HV9931DB1 User Guide

Supertex inc.
HV9931DB1
LED Driver Demoboard
Input 120VAC // Output 350mA, 40V (14W)
General Description
The HV9931 LED driver is primarily targeted at low to
medium power LED lighting applications where galvanic
isolation of the LED string is not an essential requirement.
The driver provides near unity power factor and constant
current regulation using a two stage topology driven by
a single MOSFET and control IC. Triac dimming of this
design is possible with the addition of some components for
preloading and inrush current shaping.
featured are output current soft start and protections from
line overvoltage, load overvoltage and open circuit. The
driver is inherently short circuit proof by virtue of the peak
current regulation method.
Specifications
Input voltage:
100VRMS to 135VRMS, 60Hz
Output voltage:
0 to 40V
Output current:
350mA +/-5%
Output power:
14W, Max
Power factor
98%
Total harmonic distortion
EN61000-3-2 Class C
EMI limits
CISPR 15 (see text)
Efficiency
83%
Output current ripple
30%PP
The input EMI filter was designed to suppress the differential
mode switching noise to meet CISPR15 requirements.
No specific components were added to suppress currents
of common mode nature. Common mode current can be
controlled in many ways to satisfy CISPR 15 requirements.
Input overvoltage
protection
140VRMS, Latching
Output overvoltage
protection
43V, Latching
Switching frequency
73kHz
The board is fitted with a number of optional circuits; a
schematic of a simplified driver is given as well. The circuits
Dimensions:
3.5” x 3.0” x 1.25”
The DB1 and DB2 Demoboards were designed for a fixed
string current of 350mA and a string voltage of 40V for a load
power of about 14W. The boards will regulate current for an
output voltage down to 0V.
Nominal input voltage for the DB1 is 120VAC, for the DB2
230VAC. Design for universal input (85 to 265VAC) is by
all means possible but does increase cost and size while
lowering efficiency.
Board Layout and Connections
A
V
V
A
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HV9931DB1
Special Note:
The electrolytic capacitor carries a hazardous voltage for an
extended time after the board is disconnected. The board
includes a 1MΩ resistor placed across the electrolytic capacitor which will slowly discharge the capacitor after disconnection from line voltage. The voltage will fall more or
less exponentially to zero with a time constant of about 100
seconds. Check the capacitor voltage before handling the
board.
 Warning!
Working with this board can cause serious bodily harm or
death. Connecting the board to a source of line voltage will
result in the presence of hazardous voltage throughout the
system including the LED load.
The board should only be handled by persons well aware of
the dangers involved with working on live electrical equipment. Extreme care should be taken to protect against electric shock. Disconnect the board before attempting to make
any changes to the system configuration. Always work with
another person nearby who can offer assistance in case of
an emergency. Wear safety glasses for eye protection.
Connection Instructions
changes in line or load voltage but are otherwise constant
over the course of a line cycle. With the HV9931, OFF time is
fixed by design, being programmed by an external resistor,
whereas ON time adjusts to a more or less constant value,
being under control of the HV9931 peak current regulator.
Step 1.
Carefully inspect the board for shipping damage, loose
components, etc, before making connections.
Step 2.
Attach the board to the line and load as shown in the diagram.
Be sure to check for correct polarity when connecting the
LED string to avoid damage to the string. The board is short
circuit and open circuit proof. The LED string voltage can
be anything between zero and 40V, though performance will
suffer when the string voltage is substantially lower than the
target of 40V. See the typical performance graphs.
The input or buck-boost stage is designed for operation
in discontinuous conduction mode (DCM) throughout the
range of line and load voltage anticipated. This can be
accomplished by making the input inductor sufficiently small.
A well known property of the DCM buck-boost stage, when
operated with constant ON time and constant OFF time, is
that input current is proportional to input voltage, whether
in peak value or average value. This results in sinusoidal
input current when the input voltage is sinusoidal, thereby
giving unity power factor operation when operating from the
rectified AC line voltage.
Step 3.
