TY72011中文资料Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback数据手册ONSEMI规格书

描述 Description

The TY72011AP2 combines a true Current Mode Control modulator and a demagnetization detector to ensure full Discontinuous Conduction Mode in any load/line conditions and minimum drain voltage switching (Quasi-Resonant operation). Thanks to its inherent Variable Frequency Mode (VFM), the controller decreases its operating frequency at constant peak current whenever the output power demand diminishes.

特性 Features

• Natural Drain-Source Valley Switching for Lower EMI and Quasi-Resonant Operation
• Current Mode Control
• Smooth Frequency Foldback for Low Standby Power and Minimum Output Ripple at No-Load
• Internal 200 ns Leading Edge Blanking on Current Sense
• Wide UVLO Levels: 9.3 to 15 V Typical
• 250 mA Sink and Source Driver
• Wide Operating Voltages: 8.0 to 36 V with Fixed Over Voltage Protection (OVP) on the VCC or Adjustable through a Dedicated Pin
• Internal Short-Circuit Protection
• Integrated 3.0 mA Typ. Start-Up SourceApplications
• Off-Line Charger
• Standby SMPS
• Wall Adapters
• Power Supplies For: DVD Players Set-Top Boxes, etc.