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参数资料
| 型号： | DCW1042 |
| 元件分类： | 电源模块 |
| 英文描述： | DC-DC REG PWR SUPPLY MODULE |
| 封装： | PLASTIC, SIP-7/8 |
| 文件页数： | 4/8页 |
| 文件大小： | 245K |
| 代理商： | DCW1042 |
4
Test Configurations
Input Reflected-Ripple Current Test Setup
+Out
-Out
+Vin
-Vin
DC / DC
Converter
Load
Battery
+
Lin
+
Cin
To Oscilloscope
Current
Probe
Input reflected-ripple current is measured with a
inductor Lin (4.7uH) and Cin (220uF, ESR < 1.0 at
100 KHz) to simulate source impedance. Capacitor Cin
is to offset possible battery impedance. Current ripple
is measured at the input terminals of the module and
measurement bandwidth is 0-500 KHz.
Peak-to-Peak Output Noise Measurement
Scope measurement should be made by using a BNC
socket, measurement bandwidth is 0-20 MHz. Position
the load between 50 mm and 75 mm from the DC/DC
Converter. A Cout of 0.47uF ceramic capacitor is
placed between the terminals shown below.
+Out
-Out
+Vin
-Vin
Single Output
DC / DC
Converter
Resistive
Load
Scope
Copper Strip
Cout
Design & Feature Considerations
The DCW1000 circuit block diagrams are shown in
Figures 3.
PFM
Isolation
Ref.Amp
LC
Filter
+Vin
-Vin
-Vo
+Vo
Figure 3: Block diagram of DCW1000 single output modules.
Input Source Impedance
The power module should be connected to a low ac-
impedance input source. Highly inductive source
impedances can affect the stability of the power
module.
+
+Out
-Out
+Vin
-Vin
DC / DC
Converter
Load
DC Power
Source
+
-
Cin
In applications where power is supplied over long lines
and output loading is high, it may be necessary to use
a capacitor at the input to ensure startup.
Capacitor mounted close to the input of the power
module helps ensure stability of the unit, it is
recommended to use a good quality low Equivalent
Series Resistance (ESR < 1.0 at 100 KHz) capacitor
of a 8.2uF for the 5V input devices, a 3.3uF for the 12V
input devices, and a 1.5uF for the 24V and 48V
devices.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DCW12 | 制造商:MEANWELL 制造商全称:Mean Well Enterprises Co., Ltd. 功能描述:12W DC-DC Regulated Dual Output Converter |
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| DCW12/12D/500 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| DCW12/15/1500 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| DCW12/15D/400 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
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