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Texas Instruments UCC28911DR | Demoboard PMP11774
700V Flyback Switcher with Constant-Voltage Constant-Current and Primary-side Regulation
Overview
| Topology | Flyback Converter |
| Input voltage | 100-360 V |
| Switching frequency | 105-125 kHz |
| Output 1 | 5 V / 0.35 A |
| Output 2 | 18 V / 0.35 A |
| IC revision | 1 |
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
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT,10%(A) | RDC max.(Ω) | fres(MHz) | Version | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-TI Radial Leaded Wire Wound Inductor, 1000 µH, 0.42 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TI Radial Leaded Wire Wound Inductor | Inductance1000 µH | Rated Current0.42 A | Saturation Current @ 10%0.69 A | DC Resistance2.5 Ω | Self Resonant Frequency1.6 MHz | VersionStandard | ||||
 | 750315942 | Transformer, 1000 µH, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Transformer | Inductance1000 µH | – | – | – | – | – |