Energize the mains supply. The board can be connected to
mains directly. Alternatively voltage can be raised gradually
from zero to full line voltage with the aid of an adjustable AC
supply such as a Variac or a programmable AC source.
Principles of Operation
When operated in the anticipated range of line and load
voltage, the MOSFET ON time will be under control of the
output stage current controller, which turns the MOSFET
off when sensing that the output inductor current has
reached the desired peak current level as programmed by
a resistive divider at the CS2 pin. Under certain abnormal
circumstances such as initial run-up and line undervoltage,
which both could lead to the draw of abnormally high line
current, ON time is further curtailed by the action of the CS1
comparator, which monitors the input stage inductor current
against a threshold. This threshold can be a simple DC level
or be shaped in time as is performed on the Demoboard. In
particular, when shaping the CS1 threshold with the shape of
the rectified AC line input voltage waveform, the line current
will be bounded by a more or less sinusoidal line current
envelope which results in sinusoidal input current for low line
and other abnormal conditions.
The HV9931 topology can be viewed as a series connection
of two basic power supply topologies, (1) a buck-boost
stage as first or input stage, for purpose of converting AC
line power into a source of DC power, commonly known as
the DC bus, having sufficient capacitive energy storage to
maintain the bus voltage more or less constant throughout
the AC line cycle, and (2) a buck stage as second or output
stage for powering the LED string, stepping down the DC
bus voltage to the LED string voltage in order to produce a
steady LED string current.
The output or buck stage is designed for operation in
continuous conduction mode (CCM), operating with about 20
to 30% inductor current ripple. This amount of ripple serves
the needs of the HV9931 peak current controller which relies
on a sloping inductor current for setting ON time, and is of an
acceptable level to high brightness LEDs. Duty cycle is more
or less constant throughout the line cycle as the DC bus
voltage and LED string voltage are more or less constant
as well. Duty cycle and bus voltage do adjust in response to
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The design exercise of an HV9931 LED driver revolves
around establishing component values for (1) the input and
2
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HV9931DB1
output stage inductors, (2) a value for the bus capacitor, and
(3) a value for switching cycle OFF time, which together
result in (1) acceptable current ripple at the output stage
(say 30%), (2) an acceptable bus voltage ripple (say 5%),
and (3) an input stage which maintains DCM operation over
the desired line and load voltage range.
design tool is available in Mathcad form, based on behavioral
simulation, which, allows components to be adjusted in an
iterative manner, starting from an initial guess. The tool allows
quick evaluation of nine standard test cases, exercising the
design over line voltage variation and tolerance variation of
three component parameters.
For a given HV9931 design, the bus voltage rises and falls
with like changes in line and load voltage. This is unlike a
two stage design having two transistors and control ICs,
where the bus voltage can be set independent of line and
load voltage variation. If the desired ranges of line and load
voltage are particularly large then the latter topology may be
preferable so as to avoid large variation in bus voltage.
Mathcad design data can be found at the end of this
document. The data tends to be in good agreement with the
actual Demoboard despite the omission of switching losses
in the model. For this design we can see that the calculated
efficiency is off by say 5 percent likely due underestimation
of switching losses and inductor core and winding losses.
The design of an HV9931 based LED driver is not further
discussed here, except for noting that a semi-automatic
The Demoboard can be simplified significantly. Below is a
schematic showing the essential elements of the driver.
A Simplified Version of the Design
Simplified Schematic Diagram
F11
250mA
AC2
L21
1mH
L11
1mH
C11
100nF
1
2
L31
560μH
E31
47μF
D31
STTH1L06A
C
BR11
RH06-T
R37
6.8kΩ
C21
100nF
D42
STTH102A
M31
SPA04N50C3
R51
196kΩ
ZOV
BZX84C43
1
R62
2.43kΩ
THROV
BT168GW
ANO
A
R61
180mΩ
C
ROV
10kΩ
CAT
C37
100pF
4
Optional Output
Overvoltage Protection
L41
3.3mH
D41
STTH1R06A
+
3
C12
100nF
AC1
D32
STTH1L06A
VIN
2
8
RT
GATE
IC51
CS1
R68
75kΩ
4
R71
680mΩ
R72
2.67kΩ
CS2
HV9931LG
GND
VDD
PWM
3
6
5
7
R73
75kΩ
A
C51
10µF
Contact Supertex Applications Engineering for guidance in
simplifying the design or for adding functions such as triac
dimmability.
versions, are popular for their ready availability and low cost.
