PMP2493.4, Buck Converter with Minimum Component Count to Drive LEDs (11.3V @ 400mA)
Referenzdesign unter Verwendung des Teils TPS40200D von Texas Instruments
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Beschreibung
- PMP2493.4, Buck Converter with Minimum Component Count to Drive LEDs (11.3V @ 400mA). TPS40200 controller can be used as a low-cost LED driver. With an input voltage rating of 4.5 to 52 V, it can power LED strings with regulated current and up to a 45 V drop across the string. Current is sensed across a resistor between the cathode of the string and ground and is compared against a 696 mV reference to provide regulated current. Because the driver is a buck and not a boost or flyback, an open string will not produce voltages above the input voltage and over-voltage protection is not needed. The driver can operate in either the continuous or discontinuous mode. for output voltages above 35 V the discontinuous mode is needed due to duty cycle limitation above 35 V. The circuit shown has a Pulse Width Modulator (PWM) input for dimming purposes. Targeted current can be set with jumpers
Haupteigenschaften
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Conversion TypeDC to DC
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Input Voltage43 to 47 V
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Output Voltage11.3 V
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Output Current0.4 A
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Output Power4.52 W
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TopologyBuck- Non Sync
Empfohlene Bauteile (6)
| Teilenummer | Hersteller | Typ | Beschreibung | |||
|---|---|---|---|---|---|---|
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TPS40200DR | Texas Instruments | DC to DC Controllers | DC/DC Cntrlr Single-OUT Step Down 500kHz 8-Pin SOIC T/R | In den Warenkorb | |
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TPS40200DRG4 | Texas Instruments | DC to DC Controllers | DC/DC Cntrlr Single-OUT Step Down 500kHz 8-Pin SOIC T/R | In den Warenkorb | |
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TPS40200D | Texas Instruments | DC to DC Controllers | DC/DC Cntrlr Single-OUT Step Down 500kHz 8-Pin SOIC Tube | In den Warenkorb | |
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TPS40200DG4 | Texas Instruments | DC to DC Controllers | DC/DC Cntrlr Single-OUT Step Down 500kHz 8-Pin SOIC Tube | In den Warenkorb | |
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TPS40200DRBT | Texas Instruments | DC to DC Controllers | DC/DC Cntrlr Single-OUT Step Down 500kHz 8-Pin VSON EP T/R | In den Warenkorb | |
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TPS40200DRBR | Texas Instruments | DC to DC Controllers | DC/DC Cntrlr Single-OUT Step Down 500kHz 8-Pin VSON EP T/R | In den Warenkorb | |