Reference Designs
Snubberless: Non-Isolated AC/DC Flyback Converter Reference Design with Simplified Transformer
Texas Instruments
TIDA-00628 is a 15V/6.5W non-isolated: single output: AC/DC Flyback power supply that is capable of operating from wide input voltage ranging from 85Vac to 440Vac. This design demonstrates 2 key features (1) the elimination of snubber components enabled by use of a high-voltage bipolar transistor and (2) simplified transformer design with no need for an auxilliary winding. Low system parts count and built in advanced protection features result in a cost-effective solution for electricity meters and industrial designs.
Features
- Input voltage up to 440Vrms: 15V/6.5W outputNo snubber - reduces BoM count and PCB areaBJT switch to reduce system costNon Isolated output allows simplified transformer with no auxilliary windingTypical efficiency of 80% at 230V: 6.5WCompliant with Conducted Emissions: CISPR 22: Class B
Applications
- Electricity meter
- AC-input BLDC motor drive
- Data concentrators
- Power quality analyzer
- Force & torque sensor
- Circuit breaker (ACB
- MCCB
- VCB)
- Power quality meter
- Smart electrical panel
Product Categories
- Power management
End Equipment Reference Diagrams
Application Area
End Equipment
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