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Texas Instruments UCC28051D | Demoboard PMP9730
PFC Controller for low to medium power applications requiring compliance with IEC 61000-3-2
Overview
| Topology | Flyback Converter |
| Input voltage | 85-265 V |
| Output 1 | 12 V / 3 A |
| IC revision | D |
Description
The UCC38050 and UCC38051 are PFC controllers for low-to-medium power applications requiring compliance with IEC 1000-3-2 harmonic reduction standard. The controllers are designed for a boost preregulator operating in transition mode (also referred to as boundary-conduction mode or critical conduction-mode operation). They feature a transconductance voltage amplifier for feedback error processing, a simple multiplier 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 transition mode operation, the PWM circuit is self-oscillating, with the turnon being governed by an inductor zero-current detector (ZCD pin), and the turnoff being governed by the current-sense comparator. Additionally, the controller provides features such as peak current limit, default timer, overvoltage protection (OVP) and enable.
Features
Transition Mode PFC Controller for Low Implementation CostIndustry Pin Compatibility With Improved Feature SetImproved Transient Response With Slew-Rate ComparatorZero Power Detect to Prevent Overvoltage Protection (OVP) During Light Load ConditionsAccurate Internal VREF for Tight Output RegulationTwo UVLO OptionsOVP, Open-Feedback Protection, and Enable Circuits±750-mA Peak Gate Drive CurrentLow Start-Up and Operating CurrentsLead (Pb)-Free Packages
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | ISAT,10%(A) | ISAT,30%(A) | IR,40K(A) | IRP,40K(A) | fres(MHz) | Size | Version | VIN | VOut1(V) | IOut1(A) | Vaux(V) | fswitch(kHz) | NPRI : NSEC : NAUX | ISAT(mA) | IR(A) | L(µH) | RDC max.(mΩ) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PD SMT Power Inductor, 1 A, 1.25 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Saturation Current @ 10%1 A | Saturation Current @ 30%1.25 A | Rated Current0.9 A | Performance Rated Current1 A | Self Resonant Frequency1 MHz | Size1210 | VersionStandard | – | – | – | – | – | – | – | Rated Current0.9 A | Inductance1000 µH | DC Resistance1200 mΩ | – | – | – | Length12 mm | Width12 mm | Height10 mm | MountSMT | ||||
 | WE-TFC Common Mode Power Line Choke, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TFC Common Mode Power Line Choke | – | – | – | – | – | SizeUU 9.8 H | – | – | – | – | – | – | – | – | Rated Current1 A | Inductance1800 µH | DC Resistance310 mΩ | Rated Voltage300 V (AC) | Insulation Test Voltage2500 V (AC) | MaterialMnZn | Length17 mm | Width15.5 mm | Height12.5 mm | MountTHT | ||||
 | 750314940 | Transformer, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Transformer | – | – | – | – | – | SizeEP7 | – | Input Voltage 50 - 283 V (AC) | Output Voltage 115 V | Output Current 10.025 A | – | Switching Frequency 100 | Turns Ratio2.75:1 | Saturation Current110 mA | – | Inductance4000 µH | – | – | Insulation Test Voltage625 V (AC) | – | Length9.78 mm | Width9.5 mm | Height10.54 mm | MountSMT | |||
 | WE-OLTI Offline Flyback Transformers, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-OLTI Offline Flyback Transformers | – | – | – | – | – | SizeEFD25 | – | Input Voltage 85 - 265 V (AC) | Output Voltage 112 V | Output Current 13 A | Auxiliary Voltage12 V | Switching Frequency 60 - 120 | Turns Ratio7:1:1 | Saturation Current3300 mA | – | Inductance380 µH | – | – | Insulation Test Voltage4500 V (AC) | – | Length26.3 mm | Width33 mm | Height14.76 mm | MountTHT |