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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 | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | fswitch (kHz) | NPRI : NSEC : NAUX | ISAT (mA) | Size | ISAT,10% (A) | ISAT,30% (A) | IR,40K (A) | IRP,40K (A) | fres (MHz) | Version | IR (A) | L (mH) | RDC max. (Ω) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 750314940 | SPEC | 4 files | Active i| Production is active. Expected lifetime: >10 years. | MID-OLTI Offline Flyback Transformers for Texas Instruments | 50 - 283 V (AC) | 15 | 0.025 | – | 100 | 2.75:1 | 110 | EP7 | – | – | – | – | – | – | – | 4 | – | – | 625 | – | 9.78 | 9.5 | 10.54 | SMT | ||
 | 7508112341 | SPEC | 4 files | Active i| Production is active. Expected lifetime: >10 years. | MID-OLTI Offline Flyback Transformers for Texas Instruments | 85 - 265 V (AC) | 12 | 3 | 12 | 60 - 120 | 7:1:1 | 3300 | EFD25 | – | – | – | – | – | – | – | 0.38 | – | – | 4500 | – | 26.3 | 33 | 14.76 | THT | ||
 | 744861018 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TFC Common Mode Power Line Choke | – | – | – | – | – | – | – | UU 9.8 H | – | – | – | – | – | – | 1 | 1.8 | 0.31 | 300 | 2500 | MnZn | 17 | 15.5 | 12.5 | THT | ||
 | 7447709102 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PD SMT Power Inductor | – | – | – | – | – | – | – | 1210 | 1 | 1.25 | 0.9 | 1 | 1 | Standard | 0.9 | 1 | 1.2 | – | – | – | 12 | 12 | 10 | SMT |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 750314940 | SPEC | |
| 7508112341 | SPEC | |
| 744861018 | SPEC | |
| 7447709102 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | fswitch (kHz) | NPRI : NSEC : NAUX | ISAT (mA) | Size | ISAT,10% (A) | ISAT,30% (A) | IR,40K (A) | IRP,40K (A) | fres (MHz) | Version | IR (A) | L (mH) | RDC max. (Ω) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples |
|---|