast transient response. With its adjustable oscillator frequency, integrated sense amplifier, comprehensive self-protection functions and low VDD start up, the AP3770BPK6TR-G1-2 is an ideal solution for any application that requires reliable, efficient power.

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