HV9606DB1 Datasheet, PDF (1/4 Pages) Supertex, Inc – Current-Mode PWM Multiple Output Flyback Converter

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
V_in = 48V
Stop when Vin ≤ 19V
I_Outmax:= 106mA
I_Outmax:= 30mA
I_Outmax:= 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: [phone] FAX: [phone] www.supertex.com