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Texas Instruments UCC28742 | Demoboard UCC28742EVM-001
Using the UCC28742EVM-001 10-W Converter User's Guide
Overview
| Topology | Flyback Converter |
| Input voltage | 85-265 V |
| Switching frequency | 80-130 kHz |
| Output 1 | 5 V / 2 A |
| IC revision | B |
Description
The UCC28742EVM-001 is a 10-W evaluation module for evaluating an off-line power converter applications. The EVM meets CoC tier 2 and DoE Level 6 efficiency and standby power requirements. It is intended for evaluation purposes and is not intended to be an end product. The UCC28742EVM-001 converters 85-VRMS to 265-VRMS input voltage down to 5-VDC, with a 2.1-A current limit.
Features
- Opto-Coupled Feedback Enables up to 1% Regulation
- Accurate Current Limit with Overload Timeout Protection and Delayed Hiccup Response Resonant-Ring Valley-Switching Operation for Highest Overall Efficiency
- 80-kHz Maximum Switching Frequency
- Frequency Dithering to Ease EMI Compliance
- Clamped Gate-Drive Output for MOSFET
- Ultra-Low Start-Up Current and Large VDD Hysteresis
- High Value Start-Up Resistor
- Low Bias Capacitance
- Fault Protections
- Input Low Line
- Output Over-Voltage
- Over-Current
- Short-Circuit
- SOT23-6 Package
- Create a Custom Design Using the UCC28742 with the WEBENCH® Power Designer
Typical applications
- Smart Electricity Meters
- Industrial and Medical AC-to-DC Power Supplies/ Bias Supply for UPS, Server PSU, etc./ Power Supply for Cable Modem, Television, Set-Top Box, and Wireless Routers/ AC-to-DC Power Supply for Appliances
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | Vaux 2 (V) | fswitch (kHz) | L (µH) | NPRI : NSEC : NAUX | VT (V (AC)) | L (mm) | W (mm) | H (mm) | Mount | Size | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 750315841 | SPEC | 4 files | Active i| Production is active. Expected lifetime: >10 years. | MID-OLTI Offline Flyback Transformers for Texas Instruments | 85 - 265 V (AC) | 5 | 2 | 11 | 16 | 60 | 750 | 13:1:2.25:3.25 | 3750 | 17.65 | 16.64 | 13.21 | THT | RM6 | – | – | – | – | – | – | ||
 | 742792121 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | – | – | – | – | 3.2 | 1.6 | 1.1 | SMT | 1206 | 300 | 330 | 110 MHz | 3000 | 0.06 | High Current |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | Vaux 2 (V) | fswitch (kHz) | L (µH) | NPRI : NSEC : NAUX | VT (V (AC)) | L (mm) | W (mm) | H (mm) | Mount | Size | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | Samples |
|---|