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HV9906DB4

Supertex Inc
Part Number HV9906DB4
Manufacturer Supertex Inc
Description Off-Line Current Source Controller
Published Mar 26, 2005
Detailed Description HV9906DB4 Off-Line Current Source Controller Introduction The HV9906DB4 provides a constant current of 750mA. It contai...
Datasheet PDF File HV9906DB4 PDF File

HV9906DB4
HV9906DB4

Overview
HV9906DB4 Off-Line Current Source Controller Introduction The HV9906DB4 provides a constant current of 750mA.
It contains all circuitry necessary to demonstrate the features of the HV9906 second order power supply controller.
A power converter of the demo board consists of an input buck-boost stage and an output buck stage.
The output voltage polarity is negative.
Due to its unique quadratic input-tooutput DC voltage transfer ratio, the converter can operate directly off AC line to produce low-voltage output without need for electrolytic capacitors.
The HV9906 is designed for optimally controlling this type of power converter or other types of two-stage multiconverters.
The board is optimized for driving a 10V-20V, 750mA load.
However, it may be modified to meet custom requirements (up to 80V or 1.
5A).
HV9906DB4 demo board features passive power factor correction to PF>0.
95, open circuit protection and under voltage lockout.
Specification Input Voltage Output Current Output Voltage Efficiency 80 to 135VAC, 60Hz 750mA ±10% 20V Max 64% at Io=750mA, Vin=100VAC Board Layout and Connections TOP SIDE BOTTOM SIDE 80-135 VAC Radj (external) 80-135 VAC Radj (external) WARNING!!! Do not connect to scope ground or to the ground of other earth-grounded instruments.
Doing so will short the AC line, resulting in damage to the circuit and/or instruments.
Either use an isolation transformer on the AC line, use a differential probe, or use a floating, battery-powered instrument to make measurements.
WARNING!!! No galvanic isolation.
Dangerous voltages are present when connected to the AC mains.
1 07/23/2002 Supertex, Inc.
1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.
supertex.
com HV9906DB4 Instructions OUT, RTN Connect your LED to these terminals: negative to OUT, positive to RTN.
E1, E2 Connect 80 to 135VAC, 60Hz line source to these terminals: line to E2, neutral to E1.
The input is protected with a 0.
5A fuse.
DC, AGND Leave DC, AGND...


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