Source Controller. HV9906DB3 Datasheet

HV9906DB3 Controller. Datasheet pdf. Equivalent

Part HV9906DB3
Description Off-Line PFC Current Source Controller
Feature HV9906DB3 Off-Line PFC Current Source Controller Introduction The Supertex HV9906DB3 demo board is .
Manufacture Supertex Inc
Datasheet
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HV9906DB3 Off-Line PFC Current Source Controller Introducti HV9906DB3 Datasheet
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HV9906DB3
Off-Line PFC Current Source Controller
HV9906DB3
Introduction
The Supertex HV9906DB3 demo board is a power
factor corrected (PFC) LED driver using the HV9906
IC. 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 a power converter or
other types of two-stage multi-converters.
HV9906DB3 demo board features passive power
factor correction to PF>0.95. The board is optimized
for driving a 500mA (700mA max.) LED array.
(Forced cooling or encapsulation is required to
achieve an output current higher than 500mA.)
Board Layout and Connections
Features
Off-Line Transformerless Power Conversion
Power Factor Correction to PF>0.95
Soft Start
Low Inrush Current on Start
Specification
Input Voltage
80 to 135VAC, 47-63 Hz
or 100 to 200VDC
Output Current
500mA ±10% (700mA max.)
Output Voltage
10V max.
Power Factor
>0.95
Total AC Line Harmonic Distortion (THD) <15%
Efficiency
60% (Vo=10V, Io=0.5A, Vin=100VAC)
~
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 09/05/2002
Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.supertex.com



HV9906DB3
HV9906DB3
Instructions
OUT, RTN
Connect your LED to these terminals. Make sure that
it is connected in the polarity shown on the diagram
above.
E1, E2
Connect 80 to 135VAC line source to these
terminals. The input is fuse protected to 0.5A.
Schematic Diagram
Setting Output Current
Output current is preset to 500mA for this board.
Output current can be re-programmed by selecting
R3 according to the following equation:
I OUT
=
R6
+
R1 + R8
R7 R3
R7
1V
However, the board must be forced cooled or
encapsulated using thermally conductive encapsulant
to operate continuously at output current higher than
500mA.
B1
E2 F1
1/2A
C2
E1 .22uFd
D1
MURS140
L1
C1
.033uFd
100uH
R9
10
Q1
MMBT2907
D2
MURS120
C3
.082uFd
M1
IRFR320
L2
47uH
D3
MURS120
OUT
R4
10M
18
U1
26
D5
R5 1N4148 3 HV9906 5
C4&C4A
C7
0.2uFd
0.47uFd
90.9K
C6
47
R2
10K
15uFd
D7
30V
C9
0.01uF
R6 100K
R10
1M
C10
100pF
R7
100K
D6
4.7V
C11
1nF
D8
C4&C4A, C5&C5A, C8&C8A are two 0.1uF
capacitors in parallel.
LED
ARRAY
RTN
R1 R8
14.7K
14.7K
C5&C5A
0.2uFd
C8&C8A
0.2uFd
R3
0.47
2 09/05/2002
Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.supertex.com





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