Drum core styles have particularly simple construction and
can be wound for lowest cost without coil former (bobbin).
They may serve well during the development stage, but may
not be the best choice for final design. Keep these type of
inductors away form any metallic surface such as heatsinks,
PCB copper planes, metallic enclosures, and capacitors, as
these unshielded parts can create high eddy current losses
in these parts. For tightly packaged designs or where inductor losses are an issue, drum core style inductors are not
recommended.
Note on Inductors:
This board was fitted with standard (COTS) inductors. These
are not necessarily an optimal choice but present an expedient way to go when evaluating a design. Custom engineered
parts generally give better performance, particularly with respect to efficiency.
Drum core style inductors, whether in radial or axial leaded
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AC1
AC2
F11
250mA
4
R82
24.3kΩ
R83
1MΩ
R84
1MΩ
C12
100nF
Q82
MMBT2907A
MOV11 C11
275V
100nF
L11
1mH
C81
10nF
2
TVS11
SMAJ
440CA
1
R80
100kΩ
Q81
MMBT2222A
R81
10kΩ
3
1
REC
BR11
RH06-T
DN65
BAV99
C65
10µF
2
4
3
L21
1mH
L1D
R68
1MΩ
R88
10MΩ
R87
200kΩ
2
R37
6.8kΩ
IC51
Q84
MMBT2907A
VDD
6
3
C51
10µF
HV9931
VDD
ENA
R51
196kΩ
GATE
4
GATE
CS2
8
5
PWM
RT
D42
MMDB914
7
L41
3.3mH
R90
150kΩ
C72
100pF
R79
100Ω
D42
STTH102A
SN2
D79
MMBD914
D31
STTH1R06A
M31
SPA04N50C3
R31
1MΩ
+
E31
47μF
GND
CS1
VIN
1
IDD
R39
100Ω
C37
100pF
D31
STTH1L06A
R99
1kΩ
C62
100pF
R62
2.43kΩ
R86
100kΩ
Q83
MMBT2222A
R85
100kΩ
Z61
BZX84C7V5
R63
75kΩ
R64
634kΩ
R65
634kΩ
R61
180mΩ
RS1
C21
100nF
D37
STTH1L06A
L31
560μH
D32
STTH1L06A
R73
75kΩ
R72
2.67kΩ
R71
680mΩ
RS2
C41
10nF
Z90
BZX84C7V5
Z91
BZX84C47
GND2
GND1
ANO
CAT
HV9931DB1
Schematic Diagram
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HV9931DB1
Typical Characteristics
String Current [mA] vs. String Voltage [V]
1000
100
900
90
800
80
700
70
135VRMS
600
60
120VRMS
500
50
400
40
300
30
200
(100VRMS, 120VRMS, 135VRMS)
virtually the same
20
100VRMS
100
0
Efficiency [%] vs. String Voltage [V]
10
0
10
20
30
40
0
50
0
10
20
30
40
50
THD [%] vs. String Voltage [V]
PF [%] vs. String Voltage [V]
100
30
90
25
80
135VRMS
70
20
120VRMS
60
100VRMS
50
15
40
100VRMS
10
30
20
120VRMS
135VRMS
5
10
0
0
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10
20
30
40
0
50
5
0
10
20
30
40
50
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HV9931DB1
Typical Waveforms (1)
Line Voltage and Current at nominal load (350mA, 40V)
100VRMS
120VRMS
135VRMS
IAC
VAC
Line Voltage and Current at half load (350mA, 20V)
100VRMS
120VRMS
135VRMS
Output Current and Drain Voltage at nominal load (350mA, 40V)
ILED (Peak)
VDRAIN
ILED (Valley)
Output Current and Drain Voltage at half load (350mA, 20V)
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HV9931DB1
Typical Waveforms (2) (120VRMS, 40V, 350mA)
Drain Voltage and LED Current
400µs per div
40µs per div
4µs per div
ILED
350mAAVE
VDRAIN
Drain Voltage and Gate Voltage
4µs per div
40µs per div
40µs per div
VGATE
Turn-ON
Turn-OFF
Recovery of D42
Recovery of D41
VDRAIN
Drain Voltage and Current Sense Voltages of Stages 1 and 2
VRS1
VRS2
Recovery of D41
Recovery of D42
VDRAIN
Drain Voltage and Voltages at Test Points REC, SN3, SN2
VSN3
VREC
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VSN2
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HV9931DB1
Typical Waveforms (3) (120VRMS, 40V, 350mA)
Drain Voltage and Voltage at the Test Point L1D (3 points along the AC line cycle)
AT ~ 90°
AT ~ 30°
AT ~ 10°
Clamping action of D37
VDRAIN
VL1D
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HV9931DB1
EMI Signature
Board suspended about 3” above reference plane.
