• ME8139B_V01_en.pdf

  （Documentation）

  ALL

• Integrated 650V GaN
• Ultra Low start-up and quiescent current
• Wide VDD range from 9.5V to 82V
• Constant power mode
• Built-in soft start to reduce VDS stress
• Frequency Jittering and Peak Current Jittering
• Extended Burst Mode Control
• Auto-tuning soft Drive
• Internal Synchronized Slope Compensation
• Protection coverage with auto recovery : OCP, OLP, UVLO, VDD OVP, OTP, LEB, SCB

The ME8139B is a highly integrated current mode PWM controller with a high voltage GaN of 650V optimized for high performance off-line power converters. ME8139B features a constant power mode. VDD low startup current and low operating current contribute to a tiny power consumption and reliable power on startup. ME8139B features a auto-tuning circuit combined with a steering charge pump, reducing the stress of secondary synchronous rectifier effectively. ME8139B offers a wide VDD supply range from 9.5V to 82V. The IC operates in a maximum frequency of 130KHz @Full Load, As the load gradually decreases， the IC operates in Green Mode and Extended Burst Mode to minimize the standby power loss. EMI performance is also optimized by Frequency Jittering and Peak Current Jittering. ME8139B offers comprehensive protection coverage including Cycle-by-Cycle current limiting (OCP), Over Load Protection (OLP), VDD Under Voltage Lockout (UVLO), Over Temperature Protection (OTP), VDD Over Voltage Protection (VDD OVP), Leading Edge Blanking (LEB) and CS Open Protection (SCB).