Product details

Control mode Primary-side regulation Frequency (Max) (kHz) 100 UVLO thresholds on/off (V) 21/8 Duty cycle (Max) (%) 99 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 Device type Controllers Topology Buck, Flyback
Control mode Primary-side regulation Frequency (Max) (kHz) 100 UVLO thresholds on/off (V) 21/8 Duty cycle (Max) (%) 99 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 Device type Controllers Topology Buck, Flyback
SOIC (D) 7 29 mm² 4.9 x 6
  • < 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
  • < 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

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.

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.

Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 6
Type Title Date
* Data sheet UCC2871x Constant-Voltage, Constant-Current Controller With Primary-Side Regulation datasheet (Rev. C) 30 Jun 2017
Application note Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips 31 Aug 2021
Application note Minimize Standby Consumption for UCC287XX Family 01 Aug 2019
White paper Control Challenges for Low Power AC/DC Converters 02 Oct 2015
White paper Control Challenges for Low Power AC/DC Converters (PPT) 02 Oct 2015
More literature Exposing the Inner Behavior of a Quasi-Resonant Flyback Converter 29 Oct 2013

Design & development

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

Evaluation board

UCC28711EVM-160 — UCC28711 evaluation module

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 (...)
In stock
Limit: 3
Simulation model

UCC2871x PSpice Transient Model

SLUM464.ZIP (17619 KB) - PSpice Model
Simulation model

UCC2871x TINA-TI Transient Spice Model

SLUM538.ZIP (119 KB) - TINA-TI Spice Model
Simulation model

UCC2871x TINA-TI Transient Reference Design

SLUM539.TSC (224 KB) - TINA-TI Reference Design
Calculation tool

UCC2871x Calculator

SLUC590.ZIP (95 KB)
Reference designs

PMP4432 — 5.3V 2A Mobile Phone Charger Reference Design

PMP4432 is fully verified 5V2A adapter solution which passes EMI test. The primary side regulator UCC28713 is used in the primary side with diode rectifier in the secondary side. The solution achieves high efficiency and meets DOE-6 standard requirement. The overall form factor is limited in (...)
Reference designs

PMP10351 — 85-265VACin, 12V/1.5A PSR Flyback Reference Design

This reference design uses the UCC28713 primary-side regulated (PSR) flyback controller to generate a 12V/1.5A output from a univeral AC input. The valley switching of the UCC28713 allows this low-cost design to achieve an average efficiency over 87%; no load losses are less than 50mW.  The (...)
Reference designs

PMP4390 — Universal AC Input 15W Adapter with Energy Star 6 Efficiency Rating Reference Design

This 5V / 3A adapter solution is fully tested and passes EMI and EMC (CE,RE) safety requirements. It implements a high efficiency primary side controller UCC28713 and synchronous rectifier UCC24610 pair. The efficiency of the design complies with Energy Star 6 and is designed to fit into small form (...)
Reference designs

PMP4378 — AC in 5V2.4A high power density adapter with <30mW no load power

PMP4378 is fully verified adapter solution which passes EMI and thermal test.The PSR controller UCC28713 and S.R controller UCC24610 are used in the design and achieves high efficiency which easily meets Energy star 6 (average 82.7%@230Vac with 180mohm cable). The overall form factor is limited in (...)
Package Pins Download
SOIC (D) 7 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos