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Texas Instruments UCC28740 | Demoboard PMP30826
Offline supercapacitor backup power supply with active cell balancing reference design
Overview
| Topology | Flyback Converter |
| Input voltage | 96-552 V |
| Output 1 | 4 V / 3 A |
| IC revision | B |
Description
This reference design provides a backup voltage during a power interruption. It manages the charging of supercapacitors directly from the mains voltage (96 VAC - 272 VAC). The UCC28740 provides constant-voltage (CV) and constant-current (CC) output regulation. The supercapacitor capacitance and voltage define the energy that is available for the backup.
Features
- Electric double-layer capacitor charger
- Protection functions: over voltage, low line, over current and short circuit
- Active cell balancing
- Complete tested design with available design files and test report
Typical applications
- Single-phase electricity meter
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | L (µH) | IR (A) | ISAT (A) | RDC max. (Ω) | fres (MHz) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 885012109004 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 6.3 V(DC) | 100 µF | ±20% | 6.3 | 1210 | -55 °C up to +85 °C | 10 | 0.001 GΩ | X5R Class II | 3.2 | 2.5 | 2.5 | 0.6 | 7" Tape & Reel | – | – | – | – | – | – | ||
 | 768772221 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TI HV Radial Leaded Wire Wound Inductor (High Voltage) | – | – | – | 8095 | -40 °C up to +125 °C | – | – | – | 7.8 | 7.8 | 9.5 | – | – | 220 | 0.9 | 1.3 | 0.6 | 3.7 | THT |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 885012109004 | SPEC | |
| 768772221 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | L (µH) | IR (A) | ISAT (A) | RDC max. (Ω) | fres (MHz) | Mount | Samples |
|---|
