DN91, Synchronous Rectification Improves Set Top Box Power Supply Efficiency
Using Part
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Documents connexes
Pour les produits finaux
- Set-Top Box
Description
- Flyback converter with synchronous rectification on 5V and 3.3V output. Synchronous rectification improves set top box power supply efficiency. The note concludes with practical measurement on a 27W four-output set top box power supply to demonstrate that a 3% efficiency improvement over a Schottky solution can be achieved with the aid of the ZXGD3101 synchronous MOSFET controller
Caractéristiques principales
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Conversion TypeAC to DC
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Input Voltage230 (AC) V
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Output Voltage3.3|5|12 V
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Output Current0.5@12V|2@3.3V|2.5@5V A
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Output Power27 W
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Efficiency78.2 %
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TopologyFlyback
Pièces en vedette (5)
| Pièce numéro | Fabricant | Type | Description | |||
|---|---|---|---|---|---|---|
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ZTL431BQFTA | Diodes Incorporated | Voltage References | V-Ref Adjustable 2.5V to 20V 100mA Automotive AEC-Q100 3-Pin SOT-23 T/R | Ajouter au panier | |
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ZTL431AQFTA | Diodes Incorporated | Voltage References | V-Ref Adjustable 2.5V to 20V 100mA Automotive AEC-Q100 3-Pin SOT-23 T/R | Ajouter au panier | |
| ZTL431BQE5TA | Diodes Incorporated | Voltage References | V-Ref Adjustable 2.5V to 20V 100mA Automotive AEC-Q100 5-Pin SOT-25 T/R | Ajouter au panier | ||
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ZXGD3101T8 | Diodes Incorporated | Gate and Power Drivers | Driver 3A 1-OUT High Side/Low Side Inv 8-Pin SM | Ajouter au panier | |
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ZXGD3101N8TC | Diodes Incorporated | Gate and Power Drivers | Driver 2.5A 1-OUT High Side/Low Side 8-Pin SO T/R | Ajouter au panier | |