MP172AGS-Z

Primary-side regulator that provides accurate constant voltage (CV) regulation without an optocoupler. It supports buck, boost, buck-boost and flyback topologies. The device’s integrated 700V MOSFET simplifies the structure and reduces cost. This feature optimizes the device for offline, low-power applications such as home appliances and standby power. The MP172A is a green-mode operation regulator. Both the peak current and switching frequency lower as the load decreases. This feature provides excellent efficiency at light load, and improves the overall average efficiency. Protection features include thermal shutdown (TSD), VCC under-voltage lockout (UVLO), overload protection (OLP), short-circuit protection (SCP), and open-loop detection. Typical applications include home appliances, white goods and consumer electronics, industrial controls and standby power.

• Primary-side CV control
• Integrated 700V MOSFET and current source
• Under 30mW no-load power consumption, up to 3W output power
• Maximum DCM output current below 80mA
• Maximum CCM Output Current below 120mA
• Low VCC operating current, frequency foldback
• Limited maximum frequency, peak current compression
• Internally biased VCC