UCC28910

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700V Flyback switcher with constant-voltage constant-current and primary-side control

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Product details

Parameters

Control method Current Output power 85-265 Vac (Max) (W) 7.5 Output power 175-265 Vac (Max) (W) 9.5 Vin (Min) (V) 30 Topology Buck, Flyback Duty cycle (Max) (%) 99 Frequency (Max) (kHz) 115 UVLO thresholds on/off (V) 9.5/6.5 Operating temperature range (C) -40 to 125 open-in-new Find other Offline converters

Package | Pins | Size

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

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 Compensation
  • 700-V Start-Up and Smart Power Management Enables <30-mW Standby Power
  • 115-kHz Maximum Switching Frequency Design for High-Power Density
  • Valley Switching and Frequency Dithering to Ease EMI Compliance
  • Thermal Shut Down
  • Low Line and Output Over-Voltage Protection
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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.

Control algorithms in the UCC28910 and UCC28911, combining switching frequency and peak primary current modulation, allow operating efficiencies to meet or exceed applicable standards. Discontinuous conduction mode (DCM) with valley switching is used to reduce switching losses. Built-in protection features help to keep secondary and primary component stress levels in check across the operating range. The frequency jitter helps to reduce EMI filter

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Technical documentation

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$99.00
Description

Universal input 5V, 6W isolated flyback power supply with primary side control

Features
  • 5V, 6W isolated, universal input, CV, CC flyback power supply
EVALUATION BOARDS Download
UCC28911 Evaluation Module
UCC28911EVM-718
document-generic User guide
$99.00
Description

The UCC28911EVM-718 evaluation module is an offline Flyback power supply that provides isolated output voltage and current regulation without the use of an optocoupler and secondary-side feedback components. The input accepts a voltage range of 85VAC to 265VAC, 47Hz to 64Hz. The evaluation module (...)

Features
  • Isolated 7.5W, 5V output
  • Less than 20mW standby power consumption
  • Primary side regulation eliminates opto-coupler
  • Universal off-line input voltage range
  • Output over voltage protection
  • Input under voltage protection
  • Thermal Shutdown
  • Controlled start up and restart after fault Protection

Design tools & simulation

CALCULATION TOOLS Download
SLUC503B.ZIP (91 KB)

