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UCC28710

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Constant-voltage, constant-current PWM with PSR, valley switching & Programmable cable compensation

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Constant-voltage, constant-current PWM with PSR, valley switching & Programmable cable compensation

UCC28710

ACTIVE
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Product details

Parameters

Control method Primary-side regulation Duty cycle (Max) (%) 99 Frequency (Max) (kHz) 100 UVLO thresholds on/off (V) 21/8 Features PSR, DCM, HV Start-up, Green Mode, Input Line Monitor, Leading Edge Blanking, Light Load Efficiency, Low Power, Soft Start Operating temperature range (C) -40 to 125 Rating Catalog open-in-new Find other Flyback controllers

Package | Pins | Size

SOIC (D) 7 29 mm² 4.9 x 6 open-in-new Find other Flyback controllers

Features

  • < 10-mW No-Load Power
  • Primary-Side Regulation (PSR) Eliminates Opto-Coupler
  • ±5% Voltage and Current Regulation Across Line and Load
  • 700-V Start-Up Switch
  • 100-kHz Maximum Switching Frequency Enables High-Power Density Charger Designs
  • Resonant Valley-Switching Operation for Highest Overall Efficiency
  • Frequency Jitter to Ease EMI Compliance
  • Wide VDD Range Allows Small Bias Capacitor
  • Clamped Gate-Drive Output for MOSFET
  • Overvoltage, Low-Line, and Overcurrent Protection Functions
  • Programmable Cable Compensation (UCC28710)
  • NTC Resistor Interface (UCC28711, UCC28712 and UCC28713) with Fixed Cable Compensation Options
  • SOIC-7 Package
  • Create a Custom Design Using the UCC28710 With the WEBENCH® Power Designer

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Description

The UCC2871x family of flyback power supply controllers provides isolated-output Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.

An internal 700-V start-up switch, dynamically-controlled operating states and a tailored modulation profile support ultra-low standby power without sacrificing start-up time or output transient response.

Control algorithms in the UCC28710 family allow operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a MOSFET power switch. Discontinuous conduction mode (DCM) with valley switching reduces switching losses. Modulation of switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

The controllers have a maximum switching frequency of 100 kHz and always maintain control of the peak-primary current in the transformer. Protection features help keep primary and secondary component stresses in check. The UCC28710 allow the cable compensation to be programmed. The UCC28711, UCC28712 and UCC28713 devices allow remote temperature sensing using a negative temperature coefficient (NTC) resistor while providing fixed cable-compensation levels.

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Technical documentation

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No results found. Please clear your search and try again. View all 11
Type Title Date
* Datasheet UCC2871x Constant-Voltage, Constant-Current Controller With Primary-Side Regulation datasheet (Rev. C) Jun. 30, 2017
White papers Power Electronics in Motor Drives: Where is it? (Rev. A) Oct. 01, 2019
Application notes Minimize Standby Consumption for UCC287XX Family Aug. 01, 2019
Application notes Troubleshooting TI PSR controllers Oct. 03, 2016
Application notes Choosing Standard Recovery Diode or Ultra-Fast Diode in Snubber Oct. 09, 2015
White papers Control Challenges for Low Power AC/DC Converters Oct. 02, 2015
White papers Control Challenges for Low Power AC/DC Converters (PPT) Oct. 02, 2015
Technical articles Designing multiple output converters with primary side sensing Aug. 04, 2015
Technical articles Power Tips: Powering the IoT in Our Homes Jun. 11, 2014
More literature Exposing the Inner Behavior of a Quasi-Resonant Flyback Converter Oct. 29, 2013
Technical articles Power Tips: AC/DC phone and tablet chargers Aug. 20, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
UCC24630 65W AC/DC Adapter
UCC24630EVM-636
document-generic User guide
$99.00
Description

This is a high efficiency 65W AC/DC design using UCC24630 Synchronous Rectification Controller for a Universal input (85Vac to 265Vac) to 19.5V @3.33A output exceeding CoC-5 Tier2 and DOE Level VI performance requirements for external power supplies.

Features
  • 91.49% @115V AC, 89.81% @230V AC 4-point average efficiency 
  • 83.14% @120V AC, 82.24% @230V AC 10% load efficiency
  • 59mW No load Power consumption at 230V AC
  • Fast turn-on time
  • <80mV output voltage ripple
  • AC line input UVLO protection
View details
EVALUATION BOARDS Download
UCC28711 evaluation module
UCC28711EVM-160
document-generic User guide
$49.00
Description
The Texas Instruments UCC28711EVM-160 evaluation module (EVM) helps designers evaluate the performance of the UCC28711 Constant-Voltage, Constant-Current PWM with Primary-Side Regulation. The 5W EVM is used for evaluating an off line adapter for USB applications. It converts a 90V to 265V RMS input (...)
Features
  • <10mW no load power
  • Primary Side Regulation (PSR) eliminates opto-coupler
  • +/- 5% Voltage & Current Regulation
  • 100 KHz max switching frequency enables high power density charger designs
  • Quasi-resonant valley switching operation for highest overall efficiency
  • Wide VDD range (35V) allows small bias (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
The UCC28720EVM-212 is a 5W evaluation module for evaluating an off line adapter for USB applications. It is intended for evaluation purposes and is not intended to be an end product. The UCC28720EVM-212 converters 100V to 240V RMS input voltage down to 5V DC, with a 1A current limit for USB adapter (...)
Features
  • <10mW no load power
  • Primary Side Regulation (PSR) eliminates opto-coupler
  • +/- 5% Voltage & Current Regulation
  • Quasi-resonant valley switching operation for highest overall efficiency
  • Wide VDD range (35V) allows small bias capacitor
  • Drive Output for low cost Bipolar
  • Protection Functions: Over Voltage, Low (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The UCC28740EVM-525 evaluation module is a 10W off-line discontinuous mode (DCM) flyback converter that provides constant-voltage (CV) and constant-current (CC) output regulation. It uses optical coupler feedback for tight voltage regulation and improved the transient response to large load steps (...)

Features
  • Universal AC input, 5V/2.1A output
  • <20mW no load power
  • Avg. efficiency > 80%
  • Opto-Coupled Feedback for Constant Voltage Regulation and Fast Dynamic Response
  • Primary Side Control for Tight Constant Current Performance (± 5% Output Current Regulation)
  • Internal 700V Start-Up Switch to Start up the Supply (...)
View details

Design tools & simulation

SIMULATION MODELS Download
SLUM464.ZIP (17619 KB) - PSpice Model
SIMULATION MODELS Download
SLUM538.ZIP (119 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLUM539.TSC (224 KB) - TINA-TI Reference Design