Limit Line:
CISPR 15 Quasi Peak (9kHz to 30MHz)
Detector:
Peak Hold
IF Bandwidth:9kHz
Shielding:
2 copper shields, surrounding the power section on top and bottom of the board, terminated at the source of the MOSFET.
Without shielding :
110dBµV
100dBµV
90
80
66
56
60
50dBµV
10kHz
100kHz
10MHz
1MHz
With shielding :
110dBµV
100dBµV
90
80
66
56
60
50dBµV
10kHz
100kHz
1MHz
The performance graphs above were obtained from the
board not having specific measures to suppress common
mode emissions, such as inclusion of a common mode inductor in the AC line input circuitry. The above graphs show
how shielding can significantly reduce emissions, particu-
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10MHz
larly in the upper frequency range. The shielding also was
instrumental in reducing the lower frequency emissions by
reducing magnetic field coupling from the main inductors
to the EMI filter inductors (EMI filter section kept outside of
shielded area).
9
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HV9931DB1
Mathcad Design Data
Corner
x
0
0
1
2
3
4
5
6
7
8
Corner
L1
µH
0
616
560
504
616
560
504
616
560
504
L1
-
-
-
-
RL1
mR
0
2000
2000
2000
2000
2000
2000
2000
2000
2000
RL1
-
-
-
-
L2
mH
0
3300
3300
3300
3300
3300
3300
3300
3300
3300
L2
-
-
-
-
RL2
mR
0
3000
3000
3000
3000
3000
3000
3000
3000
3000
RL2
-
-
-
-
ILRF2
%
0
32
32
32
32
32
32
32
32
32
ILRF2
-
-
-
-
C2
uF
0.0
37.6
47.0
56.4
37.6
47.0
56.4
37.6
47.0
56.4
C2
-
-
-
-
NF
x
0
2
2
2
2
2
2
2
2
2
NF
-
-
-
-
LF
µH
0
1000
1000
1000
1000
1000
1000
1000
1000
1000
LF
-
-
-
-
RLF
mR
0
2000
2000
2000
2000
2000
2000
2000
2000
2000
RLF
-
-
-
-
CF
nF
0
100
100
100
100
100
100
100
100
100
CF
-
-
-
-
C1
nF
0
100
100
100
100
100
100
100
100
100
C1
-
C2V
135
-
RS
mR
0
1000
1000
1000
1000
1000
1000
1000
1000
1000
RS
-
C2R
1345
-
VD
mV
0
1000
1000
1000