Reference designs

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12-V/30-mA output, high-efficiency neutral-less upside-down buck AC/DC power supply reference design
PMP22210 — This reference design uses the UCC28910 in an upside-down buck topology to make a 12-V output capable of 30-mA loading from a 120-Vac input. The design achieves more than 70% efficiency at full loading. All components are placed on one side of the board to reduce assembly complexity and cost. The (...)
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PMP11064 PMP11064 is a high-efficiency AC/DC power supply reference design with universal AC input and 20V/20A output. Interleaved transition mode PFC and LLC series resonant converter is applied for 20V/20A main power. A PSR Flyback with MOSFET integrated controller is applied as the auxiliary supply. 91.2 (...)
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Primary-Side Regulated Flyback for Universal AC Input and 12V/0.3A Output Reference Design
PMP10385 The PMP10385 reference design uses the UCC28910 primary-side regulated flyback controller with integrated MOSFET to generate a 12V/0.3A output from an univeral AC input with safety isolation rated transformer. Over 80% efficiency is achieved at full load and less than 100mW power consumption is (...)
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108-VDC - 411-VDC Input non-isolated flyback reference design
PMP30364 — This offline flyback reference design uses the UCC28910 controller to generate 2 non-isolated outputs (6.5 V at 600 mA, 15 V at 67 mA) from a DC input (108 VDC - 411 VDC). The UCC28910 incorporate a 700-V power FET and a high-voltage current source for startup to achieve low stand-by power. The (...)
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Universal AC Input Integrated FET Buck Converter Reference Design
PMP21384 — This reference design utilizes a high-voltage flyback switcher, with its integrated 700-V FET, to implement an AC-to-DC high-side buck converter.
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PMP20694 — PMP20694 is high-efficiency AC/DC power supply reference design with 85VAC-300VAC input and 36V/5A output. Transition mode PFC is applied with UCC28051 to prove high power factor and boost input voltage to 450VDC.  LLC resonant converter with UCC25600 is applied to step down the 450V to 36V (...)
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TIDA-01464 — This reference design is a 200-W, dimmable, low THD AC/DC LED power supply with a tunable output voltage from 100 to 200 V. It is designed for use in outdoor lighting applications such as street lighting, road lighting, and so on. This design uses a CCM PFC as front end to achieve low  THD and (...)
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5.2W Primary-Side Regulated Flyback With 108V to 305V AC Input Reference Design
PMP30198 — The PMP30198 reference design uses the UCC28910 flyback controller with integrated MOSFET to generate two isolated outputs (18V@0.25A / 18V@0.04A) from an AC input. The UCC28910 implements primary-side regulation, eliminating the need for an opto-coupler and reducing the total component count.
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PMP20612 — The PMP20612 reference design is a high efficiency AC-DC LED driver reference design with very low total harmonic distortion (THD). This design uses CCM PFC with the UCC28180 controller to provide power factor correction (PFC) functionality from 108VAC to 305VAC input. A two-switch Flyback converter (...)
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Level 1&2 Electric Vehicle Service Equipment Reference Design
TIDA-00637 This verified TI Design provides the foundation that you need to implement a J1772 compliant Level 1 & 2 electric vehicle service equipment. It showcases safe failure modes using TI’s peripheral drivers along with integrated fault checking. It has a configurable power delivery control and (...)
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NFC Authentication for an EV Charging Station (Pile) Reference Design
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Universal Input to 15V@400mA PSR Non-Isolated Flyback with Integrated 700V Switch Reference Design
PMP10083 — A quasi-resonant non-isolated Flyback supplies 15V @ 400mA from universal input voltage (90Vac to 265Vac). A LC filter has been added on input terminals to comply with CENELEC EN50065-1 regulations and make this power supply suitable for Power Line Communication. The efficiency curve value remains (...)
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PMP10267 PMP10267 reference design uses the UCC28910 primary side regulation DCM flyback controller to generate 15V/0.25A, 12V/0.25A, and 5V/0.1A triple outputs from high line AC input. Peak efficiency of 75% is achieved in this design.
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PMP10299 The PMP10299 reference design is a wall adapter design, using the UCC28910 PSR controller for applications with universal input and three outputs. This compact design has efficiency approaching 78% at full load with a 220VAC input.
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Three Output, 7W, Isolated Fly-back Reference Design
PMP10866 This compact design is intended for use as a 14V bias.  It can connect to the secondary side of an LLC and acts as a bias for 2 separate PFCs.
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High Efficiency 410W AC/DC Power Supply Reference Design
PMP11282 PMP11282 is a high-efficiency AC/DC power supply reference design with universal AC input and 24V/17A output. Interleaved transition mode PFC and LLC series resonant converter is applied for 24V/17A main power. A PSR Flyback with MOSFET integrated controller is applied as the auxiliary supply (...)
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2W 88-269Vac Input with Dual +3.3V and -3.3V Outputs Reference Design
PMP9608 This reference design generates an isolated 2W dual output (+3.3V & -3.3V) from AC line  88 - 269VAC. The UCC28910 incorporates a 700V power MOSFET and PSR controller. It saves PCB space and reduces assembly time.
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PMP10766 The PMP10766 reference design uses Buck converter to convert universal AC input voltage  to a 15V/0.11A DC output with UCC28910 controller. Circuit simplicity is achieved with quasi-resonant valley-switching operation and the utilization of Buck topology. Peak 77% efficiency is achieved at full (...)
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PMP4447
The PMP4447 is a power reference design with a universal AC input and a DC isolated 
output of 12V at 0.5A. It implements a high efficiency primary side controller UCC28910 which has an integrated 700V high voltage MOSFET. Additionally this reference design was characterized with the high efficiency (...)
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Design files
REFERENCE DESIGNS Download
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Primary-Side Regulated Flyback with 85-265VAC Input and 5V/0.3A Output Reference Design
PMP9689 The PMP9689 reference design uses the UCC28910 primary-side regulated flyback controller with integrated MOSFET to generate a 5V/0.3A output from an univeral AC input for metering applications.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Integrated FET, Primary Side Regulated, Isolated Flyback; Universal Input to 24V@250mA Ref Design
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REFERENCE DESIGNS Download
100V-400Vdc Input, 15V/25mA Auxillary Supply Reference Design
PMP10338 This reference design generates a non-isolated 15V/25mA output from a 100V-400V DC input. It is intended to be used as an auxillary bias supply in off-line applications.  It can be connected directly to the bulk input cap, after the bridge rectifier in most AC/DC system.  The UCC28910 with (...)
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REFERENCE DESIGNS Download
Primary-Side Regulated Flyback with 90 to 305V AC Input and 15V/0.25A Output Reference Design
PMP9506 The PMP9506 reference design uses the UCC28910 primary-side regulated flyback controller with integrated MOSFET to generate a 15V/0.25A output from a 90V to 305V AC input with safety isolation rated transformer. Less than 160mW power consumption is observed during no load condition.
REFERENCE DESIGNS Download
85 to 265VAC Input 5V/7.5W Low Cost Small Size Flyback Reference Design
PMP9045 Constant Voltage/Constant Current power supply generates 5V at 1.5A output at 80% average efficiency with greater than 76% efficiency at 10% load and less than 30mW no load power. The design features primary side regulation (PSR) and integrated flyback switcher. With a low component count and low (...)
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Design files
REFERENCE DESIGNS Download
Ultra Wide Input Voltage Range AC-DC Buck Converter using UCC28910 Reference Design
PMP9176 The PMP9176 reference design uses Buck converter to convert ultra wide AC input voltage (50Vac to 275Vac) to a 9V/1.1W DC output with UCC28910 controller. Circuit simplicity is achieved with quasi-resonant valley-switching operation and the utilization of Buck topology.
REFERENCE DESIGNS Download
Primary-Side Regulated Flyback for Universal AC Input and 15V/0.25A Output Reference Design
PMP9171 The PMP9171 reference design uses the UCC28910 primary-side regulated flyback controller with integrated MOSFET to generate a 15V/0.25A output from an univeral AC input with safety isolation rated transformer. 80% efficiency is achieved at full load and less than 130mW power consumption is observed (...)
REFERENCE DESIGNS Download
Primary-Side Regulated Flyback for Universal AC Input and 16V/0.25A Output Reference Design
PMP9061 The PMP9061 reference design uses the UCC28910 primary-side regulated flyback controller with integrated MOSFET to generate a 16V/0.25A output from an univeral AC input. 80% efficiency is achieved at full load and less than 200mW power consumption is observed during no load condition.
REFERENCE DESIGNS Download
Universal 3-phase AC input with 3.3V/0.5A Output Functional Isolation Reference Design
PMP9053 — The PMP9053 reference design uses the UCC28910 primary-side regulated flyback controller with integrated MOSFET to generate a 3.3V/0.5A output from a 3-phase univeral AC input for metering applications.
REFERENCE DESIGNS Download
Universal Input to 12.2V @ 500mA Non-Isolated Quasi-Resonant Flyback Reference Design
PMP8583 — The PMP8583 is a non-isolated quasi-resonant flyback, which converts the universal input mains to 12.2V, and is limited to 0.5A. The controller UCC28910 has an internal Mosfet that is rated at 700V.
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