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Texas Instruments UCC28730 | Demoboard PMP41063
300-V-1,000V input 48-W isolated auxiliary power reference design with low standby power
Overview
| Topology | Flyback Converter |
| Input voltage | 300-1000 V |
| Output 1 | 12 V / 4 A |
| IC revision | 001 |
Description
This reference design provides an isolated 12-V, 48-W output power conversion with cascaded flyback topology. The power supply can be powered from the 300-V to 1,000-V direct current (DC) input. This design uses valley switching flyback controller UCC28730 to achieve less than 70-mW low standby power consumption at 1,000-V input voltage to extend the battery lifetime.
Features
- Wide input-voltage range from 300-V to 1,000-V input voltage
- Less than 70-mW no-load power consumption at 1,000-V input voltage
- Primary-side regulation design (no optocoupler) extend product lifetime
- Minimized output undershoot and overshoot during load transient
- Uniform start-up time across input voltage range
- 86.14% efficiency at 1,000-V input and 48-W output
Typical applications
- 300V-1000V input 48-W isolated auxiliary power
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | Size | Operating Temperature | Q(%) | RISO | Ceramic Type | Fl(mm) | Packaging | IRP,40K(A) | ISAT(A) | fres(MHz) | Version | IR(A) | L(mH) | RDC max.(mΩ) | VR(V (DC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 25 V(DC), 4.7 pF, ±0.5pF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | Capacitance4.7 pF | Capacitance±0.5pF | Size0603 | Operating Temperature -55 °C up to +125 °C | Q-Factor494 % | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | Rated Voltage25 V (DC) | – | – | Length1.6 mm | Width0.8 mm | Height0.8 mm | – | |||||
 | WE-CMB Common Mode Power Line Choke, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMB Common Mode Power Line Choke | – | – | SizeXS | Operating Temperature -40 °C up to +125 °C | – | – | – | – | – | – | – | – | VersionTHT | Rated Current2 A | Inductance1 mH | DC Resistance45 mΩ | Rated Voltage250 V (DC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length15 mm | Width7.8 mm | Height18 mm | MountTHT | ||||
| WE-CMB Common Mode Power Line Choke, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMB Common Mode Power Line Choke | – | – | SizeXS | Operating Temperature -40 °C up to +125 °C | – | – | – | – | – | – | – | – | VersionTHT | Rated Current0.7 A | Inductance10 mH | DC Resistance350 mΩ | Rated Voltage250 V (DC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length15 mm | Width7.5 mm | Height18 mm | MountTHT | ||||
 | WE-PD SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | – | – | Size7345 | Operating Temperature -40 °C up to +125 °C | – | – | – | – | – | Performance Rated Current8.6 A | Saturation Current10.2 A | Self Resonant Frequency100 MHz | VersionStandard | Rated Current6.84 A | Inductance0.001 mH | DC Resistance10 mΩ | – | – | – | Length7.3 mm | Width7.3 mm | Height4.5 mm | MountSMT | ||||
750345387 | Flyback Transformer, –, – | Simulation– | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Flyback Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |