Flyback Converter. HV9606DB1 Datasheet

HV9606DB1 Converter. Datasheet pdf. Equivalent

Part HV9606DB1
Description Current-Mode PWM Multiple Output Flyback Converter
Feature HV9606DB1 Current-Mode PWM Multiple Output Flyback Converter Introduction The Supertex HV9606DB1 ev.
Manufacture Supertex Inc
Datasheet
Download HV9606DB1 Datasheet




HV9606DB1
HV9606DB1
Current-Mode PWM Multiple Output Flyback Converter
Introduction
The Supertex HV9606DB1 evaluation board demonstrates the features of HV9606 IC by presenting a DC/DC
converter employing flyback technique to achieve multiple outputs:
3.3V non-isolated output with ± 1% accuracy. The output power is 350mW.
5V isolated output with ± 5% accuracy. The output power is 150mW.
40V nominal isolated output. The output power is 500mW.
The HV9606 current-mode PWM controller features a built-in start-up regulator that can be used to operate the IC
from inputs of 15V to 250V. Other features include built-in soft start, programmable input under voltage lockout and
hysteresis, and standby current of 6µA (below UVLO).
Specifications
Total Output Power
Efficiency
Input Voltage Range
Input Voltage Lockout
Switching Frequency
3.3V Output
5V Output
40V Isolated Output
Remote On/Off
Remote Power Good Indicator
1 Watt
70
20V to 100V
Start when Vin 21V
25kHz
3.3V ± 1%
5.0V ± 5%
40.0V (nominal)
Yes
Yes
Vin = 48V
Stop when Vin 19V
IOutmax:= 106mA
IOutmax:= 30mA
IOutmax:= 12.5mA
all outputs at 50% Load
350mW Output Power
150mW Output Power
500mW Output Power
Board Layout and Connections
Measurement TP's
PWRGD
Vout=3.3V
RLOAD
Vout=5.0V
RLOAD
Vout=40V
RLOAD
-+
VIN = 20V to 100 V
U1 = HV9606
TX1 = EPCOS Transformer
1 09/05/2002
Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.supertex.com



HV9606DB1
Instructions
Vin , GND
Connect 21 to 100V power source to these terminals:
positive to Vin , negative to GND.
3.3VREG, GND
Connect your load to these terminals. This is a
regulated 3.3V output. This output can typically
deliver a current up to 106mA.
5.0VREG, GND
Connect your load to these terminals. This is a 5.0V
output. This output can typically deliver a current up
to 30mA.
Schematic Diagram
HV9606DB1
JOUT+, JOUT-
Connect your load to these terminals. This is an
isolated 40.0V output. This output can typically
deliver a current up to 12.5mA.
ON/OFF
This is a remote inhibit pin. Connecting this pin to
GND will disable the converter. The converter will
resume operation beginning with soft start as the
ON/OFF pin is released.
PWRGD
This is an active "High", remote power-good
indicator. This pin is utilized with CMOS coupled logic
of 3.3V for "High" and 0V for "Low".
EXT SYNC
Apply external clock, a 3.3 volt logic signal to Ext
Sync. Clock frequency has to exceed 25kHz to sync,
but not exceed 50kHz.
Vin
Cin2
33uF, 450V
VDD
R12
1K
Ext Sync
M3
10k
R16
STOP
To S ync Pin
START
2N7000
R5+ R4
12.2M
R6+ R2
2.0M
R7+ R3
5.7M
D1
+
SK15
C3
4700uF
1nF
C4
VOUT3 (Isolated)
C5
1nF
D4
DL4002
3
+
Cout
100uF
1
TX1 9
W4 8
12
W3 11
W1
W2 10
VDD
3.3nF 1nF C9
C10
Sync
C1
4.7uF
SS
1
2
3
4
5
6
7
8
9
10
STATUS
20
19
18
17
16
15
14
13
12
11
HV9606
CREF
1uF
D2
SK15
+
C2
4700uF
Q1
M1
TN2524
10
1nF
C8
CS
R17
26.1K SENSE
FB
C7
330pF
3.3nF
R9
62.4K
R10
2.61K
R11
35K
R1
100k
C6 10nF CCA
CB
Rsense
1
GATE
100nF
CVX2
Ref COMP VX2
5.0V
3.3VRE
GND
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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