1000
1000
1000
1000
1000
1000
VD
-
-
-
-
TF
us
0.0
8.7
8.7
8.7
8.7
8.7
8.7
8.7
8.7
8.7
TF
-
-
-
-
RT
kR
0
196
196
196
196
196
196
196
196
196
RT
-
-
-
-
FM
Hz
0
50
50
50
50
60
50
50
50
50
FM
-
-
-
-
VMRMS
V
0
100
100
100
120
120
120
135
135
135
VMRMS
-
-
-
-
IMRMS
mA
0
167
160
153
137
133
130
122
118
115
IMRMS
130
137
115
167
IMMAX
mA
0
246
232
221
200
191
185
176
169
163
IMMAX
185
200
163
246
V3AVG
V
0
40
40
40
40
40
40
40
40
40
V3AVG
40
40
40
40
I3AVG
mA
0
361
350
335
361
350
339
361
350
339
I3AVG
339
361
335
361
PM
W
0.0
16.5
15.9
15.3
16.3
15.8
15.5
16.2
15.8
15.3
PM
15.5
16.3
15.3
16.5
P3
W
0.0
14.4
14.0
13.4
14.4
14.0
13.6
14.4
14.0
13.6
P3
13.6
14.4
13.4
14.4
EFF
%
0.0
87.5
88.0
87.8
88.7
88.5
87.7
88.9
88.7
88.3
EFF
87.7
88.7
87.5
88.9
PF
%
0.0
98.7
99.3
99.6
98.9
99.3
99.5
98.8
99.1
99.3
PF
98.9
99.5
98.7
99.6
THD
%
0.0
9.0
5.3
3.3
6.4
3.8
2.5
5.1
3.1
2.1
THD
2.5
6.4
2.1
9.0
H3
%
0.0
8.7
5.1
3.1
6.2
3.6
2.3
5.0
2.9
1.9
H3
2.3
6.2
1.9
8.7
H5
%
0.0
1.7
1.0
0.7
1.1
0.7
0.6
0.8
0.6
0.5
H5
0.6
1.1
0.5
1.7
TAMIN
µs
0.0
4.6
4.8
4.8
3.7
3.9
3.9
3.2
3.4
3.4
TAMIN
3.7
3.9
3.2
4.8
TAMAX
µs
0.0
5.8
5.4
5.2
4.3
4.2
4.2
3.7
3.6
3.6
TAMAX
4.2
4.3
3.6
5.8
TFMIN
µs
0.0
7.0
8.7
10.5
7.0
8.7
10.5
7.0
8.7
10.5
TFMIN
7.0
10.5
7.0
10.5
TFMAX
µs
0.0
7.0
8.7
10.5
7.0
8.7
10.5
7.0
8.7
10.5
TFMAX
7.0
10.5
7.0
10.5
DAMIN
%
0.0
39.6
35.5
31.6
34.7
30.8
27.4
31.8
28.0
24.7
DAMIN
27.4
34.7
24.7
39.6
DAMAX
%
0.0
45.3
38.4
33.1
38.3
32.6
28.4
34.5
29.4
25.5
DAMAX
28.4
38.3
25.5
45.3
DC1MAX
%
0.0
98.6
79.7
65.2
87.1
70.0
57.7
80.4
64.3
52.4
DC1MAX
57.7
87.1
52.4
98.6
FSMIN
kHz
0.0
78.4
70.6
63.9
88.4
77.3
68.4
93.9
81.0
71.2
FSMIN
68.4
88.4
63.9
93.9
FSMAX
kHz
0.0
86.5
74.0
65.4
93.6
79.4
69.4
97.8
82.6
71.9
FSMAX
69.4
93.6
65.4
97.8
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Mathcad Design Data (cont.)
