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Product details

Parameters

Device type Single-phase PFC Control method TM Operating supply (Max) (V) 34 Operating supply current (mA) 2.2 UVLO thresholds on/off (V) 10.65/8.85 Features < 150W Applications, Audible noise minimization circuitry, Low Power, OVP, Soft Start, Transition Mode Control Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other Power factor correction (PFC) controllers

Package | Pins | Size

SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 open-in-new Find other Power factor correction (PFC) controllers

Features

  • Ultra-low no-load input power enables < 80-mW standby power at 230 VAC in PFC+LLC system
  • Excellent light load efficiency and high efficiency over wide range of load due to multi-mode TM and DCM control
  • Enables low system cost through FET drain valley synchronized turn-on which eliminates need for second winding on the boost inductor
  • Enables compliance to green power standards without disabling PFC
    • EuP Lot 6 Tier 2, CoC Ver. 5 Tier 2, Energy Star Ver. 6.1, DoE Level VI
  • Burst mode with soft-entry and soft-exit periods enables ultra-low audible noise output
  • Enhanced error amplifier, responds rapidly to load steps without degrading input current distortion
  • User adjustable valley delay ensures valley switching
  • Low start-up current consumption (<46 µA)
  • Wide VCC range 8.5 V to 34 V
  • Cycle-by-cycle current limit
  • Second independent output over-voltage protection
  • Integrated over-temperature protection
  • Create a custom design using the UCC28056 device with the WEBENCH® Power Designer

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Description

The UCC28056 device drives PFC boost stages based on an innovative mixed mode method that operates in transition mode (TM) at full load and transitions seamlessly into discontinuous conduction mode (DCM) at reduced load, automatically reducing switching frequency. This device incorporates burst mode operation to further improve light load performance, enabling systems to meet challenging energy standards while eliminating the need to switch off the PFC. UCC28056 can drive a PFC power stage up to 300 W, ensuring sinusoidal line input current with low distortion, close to unity power factor. When used with the LLC controller UCC256403/4, and dual synchronous rectifier controller UCC24624 less than 80 mW system standby power can be achieved, enabling PFC always on architecture and eliminating the need for an auxiliary converter. This with FET Drain valley turn-on with simple boost inductor allows fewest component count and reduced system cost.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 11
Type Title Date
* Datasheet UCC28056 6-Pin Single-Phase Transition-Mode PFC Controller datasheet (Rev. E) Aug. 28, 2019
Technical articles How to reduce audible noise and power consumption at standby in your AC/DC design Apr. 22, 2020
User guide UCC28056EVM-296 Evaluation Module User Guide (Rev. C) Oct. 31, 2019
Application note Optimizing Efficiency and Standby Power With the UCC28056 in Offline Application (Rev. B) Aug. 13, 2019
Application note Exceeding Modern Energy Standards with 'Always On' PFC and LLC Controllers​ (Rev. B) Aug. 01, 2019
Application note UCC28056,Using Auxiliary winding voltage for driving ZCD/CS Pin (Rev. B) Aug. 01, 2019
User guide PFCLLCSREVM-034 User Guide Jul. 26, 2019
Application note UCC28056 Selection Guide Jun. 24, 2019
Technical articles Three considerations for achieving high efficiency and reliability in industrial AC/DC power supplies Apr. 04, 2019
Technical articles Gain ultra-high power density for 100-W USB Power Delivery adapters Mar. 05, 2019
Technical articles Crank up your power supply with LLC controllers Oct. 22, 2017

Design & development

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

Hardware development

EVALUATION BOARD Download
299
Description

PFCLLCSREVM034 is a 168-W AC/DC supply with a transition-mode power-factor-correction front end and isolated half-bridge LLC resonant converter with synchronous rectification. This EVM accepts AC input from 90 Vrms to 264 Vrms and outputs 12-V DC with 168-W full-load output power.

Features
  • Low cost single layer PCB
  • High efficiency meeting CoC Tier II
  • Excellent no load to full load transient response
  • X capacitor discharge function
EVALUATION BOARD Download
149
Description

The UCC28056EVM is an EVM of PFC converter with UCC28056, a CrM/DCM Mixed Mode PFC Controller. The EVM accepts an input of 85Vac to 265Vac and provides an output of 390Vdc with full load output power of 165W.

