Product details

Topology Boost, Buck, Flyback, PFC Controller, Sepic Control mode Current Practical operating frequency (Max) (MHz) 0.2 UVLO thresholds on/off (V) 15.8 / 9.7 Device type Controllers Operating supply current (mA) 4 Features Soft Start Rating Catalog Operating temperature range (C) -40 to 105
Topology Boost, Buck, Flyback, PFC Controller, Sepic Control mode Current Practical operating frequency (Max) (MHz) 0.2 UVLO thresholds on/off (V) 15.8 / 9.7 Device type Controllers Operating supply current (mA) 4 Features Soft Start Rating Catalog Operating temperature range (C) -40 to 105
SOIC (D) 8 19 mm² 3.91 x 4.9
  • Transition Mode Controller for Low Implementation Cost of AC Input LED Lighting Applications
  • Implements Single Stage Power Factor Corrected LED Driver
  • Enhanced Transient Response With Slew-Rate Comparator
  • Interfaces with Traditional Wall Dimmers
  • Accurate Internal VREF for Tight Output Regulation
  • Two UVLO Options
  • Overvoltage Protection (OVP), Open-Feedback Protection and Enable Circuits
  • ±750-mA Peak Gate Drive Current
  • Low Start-Up and Operating Currents
  • Lead (Pb)-Free Packages
  • APPLICATIONS
    • AC Input General Lighting Applications Using HB LEDs
    • Industrial, Commercial and Residential Lighting Fixtures
    • Outdoor Lighting: Street, Roadway, Parking, Construction and Ornamental LED Lighting Fixtures

All trademarks are the property of their respective owners.

  • Transition Mode Controller for Low Implementation Cost of AC Input LED Lighting Applications
  • Implements Single Stage Power Factor Corrected LED Driver
  • Enhanced Transient Response With Slew-Rate Comparator
  • Interfaces with Traditional Wall Dimmers
  • Accurate Internal VREF for Tight Output Regulation
  • Two UVLO Options
  • Overvoltage Protection (OVP), Open-Feedback Protection and Enable Circuits
  • ±750-mA Peak Gate Drive Current
  • Low Start-Up and Operating Currents
  • Lead (Pb)-Free Packages
  • APPLICATIONS
    • AC Input General Lighting Applications Using HB LEDs
    • Industrial, Commercial and Residential Lighting Fixtures
    • Outdoor Lighting: Street, Roadway, Parking, Construction and Ornamental LED Lighting Fixtures

All trademarks are the property of their respective owners.

The UCC28810 and UCC28811 are general lighting power controllers for low to medium power lumens applications requiring power factor correction and EMC compliance. It is designed for controlling a flyback, buck or boost converter operating in critical conduction mode. It features a transconductance voltage amplifier for feedback error processing, a simple current reference generator for generating a current command proportional to the input voltage, a current-sense (PWM) comparator, PWM logic and a totem-pole driver for driving an external FET.

In the critical conduction mode operation, the PWM circuit is self-oscillating with the turn-on being governed by a transformer zero energy detector (TZE pin) and the turn-off being governed by the current sense comparator. Additionally, the controller provides features such as peak current limit, restart timer, overvoltage protection (OVP), and enable.

The efficient system performance is attained by incorporation of zero power detect function which allows the controller output to shut down at light load conditions without running into overvoltage. The device also features an innovative slew rate enhancement circuit which improves the large signal transient performance of the voltage error amplifier. The low start-up and operating currents of the device result in low power consumption and ease of start-up. The highly-accurate internal bandgap reference leads to tight regulation of the output voltage in normal and OVP conditions, resulting in higher system reliability. The enable comparator ensures that the controller is off if the feedback sense path is broken or if the input voltage is very low.

There are two key parametric differences between UCC28810 and UCC28811, the UVLO turn-on threshold and the gM amplifier source current. The UVLO turn-on threshold of the UCC28810 is 15.8 V and for the UCC28811 it is 12.5 V. The gM amplifier source current for UCC28810 is typically 1.3 mA, and for the UCC28811 it is 300µA. The higher UVLO turn-on threshold of the UCC28810 allows quicker and easier start-up with a smaller VDD capacitance while the lower UVLO turn-on threshold of UCC28811 allows operation of the critical conduction mode controller to be easily controlled by the downstream PWM controller in two-stage power converters. The UCC28810 gM amplifier also provides a full 1.3-mA typical source current for faster start-up and improved transient response when the output is low either at start-up or during transient conditions. The UCC28811 is suitable for applications such as street lights and larger area luminaires where a two-stage power conversion is needed. The UCC28810 is suitable for applications such as commercial or residential retrofit luminaires where there is no down-stream PWM conversion and the advantages of smaller VDD capacitor and improved transient response can be realized.

Devices are available in the industrial temperature range of –40°C to 105°C. Package offering is an 8-pin SOIC (D) package.

