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Texas Instruments UCC28730 | Demoboard PMP10407
Zero Standby PSR Flyback Controller with CVCC and Wake-Up Monitoring
Overview
| Topology | Flyback Converter |
| Input voltage | 85-265 V |
| Output 1 | 5 V / 10 A |
| IC revision | D |
Description
The UCC28730 isolated-flyback power supply controller provides Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler, and signal detection to improve transient response to large load steps. A minimum switching frequency of 30 Hz facilitates achieving less than 5 mW of no-load power. This device processes information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current. The monitoring works with a secondary-side alarm device such as the UCC24650 to deliver rapid response to heavy load steps using minimal output capacitance.
Features
Remark: BOM is added with main pdf.
Enables (<5 mW) Standby ConsumptionSmart Detection Enables Smallest Output CapacitancePrimary-Side Regulation (PSR) Eliminates Opto-coupler±5% Voltage Regulation and Current Regulation Across Line and Load700-V Start-up Switch83-kHz Maximum Switching Frequency Enables Low Stand-by Power Charger DesignsResonant-Ring Valley-Switching Operation for Highest Overall EfficiencyFrequency-Dither to Ease EMI ComplianceClamped Gate-Drive Output for MOSFETOver-Voltage, Low-Line, and Over-Current Protection FunctionsProgrammable Cable CompensationSOIC-7 Package
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | IR(A) | L(µH) | RDC max.(mΩ) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCI SMT Flat Wire High Current Inductor, 19.6 A, 6 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Performance Rated Current19.6 A | Saturation Current @ 10%6 A | Saturation Current @ 30%13 A | DC Resistance3.15 mΩ | Self Resonant Frequency135 MHz | – | Inductance1.1 µH | DC Resistance3.465 mΩ | – | – | MaterialSuperflux | Length7 mm | Width6.9 mm | Height4.8 mm | MountSMT | ||||
 | WE-CMB Common Mode Power Line Choke, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMB Common Mode Power Line Choke | – | – | – | – | – | Rated Current1 A | Inductance10000 µH | DC Resistance360 mΩ | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length17.5 mm | Width13 mm | Height22 mm | MountTHT |