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reference designUCC28911DR | Demoboard PMP11774

Texas Instruments UCC28911DR | Demoboard PMP11774

700V Flyback Switcher with Constant-Voltage Constant-Current and Primary-side Regulation

Overview

TopologyFlyback Converter
Input voltage100-360 V
Switching frequency105-125 kHz
Output 15 V / 0.35 A
Output 218 V / 0.35 A
IC revision1

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

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L(µH)
IR(A)
ISAT,10%(A)
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744743102
SPECWE-TI Radial Leaded Wire Wound Inductor, 1000 µH, 0.42 A
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Downloads9 files

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 
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750315942
SPECTransformer, 1000 µH, –
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Downloads4 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product series Transformer
Inductance1000 µH
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