Features
  • Unity power factor and optimized THD
  • Industry best light load efficiency with advanced light load efficiency management
  • <50mW no-load power consumption 
  • No Inductor ZCD Winding Required, allows Low Cost without compromising Power Factor
  • Fast, Enhanced Dynamic Response (non-linear control)
  • (...)

Design tools & simulation

SIMULATION MODEL Download
SLUM620.ZIP (157 KB) - SIMPLIS Model
SIMULATION MODEL Download
SLUM688.ZIP (749 KB) - SIMPLIS Model
SIMULATION MODEL Download
SLUM689.ZIP (691 KB) - SIMPLIS Model
SIMULATION MODEL Download
SLUM690.ZIP (637 KB) - SIMPLIS Model
CALCULATION TOOL Download
SLUC641B.ZIP (321 KB)

Reference designs

REFERENCE DESIGNS Download
180-W universal input PFC + LLC TV power supply reference design
PMP40580 — This AC to DC power supply design for TV application provides 12-V, 5-A and 150-V, 0.8-A output from universal AC voltage (90 Vac to 264 Vac). The design uses CRM/DCM PFC controller UCC28056, and LLC controller UCC256404 with enhanced burst mode which enabled for low standby power and smaller (...)
document-generic Schematic
REFERENCE DESIGNS Download
22-W/in3, 93.1% peak efficiency, 100-W USB-PD 3.0 AC/DC adapter reference design with Si MOSFET
TIDA-010047 — This fully-tested reference design is a high-efficiency, high-power-density, AC/DC adapter solution with a wide input voltage range (100- to 240-V AC) for laptop adapters and smartphone charger applications. This design consists of a front-end transition-mode (TM) power factor correction (PFC (...)
document-generic Schematic
REFERENCE DESIGNS Download
94% Peak efficiency, 150W norm, 240W peak industrial AC/DC power supply with CC/CV reference design
TIDA-010038 — This compact, high efficiency, 24V DC, 150W nominal, 240W peak output at 230VAC reference design is targeted for industrial AC/DC power supplies. The circuit consists of a frontend transition mode (TrM) power factor correction(PFC) circuit based on the UCC28056, followed by a robust LLC stage for an (...)
document-generic Schematic
REFERENCE DESIGNS Download
336-W Auxless AC/DC power supply reference design with 80 PLUS platinum compatible performance
PMP22087 — This reference design is an AC/DC power supply design with critical conduction mode (CRM) PFC and half-bridge LLC series resonant converter that provides 24 V, 240-W continuous, 336-W peak output from a universal input AC voltage (90 VAC to 264 VAC). This design uses UCC28056 CRM/DCM PFC controller (...)
document-generic Schematic
REFERENCE DESIGNS Download
30-W/in3, 93.4% efficiency, 100-W AC/DC adapter reference design
TIDA-01623 — This fully-tested reference design is a high-efficiency, high-power-density, AC/DC adapter solution with a wide input voltage range (100- to 240-V AC) for laptop adapters and smartphone charger applications. This design consists of a front-end transition-mode (TM) power factor correction (PFC (...)
document-generic Schematic
REFERENCE DESIGNS Download
336-W auxless AC/DC power supply reference design with 80 PLUS platinum compatible performance
PMP21160 — This reference design uses UCC28056 CRM/DCM PFC controller and UCC256304 enhanced LLC controller with integrated driver to provide 24-V/10-A output (continuous, 14-A peak) from universal AC input. This design achieves 92.8% peak efficiency at 115-Vac input and 94.9% peak efficiency at 230-Vac input (...)
document-generic Schematic
REFERENCE DESIGNS Download
Less than 90mW Ultra-low Standby Power Auxless AC-DC Power Supply Reference Design
PMP21251 — The PMP21251 reference design uses UCC28056 CRM/DCM PFC controller and UCC256304 enhanced LLC controller with integrated driver to provide 12V/10.8A output (continuous, 14.4A peak) from universal AC input. This design achieves 92.4% peak efficiency at 115VAC input and 94.0% peak efficiency at 230VAC (...)
document-generic Schematic
REFERENCE DESIGNS Download
170W Auxless AC/DC Power Supply Reference Design with 80 PLUS Gold Compatible Performance
PMP21098 The PMP21098 reference design uses UCC28056 transition mode PFC controller and UCC25630 enhanced LLC controller with integrated driver to provide 12V/10.8A output (continuous, 14.2A peak) from universal AC input. This design achieves 91.8% peak efficiency at 115VAC input and 93.4% peak efficiency at (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 6 View options

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