Reference designs

REFERENCE DESIGNS Download
Peak efficiency at 99%, 585-W high-voltage buck reference design with standard Si-MOSFETs
PMP30446 — This reference design converts a DC-input source in the range of 450 V to 780 V into non-isolated 390 V at 1.5 A. This is an alternative solution to SiC-FET and SiC-Diode buck converter, since the actual power stage uses only standard silicon components. In order to employ 600 V rated devices, the (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
350W PSU with Universal AC Input and 28V Output - Reference Design
PMP9531 — High efficiency, high power factor and reliable power supply are the main focus of the PMP9531 design for motor driver applications.  Transition mode (TM) power factor correction (PFC) with UCC28051 and LLC series resonant converter (SRC) with UCC25600 are applied in PMP9531.  In addition (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Universal AC Input High Side Buck Converter Reference Design
PMP21487 — This reference design is a simple, low-cost high side Buck converter to convert universal AC input voltage (85Vac to 265Vac) to a non-isolated 22V/250mA DC output with UCC28710 controller.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
90VAC to 150VAC Input, 12V/1.34A Output Bias Supply Reference Design
PMP20495 — The PMP20495 is a compact and high voltage buck converter design with 90VAC to 150VAC input and 12V/1.34W output. This non-isolated Buck design incorporates the UCC28710 primary side regulation controller to provide a well regulated a 12V/1.34A output. The PMP20495 design is built on PMP20122 board (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
85VAC to 264VAC Input, 12V/500mA Output Bias supply Reference Design
PMP20122 — The PMP20122 is a compact and thermally efficient design intended to step down a wide range of AC inputs (85VAC to 264VAC). This non-isolated buck design incorporates the UCC28710 PSR controller to provide a well regulated a 12V/500mA output. The PMP20122 board is designed with complete standard (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Universal AC input, 48V/200W Primary-side Regulated Flyback Reference Design
PMP10816 — The PMP10816 reference design uses the UCC28710 flyback controller to generate a 48V/200W output from a universal AC input. The primary-side regulation technique implemented by the UCC28710 eliminates the need for an opto coupler, reducing the size and cost of the design. In addition, the valley (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Universal AC Input to 30Vmax@6A Lead-acid Battery Charger Reference Design with PFC
PMP10110 — The PMP10110 design converts the universal input AC voltage to isolated 17V...30V@6A and is suitable to charge lead-acid or Li-Ion batteries. The converter is a constant-V and constant-I genarator and the set points for output voltage (charge level) and current are settable by means of two PWM (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Primary-Side Regulated Flyback w/85-265VAC Input High Output Energy Storage Reference Design
PMP8930 — The PMP8930 reference design uses the UCC28710 primary-side regulated flyback controller to generate a 20V output from a univeral AC input. a bulk capacitor with slow-charge-fast-discharge circuit is placed at flyback output to provide long hold up time for the following step-down DC-DC stages (...)
REFERENCE DESIGNS Download
Universal Line Power Supply for PLC using PSR Flyback and Compact DC/DC Stages Reference Design
PMP9185 — The PMP9185 reference design uses the UCC28710 primary-side regulated flyback controller to generate a 15V output from a univeral AC input with maximum 20W output power followied by DC/DC and LDO stages using TPS54229 and TPS650250, and 5V, 3.3V, 1.8V and 1.2V are provided. A switch on the PCB (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
85-265VAC Input, 5V/2A PSR Flyback Reference Design
PMP11185 — The PMP11185 reference design uses the UCC28710 to provide an isolated 5V at 2A output.  The UCC28710 implements primary-side regulation, eliminating the need for an opto-coupler and reducing the size and cost of the design.  The supply has been optimized for minimal standby power consumption.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
105 to 440VAC Input, 24V/400 & 5V/20mA Output Low Cost & Compact Bias Supply Reference Design
PMP11090 — The PMP11090 reference design is a compact and thermally efficient design intended to step down a wide range of AC inputs (105VAC to 440VAC). This non-isolated Buck design incorporates the UCC28710 PSR controller and TLV70450DBVT LDO. The PMP11090RevA board are designed with complete standard (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
85V - 265V AC in, 12V/3.3A AC/DC Open Frame Power Supply Based on PSR Flyback Reference Design
PMP9576 — This reference design provides an isolated 12V/3.3A output from a universal 85V-265V AC input.  This design achieves efficiencies greater than 84%. Employing the UCC28710D Primary Side Regulation (PSR) Flyback controller eliminates the opto-coupler and secondary side regulation components (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
