Datasheet Texas Instruments UCC28521DWR
| Manufacturer | Texas Instruments |
| Series | UCC28521 |
| Part Number | UCC28521DWR |
Advanced PWM/PFC Combination Controller with TEM/TEM Modulation 20-SOIC -40 to 85
Datasheets
Advanced PFC/PWM Combination Controller w/Trailing-Edge/Trailing-Edge Modulation datasheet
PDF, 781 Kb, Revision: D, File published: Nov 15, 2005
Extract from the document
Prices
Status
| Lifecycle Status | Obsolete (Manufacturer has discontinued the production of the device) |
| Manufacture's Sample Availability | No |
Packaging
| Pin | 20 |
| Package Type | DW |
| Industry STD Term | SOIC |
| JEDEC Code | R-PDSO-G |
| Width (mm) | 7.5 |
| Length (mm) | 12.8 |
| Thickness (mm) | 2.35 |
| Pitch (mm) | 1.27 |
| Max Height (mm) | 2.65 |
| Mechanical Data | Download |
Replacements
| Replacement | UCC28510DW |
| Replacement Code | F |
Parametrics
| Approx. Price (US$) | 2.15 | 1ku |
| Control Method | CCM |
| Device Type | PFC+PWM |
| Operating Supply Current(mA) | 4 |
| Operating Supply(Max)(V) | 18 |
| Operating Temperature Range(C) | -40 to 85 |
| Package Group | SOIC |
| Package Size: mm2:W x L (PKG) | 20SOIC: 132 mm2: 10.3 x 12.8(SOIC) |
| Peak Output Sink Current Gate Drive(A) | 3.5 |
| Peak Output Source Current Gate Drive(A) | -2.5 |
| Practical Operating Frequency(Max)(MHz) | 0.5 |
| Rating | Catalog |
| Special Features | 750W Applications Average Current Mode Enable |
| Startup Current(mA) | 0.1 |
| UVLO Thresholds On/Off(V) | 10.2/9.7 |
Eco Plan
| RoHS | Not Compliant |
| Pb Free | No |
Design Kits & Evaluation Modules
- Evaluation Modules & Boards: UCC28528EVM
UCC28528 Evaluation Module
Lifecycle Status: Obsolete (Manufacturer has discontinued the production of the device) - Evaluation Modules & Boards: UCC28521EVM
UCC28521 Evaluation Module
Lifecycle Status: Active (Recommended for new designs)
Application Notes
- UCC28517 100-W PFC power converter with 12-V, 8-W bias supply, Part 2PDF, 224 Kb, File published: Feb 28, 2005
To conclude the review of the UCC28517 PFC supply, this article covers the design of the second 12-V, 8-W power stage to be used as an auxiliary bias supply. - UCC28517 100-W PFC power converter with 12-V, 8-W bias supply, Part 1PDF, 202 Kb, File published: Feb 28, 2005
Power factor corrected (PFC) preregulators are generally used in ac/dc converters operating above 75 W or to meet line harmonic requirements. This article reviews the design of a 100-W ac/dc power stage with PFC. - A New Synchronization Circuit for Power Converters (Rev. A)PDF, 209 Kb, Revision: A, File published: Apr 21, 2010
The synchronization of multiple PWM and PFC controllers is desirable for many reasons. The most common reason is that it keeps all the noise at one particular frequency and makes it easier to filter. The circuit described changes the slope of the ramp to lock the converter’s switching frequency to an applied signal by a phase locked loop turning it into a voltage controlled oscillator. Furthermore
Model Line
Series: UCC28521 (3)
- UCC28521DW UCC28521DWR UCC28521DWRG4
Manufacturer's Classification
- Semiconductors > Power Management > Offline and Isolated DC/DC Controllers and Converters > Power Factor Correction
