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Texas Instruments UCC28910
700V Flyback Switcher with Constant-Voltage Constant-Current and Primary-side Control
Overview
| Topology | Flyback Converter |
| Input voltage | 120-375 V |
| Switching frequency | 105-125 kHz |
| Output 1 | 5 V / 1.2 A |
| IC revision | Version control disabled |
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.
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 Compensation700-V Start-Up and Smart Power Management Enables <30-mW Standby Power115-kHz Maximum Switching Frequency Design for High-Power DensityValley Switching and Frequency Dithering to Ease EMI ComplianceThermal Shut DownLow Line and Output Over-Voltage Protection
Typical applications
- Industrial Embedded Energy Monitoring
- Home Security
- Home Automation
- WI-FI Power Strip/Energy Monitor
- Appliances
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IR (A) | ISAT (A) | RDC max. (Ω) | fres (MHz) | Mount | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | fswitch (kHz) | NPRI : NSEC : NAUX | VT (V (AC)) | Size | L (mm) | W (mm) | H (mm) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 768772102 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TI HV Radial Leaded Wire Wound Inductor (High Voltage) | 1000 | 0.5 | 0.55 | 2.08 | 1.8 | THT | – | – | – | – | – | – | – | 8095 | 7.8 | 7.8 | 9.5 | ||
 | 750313739 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WE-OLTI Offline Flyback Transformers | 1100 | – | 0.65 | – | – | THT | 85 - 265 V (AC) | 5 | 1.2 | 17 | 115 | 16.5:1:3.5 | 4500 | EE16/8/5 | 20.32 | 24.38 | 16 | ||
 | 750841012 | SPEC | 5 files | Active i| Production is active. Expected lifetime: >10 years. | Transformer | 1660 | – | – | – | – | THT | 85 - 265 V (AC) | 5 | 1.2 | 12 | 70 | 16.875:1:2.25 | 3000 | EE16/7/5 | 16.9 | 19.5 | 13.31 |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 768772102 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | |
| 750313739 | SPEC | |
| 750841012 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IR (A) | ISAT (A) | RDC max. (Ω) | fres (MHz) | Mount | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | fswitch (kHz) | NPRI : NSEC : NAUX | VT (V (AC)) | Size | L (mm) | W (mm) | H (mm) | Samples |
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