SUPERTEX HV9906DB4

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.
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
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).
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
Resistor Radj can change the output current. The
output current is:
Connect your LED to these terminals: negative to
OUT, positive to RTN.
Iout =
E1, E2
R1 + R 6 + R8 − R 7 //( R11 + Radj )
R 7 //( R11 + Radj ) ⋅ R3
⋅ 1V
Setting Output Current (without Dimmer Control)
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.
Output current is preset to 750mA for this board.
Output current can be re-programmed according to
the following equation:
DC, AGND
Leave DC, AGND open if dimmer control is not
required. Connect DC and AGND with an adjustable
Iout =
R1 + R 6 + R8 − R 7
⋅1V
R 7 ⋅ R3
Schematic Diagram
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
HV9906DB4
Parts List
Item
REF
Part
Package
Manufacturer
1
B1
Diode Bridge
2
C1
0.033 uFd, 250V, 10% SMD1913
Panasonic Pen Film
ECW-U2333KC9
3
C2
0.22uFd, 250V, 10%
SMD2825
Panasonic Pen Film
ECW-U2224KCV
4
C3
0.082 uFd, 100V, 10% SMD1913
Panasonic Pen Film
ECW-U2333KC9
5
C4
0.022uFd, 50V, 5%
SMD1210
Panasonic PPS Film
ECH-U1H223JB5
6
C5
0.1uFd, 16V, 5%
SMD1210
Panasonic PPS Film
ECH-U1C104JB5
7
C5A
0.1uFd, 16V, 5%
SMD1210
Panasonic PPS Film
ECH-U1C104JB5
8
C6
15uFd, 16V, Tantalum SMD3528
Kemet or equivalent
ECS-TICX156R
9
C7
0.01uFd, 50V
SMD0805
Panasonic or equivalent
ECJ-2VB1H103K
10
C8
0.1uFd, 16V, 5%
SMD1210
Panasonic PPS Film
ECH-U1C104JB5
11
C8A
0.1uFd, 16V, 5%
SMD1210
Panasonic PPS Film
ECH-U1C104JB5
12
C9
1500pFd, X7R, 50V
SMD0603
Panasonic or equivalent
ECJ-1VB1H152K
13
D1
Ultra Fast, 400V, 1A
SMB
On Semi or equivalent
MURS140T3
14
D2
Ultra Fast, 400V, 1A
SMB
On Semi or equivalent
MURS140T3
15
D3
Ultra Fast, 200V, 1A
SMB
On Semi or equivalent
MURS120T3
16
D4
1N4148
SOD123
On Semi or equivalent
1N4148
17
D5
Zener, 4.7V
SMD DL-35
Diodes Inc. or equivalent ZMM5230B-7
18
19
D6
F1
TVS, 1.5KW 54V
1/2A, Slow Blow
SMC
SMD2410
Diodes Inc. or equivalent SMCJ54A-13
Littlefuse
R452.500
20
L1
100uH
PM5022
J.W. Miller or Coilcraft
PM5022-101M
21
L2
100uH
PM5022
J.W. Miller or Coilcraft
PM5022-101M
22
M1
MOSFET, 400V
D2-Pak
International Rectifier
IRF730AS
23
M2
MOSFET, 350V
SOT-89
Supertex
DN3535N8
24
Q1
BJT, PNP
SOT23
On Semi or equivalent
FMMT2907
25
R1
15K ohm, 1%
SMD0805
Panasonic or equivalent
26
R2
1.0M Ohm, 1%
SMD0805
Panasonic or equivalent
27
R3
0.47 ohm, 1%
SMD1206
Panasonic or equivalent
28
R4
10.0M Ohm, 1%
SMD0805
Panasonic or equivalent
29
R5
84.6K ohm, 1%
SMD0805
Panasonic or equivalent
30
R6
105K ohm, 1%
SMD0805
Panasonic or equivalent
31
R7
100K ohm, 1%
SMD0805
Panasonic or equivalent
32
R8
15K ohm, 1%
SMD0805
Panasonic or equivalent
33
R9
1.4M Ohm, 1%
SMD0805
Panasonic or equivalent
34
R10
10.0 Ohm, 1%
SMD0805
Panasonic or equivalent
35
R11
100K Ohm, 1%
SMD0805
Panasonic or equivalent
36
Rth
0 Ohm
SMD0805
Panasonic or equivalent
37
U1
PWM/PFM IC
SOIC8
Supertex, Inc.
BRIDGE-RH06 Diodes Incorporated
Part No.
RH06 or HD06
HV9906
3
Rev. A
07/23/2002
Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.supertex.com