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Texas Instruments UCC28911 | Demoboard PMP30026
Universal Input to 12V@1A PSR Isolated Flyback with Integrated 700V Switch Reference Design
Overview
| Topology | Flyback Converter |
| Input voltage | 90-265 V |
| Switching frequency | 105-125 kHz |
| Output 1 | 12 V / 1 A |
| IC revision | B |
Description
A quasi-resonant primary-side regulated isolated Flyback is used to provide 12V @ 1A from universal input voltage (90Vac to 264Vac). The converter does not employ any optocoupler and regulates the output voltage by sensing the auxiliary winding on primary side. A peak input voltage detector is used to sense input AC voltage, delivering 1/100 AC RMS equivalent voltage, with a +/-5% precision.
Features
Simple isolated PSR Flyback converter with integrated 700V FETCompact solution ("L" shaped PCB) supplies 12W with almost flat efficiency from 50mA to 1A load (75%...84%)Opto-less topology increases the reliability of the power supplyGood output voltage regulation versus load: +/-5% in the whole temperature range
Typical applications
- Home and Building Automation
- Smart plug, IoT, MCU and WiFi Power
- Aux power for TV, Server, White Goods
- Power Metering Bias
- Thermostat
- Bias Power for Smoke Alarm, Fire Alarm and
- Wall Adapters, Chargers for Mobile Phones
- LED Lighting
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | ISAT (A) | fres (MHz) | Version | IR (A) | L (µH) | RDC max. (Ω) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 7447462102 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TI Radial Leaded Wire Wound Inductor | 0.27 | 2.3 | Heat Shrinking Tube | 0.25 | 1000 | 6 | – | – | – | 6 | 6 | 8.5 | THT | ||
 | 744821120 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | – | – | THT | 0.5 | 20000 | 1 | 250 | 1500 | MnZn | 15 | 7.8 | 17.5 | THT |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 7447462102 | SPEC | |
| 744821120 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | ISAT (A) | fres (MHz) | Version | IR (A) | L (µH) | RDC max. (Ω) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples |
|---|