85VAC to 265VAC Input 15V/400mA Output, Low Cost and Compact Bias Supply Reference Design
PMP10319 — The PMP10319 reference design is a compact and thermally efficient design intended to step down a wide range of AC inputs (85VAC to 265VAC). This non-isolated Buck design incorporates the UCC28710 PSR controller. The PMP10319RevA board are designed with complete standard components (including (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Universal AC Input, Dual 12V, 5V Output PSR Quasi-Resonant Flyback Converter Reference Design
PMP10168 — The PMP10168 reference design uses the UCC28710 primary-side regulated quasi-resonant flyback controller to generate a 12V and a 5V output from an universal AC input. It is a low cost solution because no optocoupler is needed to regulate the output voltages.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Universal AC Input, 12Vout 1A Power Supply with Low Standby Power Reference Design
PMP4480 — The PMP4480 is a power reference design with a universal AC input and a DC isolated
output of 12V at 1A. It implements a high efficiency primary side controller UCC28710. The system achieves high efficiency. The board measures with 37mmX31mmX15mm. The PMP4480 is fully tested and passes EMC (CE (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
PSR Flyback using UCC28710 for Universal 85-265VAC Input with 12V/60W Rated Output Reference Design
PMP10350 — This design uses the PSR controller UCC28710 for a 12V/60W DCM Flyback converter. The valley switching of the UCC28710 allows this low-cost design to achieve a maximum load efficiency of  84.3% at 120VAC/60Hz input and 86% at 230VAC/50Hz input.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
310W PSU Using Transition Mode Bridgeless PFC and LLC-SRC - Reference Design
PMP9640 — High efficiency, high power factor and reliable power supply are the main focus of the PMP9640 design for motor driver applications.  Low cost analog transition mode (TM) PFC controller UCC28051 has been used for bridgeless PFC as the first conversion stage of the PMP9640.  LLC series (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Universal AC-DC Buck Converter Using UCC28710 Reference Design
PMP9530 — The PMP9530 reference design uses a buck converter to convert universal AC input voltage (85Vac to 265Vac) to a 18V/300mA DC output with UCC28710 controller. High efficiency and circuit simplicity is achieved with quasi-resonant valley-switching operation and a Buck topology.
Design files
View details
REFERENCE DESIGNS Download
Universal AC Input 5V/2A USB Adaptor with PSR Reference Design
PMP9202 — This reference design provides an isolated 5V/2A output from a universal 85-265VAC input. This design uses the UCC28710 PWM controller with primary-side regulation (PSR) eliminating the need for an optocoupler and saving cost. Maximum load efficiency is over 82%. The UCC28710 also provides accurate (...)
REFERENCE DESIGNS Download
Universal AC-DC Buck Converter using UCC28710 Reference Design
PMP9087 — The PMP9087 reference design uses Buck converter to convert universal AC input voltage (85Vac to 265Vac) to a 12V/200mA DC output with UCC28710 controller. High efficiency and circuit simplicity is achieved with quasi-resonant valley-switching operation and the utilization of Buck topology.
REFERENCE DESIGNS Download
Primary-Side Regulated Flyback with 85-265VAC Input (24V @ 1.7A) Reference Design
PMP9041 — The PMP9041 reference design uses the UCC28710 primary-side regulated flyback controller to generate a 24V/40W output from a univeral AC input. The valley switching of the UCC28710 allows this low-cost design to achieve a maximum load efficiency of 90%; no load losses are less than 50mW.
REFERENCE DESIGNS Download
230VAC Input 5.5V/250mA Non-Isolated Flyback Converter Reference Design
PMP8968 — This reference design creates a non-isolated 5.5V at 250mA from a 230VAC Input. This supply is to designed to fit into a very small volume with less than 10mm total height.
REFERENCE DESIGNS Download
Universal AC input 5V@1.2A cube charger with <10mW no-load power
PMP4344 — This reference design demostrates a low cost single PCB solution for 5V1.2A cube charger. By using primary side regulation (PSR) mode chip UCC28710, < 10-mW No-Load power is achieved. The overall size is limited in 22mm(L)X21mm(W)x20mm(H).
REFERENCE DESIGNS Download
85VAC-265VAC Input, 5V@2A Eco-Charger Reference Design for Tablets and Smart Phones
PMP8363 — This reference design uses the UCC28710 in a quasi-resonant flyback to generate an isolated 5V at up to 2A. This design is over 80% efficient while charging a device. In addition, the energy saving features of the UCC28710 allow this design to consume less than 20mW when plugged into an outlet with (...)
document-generic Schematic document-generic User guide

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