Source Controller. HV9906DB4 Datasheet

HV9906DB4 Controller. Datasheet pdf. Equivalent

Part HV9906DB4
Description Off-Line Current Source Controller
Feature HV9906DB4 Off-Line Current Source Controller Introduction The HV9906DB4 provides a constant current.
Manufacture Supertex Inc
Datasheet
Download HV9906DB4 Datasheet




HV9906DB4
Off-Line Current Source Controller
HV9906DB4
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-to-
output 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 multi-
converters.
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
80 to 135VAC, 60Hz
Output Current
750mA ±10%
Output Voltage
20V Max
Efficiency
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 open if dimmer control is not
required. Connect DC and AGND with an adjustable
Schematic Diagram
HV9906DB4
Resistor Radj can change the output current. The
output current is:
Iout
=
R1 +
R6 + R8 R7 //(R11 +
R7 //(R11 + Radj ) R3
Radj )
1V
Setting Output Current (without Dimmer Control)
Output current is preset to 750mA for this board.
Output current can be re-programmed according to
the following equation:
Iout
=
R1+ R6 + R8
R7 R3
R7 1V
Radj
(external part)
2 07/23/2002
Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.supertex.com







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