VIPer12A AC-DC芯片手册

egral PWM controller includes the fixed frequency oscillator that sets the switching frequency and the duty cycle with a maximum duty cycle limit. The control loop consists of a sawtooth oscillator for error amplifier and a fast comparator. The MOSFET is well protected for enhanced reliability and is enabled to work up to 60 V. The VIPER12A operates in a wide range input voltage from 9 V to 38 V and has a fixed 60 kHz switching frequency. It also features current mode control, auxiliary undervoltage lockout with hysteresis, high voltage start-up current source, and overtemperature, overcurrent, and overvoltage protection with auto-restart. The typical power capability for European (195 - 265 Vac) is 8 W for SO-8 and 13 W for DIP-8, while for European (85 - 265 Vac) it is 5 W for SO-8 and 8 W for DIP-8. This document is the VIPer12A AC-DC converter datasheet, providing detailed information about the features, applications, diagrams, and electrical characteristics of the VIPER12A. It is intended for use by engineers and designers working on power supply projects and aiming to integrate the VIPER12A into their designs. The VIPER12A is a low power offline switched-mode power supply primary switcher, offering high efficiency and reliability. Its compact size and wide input voltage range make it suitable for various applications, such as battery charger adapters, standby power supplies for TV or monitors, and auxiliary supplies for motor control. The VIPER12A features a dedicated current mode PWM controller combined with a high voltage power MOSFET on the same chip, ensuring efficient power conversion and control. In conclusion, the VIPER12A is a versatile and efficient AC-DC converter suitable for a wide range of applications. Its comprehensive protection features, wide input voltage range, and compact size make it an ideal choice for power supply designs requiring high performance and reliability. This datasheet provides an in-depth look into the VIPER12A's features and specifications, serving as a valuable resource for engineers and designers seeking to incorporate this power switcher into their projects.