参数资料
| 型号： | CS5157HGDR16G |
| 厂商： | ON Semiconductor |
| 文件页数： | 13/16页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR BUCK SYNC 5BIT 16-SOIC |
| 产品变化通告： | Product Obsolescence 24/Jan/2011 |
| 标准包装： | 1 |
| 应用： | 控制器，Intel Pentium? II |
| 输入电压： | 4.25 V ~ 20 V |
| 输出数： | 2 |
| 输出电压： | 1.3 V ~ 2.05 V，2.1 V ~ 3.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 剪切带 (CT) |
| 其它名称： | CS5157HGDR16GOSCT |
CS5157H
A heatsink may be added to TO?220 components to
reduce their thermal impedance. A number of PC board
layout techniques such as thermal vias and additional copper
foil area can be used to improve the power handling
capability of surface mount components.
EMI Management
As a consequence of large currents being turned on and off
at high frequency, switching regulators generate noise as a
consequence of their normal operation. When designing for
compliance with EMI/EMC regulations, additional
components may be added to reduce noise emissions. These
components are not required for regulator operation and
experimental results may allow them to be eliminated. The
input filter inductor may not be required because bulk filter and
bypass capacitors, as well as other loads located on the board
will tend to reduce regulator di/dt effects on the circuit board
and input power supply. Placement of the power component to
minimize routing distance will also help to reduce emissions.
Layout Guidelines
1. Place 12 V filter capacitor next to the IC and connect
capacitor ground to pin 11 (PGND).
2. Connect pin 11 (PGND) with a separate trace to the
ground terminals of the 5.0 V input capacitors.
3. Place fast feedback filter capacitor next to pin 8 (V FFB )
and connect it’s ground terminal with a separate, wide
trace directly to pin 14 (LGND).
4. Connect the ground terminals of the Compensation
capacitor directly to the ground of the fast feedback
filter capacitor to prevent common mode noise from
effecting the PWM comparator.
5. Place the output filter capacitor(s) as close to the load
as possible and connect the ground terminal to pin 14
(LGND).
6. Connect the V FB pin directly to the load with a separate
trace (remote sense).
7. Place 5.0 V input capacitors close to the switching
MOSFET and synchronous MOSFET.
Route gate drive signals V GATE(H) (pin 10) and V GATE(L)
(pin 12 when used) with traces that are a minimum of 0.025
inches wide.
2.0 m H
33 W
1000 pF
1.0 m F
V CC
0.1 m F
15
To the negative terminal
of the input capacitors
11
V COMP
Figure 20. Filter Components
2.0 m H
+
Soft?Start
5
8
100 pF
V FFB
1200 pF × 3.0/16 V
OFF TIME
Figure 21. Input Filter
http://onsemi.com
13
To the negative terminal of the output capacitors
Figure 22. Layout Guidelines
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CS-5158D16 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Mode SMPS Controller |
| CS-5158DR16 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Mode SMPS Controller |
| CS-516003 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Attenuator |
| CS5160GD | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CS5160GD16 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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