DN91, Synchronous Rectification Improves Set Top-Box Power Supply Efficiency
Referenzdesign unter Verwendung des Teils ZTL431 von Diodes Incorporated
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Für Endprodukte
- Set-Top Box
Beschreibung
- Typical set top box power supply. It is a cost effective design with minimum component count. The circuit is designed to operate in Discontinuous Conduction Mode because there are lower switching losses. Furthermore, the flyback transformer size can be reduced owing to the lower average energy storage whilst its smaller magnetizing inductance also yields a better transient line/load response
Haupteigenschaften
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Conversion TypeAC to DC
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Input Voltage230 (AC) V
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Output Voltage-20|3.3|5|12 V
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Output Current0.06@-20V|0.5@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
Empfohlene Bauteile (3)
| Teilenummer | Hersteller | Typ | Beschreibung | |||
|---|---|---|---|---|---|---|
| ZTL431BQE5TA | Diodes Incorporated | Voltage References | V-Ref Adjustable 2.5V to 20V 100mA Automotive AEC-Q100 5-Pin SOT-25 T/R | In den Warenkorb | ||
|
ZTL431BQFTA | Diodes Incorporated | Voltage References | V-Ref Adjustable 2.5V to 20V 100mA Automotive AEC-Q100 3-Pin SOT-23 T/R | In den Warenkorb | |
|
ZTL431AQFTA | Diodes Incorporated | Voltage References | V-Ref Adjustable 2.5V to 20V 100mA Automotive AEC-Q100 3-Pin SOT-23 T/R | In den Warenkorb | |