HV9906DB2 データシートの表示（PDF） - Supertex Inc
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HV9906DB2 Datasheet PDF : 4 Pages
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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
C2
.1
R1
22
M1
IRFR320
Q1
MMBT2907
D7
MURS120
NEG
LED1
LED
R4
976K
R5
12.1K
1 DUT 8
6
2
3
HV9906 5
4
7
C6
10uF
R6
121K C5
R7
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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