Source Controller. HV9906DB2 Datasheet

HV9906DB2 Controller. Datasheet pdf. Equivalent

Part HV9906DB2
Description Off-Line Current Source Controller
Feature HV9906DB2 Off-Line Current Source Controller Introduction The Supertex HV9906DB2 demo board contain.
Manufacture Supertex Inc
Datasheet
Download HV9906DB2 Datasheet



HV9906DB2
HV9906DB2
Off-Line Current Source Controller
Introduction
The Supertex HV9906DB2 demo board contains all
circuitry necessary to demonstrate the features of the
HV9906 second order power supply controller. The
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. HV9906 is designed for
optimal controlling this type of power converter or
other types of two-stage multi-converters.
Board Layout and Connections
The board is optimized for driving a 6V 400mA
(700mA max.) LED. However, it may be modified to
meet custom requirements.
Specification
Input Voltage
80 to 135VAC, 60Hz
Output Current
400mA ±10% (700mA max.)
Output Voltage
10V max.
Efficiency
62% at Io=500mA, 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 07/23/02
Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.supertex.com



HV9906DB2
HV9906DB2
Instructions
NEG, RTN
Connect your LED to these terminals: negative to
NEG, positive to RTN.
E1, E2
Connect 80 to 135VAC, 60Hz line source to these
terminals: line to E1, neutral to E2. The input is
protected with a 0.5A fuse. IMPORTANT: Make sure
that your LED is connected to NEG and RTN
terminals. There is no open circuit protection
available in this demo board. Contact Supertex, Inc.
for the application circuit if protection is required.
GND
This is circuit common.
Note that since galvanic isolation is not provided,
connecting this point to an earth-grounded instrument
(such as an oscilloscope) will short the AC line,
resulting in circuit and/or instrument damage.
Also note that GND may be at higher potential with
respect to earth ground, even if the AC is switched
off. Use caution!
Do not connect to earth-ground.
Setting Output Current
Output current is preset to 400mA for this board.
Output current can be re-programmed according to
the following equation:
Iout
=
R6 R7
R7 R3
1V
The average output current will come out 5-10%
smaller due to power transfer interruptions during the
AC line voltage cusps.
Schematic Diagram
B1
D1 D2
F1
E1 1/2A
E2
DFS04
D3 D4
D5 D6 L3
MURS160
0.033
L2
MURS120
C3
100uH
100uH
.1 C2 R1
22
M1
IRFR320
Q1
MMBT2907
D7
MURS120
NEG
LED1
LED
R4
976K
R5
12.1K
1 DUT 8
2
HV9906
6
3
5
47
C6
10uF
R6
121K
R7
C5
0.1
100K
RTN
R3
.47
2 GND 07/23/02
Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.supertex.com







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