The UCC28810 and UCC28811 are general lighting power controllers for low to medium power lumens applications requiring power factor correction and EMC compliance. It is designed for controlling a flyback, buck or boost converter operating in critical conduction mode. It features a transconductance voltage amplifier for feedback error processing, a simple current reference generator for generating a current command proportional to the input voltage, a current-sense (PWM) comparator, PWM logic and a totem-pole driver for driving an external FET.

In the critical conduction mode operation, the PWM circuit is self-oscillating with the turn-on being governed by a transformer zero energy detector (TZE pin) and the turn-off being governed by the current sense comparator. Additionally, the controller provides features such as peak current limit, restart timer, overvoltage protection (OVP), and enable.

The efficient system performance is attained by incorporation of zero power detect function which allows the controller output to shut down at light load conditions without running into overvoltage. The device also features an innovative slew rate enhancement circuit which improves the large signal transient performance of the voltage error amplifier. The low start-up and operating currents of the device result in low power consumption and ease of start-up. The highly-accurate internal bandgap reference leads to tight regulation of the output voltage in normal and OVP conditions, resulting in higher system reliability. The enable comparator ensures that the controller is off if the feedback sense path is broken or if the input voltage is very low.

There are two key parametric differences between UCC28810 and UCC28811, the UVLO turn-on threshold and the gM amplifier source current. The UVLO turn-on threshold of the UCC28810 is 15.8 V and for the UCC28811 it is 12.5 V. The gM amplifier source current for UCC28810 is typically 1.3 mA, and for the UCC28811 it is 300µA. The higher UVLO turn-on threshold of the UCC28810 allows quicker and easier start-up with a smaller VDD capacitance while the lower UVLO turn-on threshold of UCC28811 allows operation of the critical conduction mode controller to be easily controlled by the downstream PWM controller in two-stage power converters. The UCC28810 gM amplifier also provides a full 1.3-mA typical source current for faster start-up and improved transient response when the output is low either at start-up or during transient conditions. The UCC28811 is suitable for applications such as street lights and larger area luminaires where a two-stage power conversion is needed. The UCC28810 is suitable for applications such as commercial or residential retrofit luminaires where there is no down-stream PWM conversion and the advantages of smaller VDD capacitor and improved transient response can be realized.

Devices are available in the industrial temperature range of –40°C to 105°C. Package offering is an 8-pin SOIC (D) package.

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Design & development

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Evaluation board

UCC28810EVM-003 — 110-W Multiple String LED Driver with Universal Line Input and PFC Evaluation Module

The UCC28810EVM-003 is an 110-W offline AC-to-DC LED current driver with power factor correction. This design utilizes a three stage approach with a universal input boost PFC stage, a low-side buck stage providing a controlled current source and a half-bridge DC transformer stage to provide (...)

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UCC28810EVM-002 Design Calculator (Rev. A)

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Calculation tool

UCC28810EVM-003 Design Calculator

SLUC205.ZIP (212 KB)
Schematic

PMP3976 Schematic

SLVR372.PDF (58 KB)
リファレンス・デザイン

PMP4484 — AC Input, 6 Channel LED Strings with 30W Output Reference Design

The PMP4484 is a power reference design with AC input. It is a isolated LED driver, provides 6 channel LED outputs with PWM dimming.  It implements a high PF flyback controller UCC28810 to output DC 40V, the Constant Current Buck LED Driver LM3414HV downs the voltage to 30V to drive  LED. (...)
リファレンス・デザイン

PMP10155 — Single Stage Power Factor Corrected Isolated Flyback, Converts Offline Voltages to 10.5Vdc @2A

When input power factor is necessary (like LED lighting, avionics or low THD application as well as the isolation), the single stage PFC Flyback is the best topology. The only drawback of such topology is the 100Hz/120Hz voltage ripple on output.
リファレンス・デザイン

TIDM-AC-LED-COM — AC-mains LED Lighting with DALI DMX512 & Power Line Communications Reference Design

Ideal for outdoor, entertainment, and industrial lighting applications, this LED Lighting design provides high power and high efficiency illumination with built-in communications networking. The lighting unit consists of a 250W universal AC-input LED driver power supply and a demonstrational (...)
リファレンス・デザイン

PMP4350 — Universal AC Input 150W Single String 200V/700mA Output LLC Converter without CT

The reference design is a high effiency (>94%) isolated AC/DC single string output LED lighting solution for high watt (>100W) general LED lighting. The topology uses Transition Mode (TM) PFC plus LLC control, which can support PWM dimming and analog dimming on the output side. The target (...)
リファレンス・デザイン

PMP4317 — Universal AC input(90V-264V) high efficiency 150W single string 200V/700mA output LLC converter

The reference design is a very high effiency (>94%) isolated AC/DC single string output LED lighting solution for high watt (>100W) general LED lighting. The topology uses Transition Mode (TM) PFC plus LLC control, which can support PWM dimming and analog dimming on the output side. The target (...)
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