Texas Instruments UCC28911DR | Demoboard PMP11774

Description

The UCC28910 and UCC28911 are high-voltage flyback switchers that provide output voltage and current regulation without the use of an optical coupler. Both devices incorporate a 700-V power FET and a controller that process operating information from the flyback auxiliary winding and power FET to provide a precise output voltage and current control. The integrated high-voltage current source for startup that is switched off during device operation, and the controller current consumption is dynamically adjusted with load. Both enable the very low stand-by power consumption.

Features

Constant-Voltage (CV) and Constant-Current (CC) Output Regulation Without Optical-Coupler±5% Output Voltage Regulation Accuracy±5% Output Current Regulation With AC Line and Primary Inductance Tolerance Compensation700-V Start-Up and Smart Power Management Enables <30-mW Standby Power115-kHz Maximum Switching Frequency Design for High-Power DensityValley Switching and Frequency Dithering to Ease EMI ComplianceThermal Shut DownLow Line and Output Over-Voltage Protection

Typical applications

• Home and Building Automation
• Aux power for TV, Server, White Goods
• Thermostat
• Bias Power for Smoke Alarm, Fire Alarm and
• Wall Adapters, Chargers for Mobile Phones
• Smart plug, IoT, MCU and WiFi Power
• Power Metering Bias
• LED Lighting

More information

• Datasheet
• IC product information