参数资料
| 型号： | CS5157HGDR16G |
| 厂商： | ON Semiconductor |
| 文件页数： | 9/16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
M 1.00 m s
Trace 1? Regulator Output Voltage (10 mV/div.)
Trace 2? Inductor Switching Node (5.0 V/div.)
Figure 8. Peak?to?Peak Ripple on V OUT = 2.8 V,
I OUT = 13 A (Heavy Load)
Transient Response
The CS5157H V 2 control loop’s 100 ns reaction time
provides unprecedented transient response to changes in
input voltage or output current. Pulse by pulse adjustment of
Trace 1? Regulator Output Voltage (100 mV/div.)
Trace 2? Inductor Switching Node (5.0 V/div.)
Trace 3? Output Current (0.5 to 13 Amps) (10 A/div.)
Figure 10. CS5157H Demonstration Board Response to
13 A Load Turn On (Output Set for 2.8 V). Upon
Completing a Normal Off Time, The V 2 Control Loop
Immediately Connects the Inductor to the Input
Voltage, Providing 100% Duty Cycle. Regulation is
Achieved in Less Than 20 m s
duty cycle is provided to quickly ramp the inductor current
to the required level. Since the inductor current cannot be
changed instantaneously, regulation is maintained by the
output capacitor(s) during the time required to slew the
inductor current.
For best transient response, a combination of a number of
high frequency and bulk output capacitors are usually used.
If the maximum on time is exceeded while responding to
a sudden increase in load current, a normal off time occurs
to prevent saturation of the output inductor.
Trace 1? Regulator Output Voltage (100 mV/div.)
Trace 2? Inductor Switching Node (5.0 V/div.)
Trace 3? Output Current (13 to 0,5 Amps) (10 A/div.)
Figure 11. CS5157H Demonstration Board Response to
13 A Load Turn Off (Output Set for 2.8 V). V 2 Control
Topology Immediately Connects Inductor to Ground,
Providing 0% Duty Cycle. Regulation is Achieved in
Less Than 10 m s
PROTECTION AND MONITORING FEATURES
V CC1 Monitor
To maintain predictable startup and shutdown
characteristics an internal V CC1 monitor circuit is used to
Trace 1? Regulator Output Voltage (100 mV/div.)
Trace 2? Regulator Output Voltage (10 A/div.)
Figure 9. CS5157H Demonstration Board Response
prevent the part from operating below 3.75 V minimum
startup. The V CC1 monitor comparator provides hysteresis
and guarantees a 3.70 V minimum shutdown threshold.
to a 0.5 to 13 A Load Pulse (Output Set for 2.8 V)
http://onsemi.com
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相关代理商/技术参数 |
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| 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 |
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| 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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