PMP7672 Reference Design

Texas Instruments

18W Primary Side Regulated Flyback LED Driver for T8 Fixtures Reference Design

Description

This reference design describes an 18W power supply for driving a string of 13 LEDs (3.3V) at 420mA. The targeted application for this design is T8 fixtures transitioning from standard fluorescent tubes to more efficient LEDs. With an operating efficiency of over 87%: an input voltage range of 90 VAC - 275 VAC: and form factor of 282mm x 18mm: this design provides an ideal solution for this application. Test results provided in this design include EMI tests per CISPR22 Class B standard.

Features
  • Supports a wide input voltage range: 90VAC - 275VAC Unique form factor design is ideal for T8 fixtures (282mm x 18mm) Design has a operating efficiency of ≥87%: PFC over ≥95% at all conditions: and THD maintained to ≤18% Test results demonstrate this design's capability to pass CISPR22 Class B EMI test Test results demonstrate this design's capability to pass EFT and surge tests up to 4kV per IEC61000 standards
Applications
  • LED power supply
Product Categories
  • Power management

Parts

Part Number Name Companion Part
TL431 TL431 Datasheet
TPS92314 TPS92314 Buy Datasheet

Software

Bill Of Materials

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Schematic

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Test Data

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Other Documents

Title Updated Type Size (KB)
PMP7672 Gerber 10 Mar 2014 ZIP 61
PMP7672 BOM 10 Mar 2014 PDF 92
PMP7672 Schematic 10 Mar 2014 PDF 36