Corner
x
0
0
1
2
3
4
5
6
7
8
Corner
IL1RMS
mA
0
428
426
423
383
384
388
359
361
363
IL1RMS
383
388
359
428
IL1MAX
mA
0
1121
1233
1345
1063
1184
1318
1036
1161
1291
IL1MAX
1063
1318
1036
1345
IL2RMS
mA
0
362
351
338
362
351
341
362
351
341
IL2RMS
341
362
338
362
IL2MAX
mA
0
406
406
406
406
406
406
406
406
406
IL2MAX
406
406
406
406
I2RMS
mA
0
389
367
345
356
337
322
337
319
304
I2RMS
322
356
304
389
V2MIN
V
0
94
110
127
111
130
149
123
144
166
V2MIN
111
149
94
166
V2MAX
V
0
107
119
134
122
137
154
133
151
171
V2MAX
122
154
107
171
V2RELPPR
%
0.0
13.1
7.9
4.8
9.7
5.8
3.7
8.1
4.8
3.0
V2RELPPR
4
10
3
13
ISRMS
mA
0
504
492
480
455
446
442
428
420
414
ISRMS
442
455
414
504
ISMAX
mA
0
1526
1639
1750
1469
1590
1723
1442
1567
1696
ISMAX
1469
1723
1442
1750
VSMAX
V
0
241
254
270
285
301
319
317
336
357
VSMAX
285
319
241
357
IDL1AVG
mA
0
300
271
245
253
229
211
228
206
188
IDL1AVG
211
253
188
300
IDF1AVG
mA
0
152
128
108
131
111
96
120
101
86
IDF1AVG
96
131
86
152
IDR2AVG
mA
0
152
129
108
131
111
94
119
100
85
IDR2AVG
94
131
85
152
IDF2AVG
mA
0
209
221
227
230
239
244
242
250
254
IDF2AVG
230
244
209
254
IRS1RMS
mA
0
295
303
310
260
270
282
242
252
262
IRS1RMS
260
282
242
310
IRS2RMS
mA
0
235
213
192
218
198
180
208
188
171
IRS2RMS
180
218
171
235
Doc.# DSDB-HV9931DB1
A032713
11
Supertex inc.
www.supertex.com
HV9931DB1
Simulated Waveforms (Mathcad)
Corner 0 (100VAC) (High Duty)
Corner 1 (100VAC) (Nom Duty)
Corner 2 (100VAC) (Low Duty)
Corner 3 (120VAC) (High Duty)
Corner 4 (120VAC) (Nom Duty)
Corner 5 (120VAC) (Low Duty)
Corner 6 (135VAC) (High Duty)
Corner 7 (135VAC) (Nom Duty)
Corner 8 (135VAC) (Low Duty)
Drain Voltage Envelope
Rectified Line Voltage
Bus Voltage
Input Inductor
Peak Current
Envelope
Line Voltage
Doc.# DSDB-HV9931DB1
A032713
Line Current
12
Supertex inc.
www.supertex.com
HV9931DB1
Bill of Materials
Qty
REF
Description
Manufacturer
Product Number
1
BR11
RECT BRIDGE GP MINIDIP 600V 0.5A
Diodes Inc
RH06-T
2
C62, C72
CAP CER NP0 50V 10% 0805 100PF
Kemet
C0805C101K5GACTU
2
C41, C81
CAP CER X7R 100V 10% 0805 10NF
Kemet
C0805C103K1RACTU
1
C37
CAP CER NP0 1000V 5% 0805 100PF
Vishay/Vitramon
VJ0805A101JXGAT5Z
2
C51, C65
CAP CER X7R 16V 10% 1206 10µF
Murata
GRM31CR71C106KAC7L
3
C11, C12, C21
CAP MKP 305VAC X2 125C 20% 100NF
EPCOS Inc
B32921C3104M
1
D42
DIODE ULTRAFAST 200V 1A SMA
STMicroelectronics
STTH102A
3
D31, D32, D37
DIODE FAST 600V 1A SMA
STMicroelectronics
STTH1L06A
1
D41
DIODE ULTRAFAST 600V 1A SMA
STMicroelectronics
STTH1R06A
2
D39, D79
DIODE ULTRAFAST HI COND SOT-23
Fairchild Semiconductor
MMBD914
1
DN65
DIODE SW DUAL 75V 350MW SOT23
Diodes Inc
BAV99-7-F
1
E31
CAP ALEL ED RAD12X20 200V 20% 47µF
Panasonic ECG
EEU-ED2D470
