STEVAL-ISA029V1 [STMICROELECTRONICS]
Compact power supply for DVD/set top box evaluation board with three Vout (-30 V, 3.3 V, 12 V); 三Vout来DVD /机顶盒评估板紧凑型电源（ -30 V， 3.3 V ， 12 V）
| 型号： | STEVAL-ISA029V1 |
| 厂家： | 
ST |
| 描述： | Compact power supply for DVD/set top box evaluation board with three Vout (-30 V, 3.3 V, 12 V) |
| 文件： | 总4页 (文件大小：100K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
STEVAL-ISA029V1
Compact power supply for DVD/set top box evaluation board
with three Vout (-30 V, +3.3 V, +12 V)
Data Brief
Features
■ Input voltage range 85 V – 300 V
AC
AC
■ V
= 12 V ( 5%)
= 1 A
OUT1
■ I
OUT1
■ V
= 3.3 V ( 2%)
= 100 mA
OUT2
■ I
OUT2
■ V
= -24 V ( 10%)
= 40 mA
OUT3
■ I
OUT3
■ Safety EN60950 compliant
■ EMI - conducted EN55022-B compliant
STEVAL-ISA029V1
Description
The STEVAL-ISA029V1 evaluation board is an
isolated triple-output flyback converter, suitable for
wide-range input voltage operation. The converter
is based on the smart power VIPer53-E, which
integrates, in the same package, an enhanced
current-mode PWM controller with a high-voltage
MDmesh™ Power MOSFET. The switching
frequency is set to 60 kHz by means of an
external RC network connected to a dedicated pin
on the IC. The closed loop regulation is performed
on the 12 V output using an optocoupler, which
drives the COMP pin of the VIPer. The 3.3 V
output is post regulated using a non-integrated
low drop linear voltage regulator to achieve the
required accuracy. The negative 24 V output is
achieved by means of a discrete linear voltage
regulator, made up of a Zener diode, a resistor
and a PNP transistor.
December 2007
Rev 1
1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Board schematic
STEVAL-ISA029V1
1
Board schematic
Figure 1.
Schematic
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STEVAL-ISA029V1
Revision history
2
Revision history
Table 1.
Date
06-Dec-2007
Document revision history
Revision
Changes
1
Initial release.
3/4
STEVAL-ISA029V1
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