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Texas Instruments UCC28742 | Demoboard PMP40467
AC Input,12-V/5-A and 50-V/1-A dual-output flyback reference design
Overview
| Topology | Flyback Converter |
| Input voltage | 180-264 V |
| Switching frequency | 80-130 kHz |
| Output 1 | 12 V / 5 A |
| Output 2 | 50 V / 1 A |
| IC revision | 001 |
Description
This reference design is a 12-V/5-A and 50-V/1-A isolated dual-output auxiliary power supply. Secondary-side regulation improves the line and load regulation using UCC28742. DCM valley-switching operation enable higher efficiency at light load. All components height below 20 mm enable slim TV application.
Features
- Valley-switching enable higher efficiency at light load
- Higher integrated protection simplifies the bom cost and save space
- Components height is below 20 mm to enable slim TV application
Typical applications
- Smart Electricity Meters
- Industrial and Medical AC-to-DC Power Supplies / Bias Supply for UPS, Server PSU
- 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 | Application | C | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | Packaging | IRP,40K (A) | fres (MHz) | Size | Version | ISAT,10% (A) | ISAT,30% (A) | IR,40K (A) | IR (A) | L (mH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 890324022017CS | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTX2 Film Capacitors | Across the mains | 68 nF | X2 | 400 | 0.1 | 30 GΩ | -40 °C up to +105 °C | 7.5 | Carton | – | – | Pitch 7.5 mm | – | – | – | – | – | – | – | 275 | – | – | 10 | 6 | 12 | Boxed THT | ||
 | 744821240 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMB Common Mode Power Line Choke | – | – | – | – | – | – | -40 °C up to +125 °C | – | – | – | – | XS | THT | – | – | – | 1.5 | 4 | 140 | 250 | 1500 | MnZn | 15.8 | 7.8 | 18 | THT | ||
 | 7447709680 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PD SMT Power Inductor | – | – | – | – | – | – | -40 °C up to +125 °C | – | – | 3.9 | 5.5 | 1210 | Standard | 3.6 | 4.4 | 3.2 | 3.2 | 0.068 | 89 | – | – | – | 12 | 12 | 10 | SMT | ||
| 7447709151 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PD SMT Power Inductor | – | – | – | – | – | – | -40 °C up to +125 °C | – | – | 2.6 | 3.5 | 1210 | Standard | 2.7 | 3.3 | 2.1 | 2.1 | 0.15 | 200 | – | – | – | 12 | 12 | 10 | SMT | ||
 | 74437321010 | 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-LHMI SMT Power Inductor | – | – | – | – | – | – | – | – | – | 4.5 | 90 | 4012 | – | 5.65 | 10 | 4 | – | 0.001 | 47 | – | – | – | 4.45 | 4.06 | 1 | SMT |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 890324022017CS | SPEC | |
| 744821240 | SPEC | |
| 7447709680 | SPEC | |
| 7447709151 | SPEC | |
| 74437321010 | 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. |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Application | C | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | Packaging | IRP,40K (A) | fres (MHz) | Size | Version | ISAT,10% (A) | ISAT,30% (A) | IR,40K (A) | IR (A) | L (mH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples |
|---|