1
F11
FUSE SLOW IEC TR5 250MA
Littelfuse Wickmann
37202500411
0
HS
HEATSINK TO220 W/TAB W86 D40 H75 21K
Aavid Thermalloy
574502B03700G
1
IC51
IC HV9931 LED DRIVER 8L SOIC
Supertex
HV9931LG-G
2
L11, L21
CHOKE SH RAD13MM 15% 1.0MH 820MA
Sumida
RCP1317NP-102L
1
L31
CHOKE RAD 450D 710L 10% 560µH
Renco
RL-5480-4-560
1
L41
CHOKE RAD 625D 700L 10% 3.3MH
Renco
RL-5480-5-3300
1
M31
MOSFET N-CH 560V 4.5A 0.95R TO-220FP
Infineon Technologies
SPA04N50C3
1
MOV11
MOV 10MM 430VDC 2500A ZNR
Panasonic ECG
ERZ-V10D431
2
Q81, Q83
TRANSISTOR GP NPN SOT-23
Fairchild Semiconductor
MMBT2222A
2
Q82, Q84
TRANSISTOR GP PNP SOT-23
Fairchild Semiconductor
MMBT2907A
2
R90, R99
RES 1/8W 0805 1% 1.00KΩ
Panasonic ECG
ERJ-6ENF1001V
2
R39, R79
RES 1/8W 0805 1% 100Ω
Panasonic ECG
ERJ-6ENF1000V
1
R62
RES 1/8W 0805 1% 2.43KΩ
Panasonic ECG
ERJ-6ENF2431V
1
R72
RES 1/8W 0805 1% 2.67KΩ
Panasonic ECG
ERJ-6ENF2671V
1
R81
RES 1/8W 0805 1% 10.0KΩ
Panasonic ECG
ERJ-6ENF1002V
1
R82
RES 1/8W 0805 1% 24.3KΩ
Panasonic ECG
ERJ-6ENF2432V
1
R63, R73
RES 1/8W 0805 1% 75.0KΩ
Panasonic ECG
ERJ-6ENF7502V
2
R80, R85, R86
RES 1/8W 0805 1% 100KΩ
Panasonic ECG
ERJ-6ENF1003V
1
R90
RES 1/8W 0805 1% 150KΩ
Panasonic ECG
ERJ-6ENF1503V
1
R51
RES 1/8W 0805 1% 196KΩ
Panasonic ECG
ERJ-6ENF1963V
1
R87
RES 1/8W 0805 1% 200KΩ
Panasonic ECG
ERJ-6ENF2003V
2
R64, R65
RES 1/8W 0805 1% 634KΩ
Panasonic ECG
ERJ-6ENF6343V
Doc.# DSDB-HV9931DB1
A032713
13
Supertex inc.
www.supertex.com
HV9931DB1
Bill of Materials (cont.)
Qty
REF
Description
Manufacturer
Product Number
3
R68, R83, R84
RES 1/8W 0805 1% 1.0MΩ
Panasonic ECG
ERJ-6ENF1004V
1
R88
RES 1/8W 0805 1% 10.0MΩ
Vishay/Dale
CRCW080510M0FKEA
1
R37
RES 1/4W 1206 5% 6.8KΩ
Panasonic ECG
ERJ-8GEYJ682V
1
R31
RES 1/4W 1206 5% 1.0MΩ
Panasonic ECG
ERJ-8GEYJ105V
1
R61
RES 1/4W 0805 1% .18Ω
Susumu Co Ltd
RL1220S-R18-F
1
R71
RES 1/4W 0805 1% .68Ω
Susumu Co Ltd
RL1220S-R68-F
1
TVS11
DIODE TVS BIDIR SMA 400W 5% 440V
Littelfuse Inc
SMAJ440CA
2
Z61, Z90
DIODE ZENER 350MW SOT-23 7.5V
Diodes Inc
BZX84C7V5-7-F
1
Z91
DIODE ZENER 350MW SOT-23 47V
Diodes Inc
BZX84C47-7-F
Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives
an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liability
to the replacement of the devices determined defective due to workmanship. No responsibility is assumed for possible omissions and inaccuracies. Circuitry and
specifications are subject to change without notice. For the latest product specifications refer to the Supertex inc. (website: http//www.supertex.com)
Supertex inc.
©2013 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited.
Doc.# DSDB-HV9931DB1
A032713
14
1235 Bordeaux Drive, Sunnyvale, CA 94089
Tel: 408-222-8888
www.supertex.com