参数资料
型号: NCP1582DR2G
厂商: ON Semiconductor
文件页数: 11/16页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM VM 8-SOIC
产品变化通告: Product Discontinuation 01/Oct/2008
标准包装: 2,500
PWM 型: 电压模式
输出数: 1
频率 - 最大: 400kHz
占空比: 80%
电源电压: 4.5 V ~ 13.2 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: 0°C ~ 70°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
NCP1582, NCP1582A, NCP1583
Design Example
Pole of the compensation network is calculated as
CP +
+ 700 pF
Switching Frequency F SW = 350 KHZ
Output Capacitance C ESR = 45 m W /Each
Output Capacitance C out = 6630 m F
Output Inductance L out = 0.75 m H
Input Voltage V in = 12 V
Output Voltage V out = 3.3 V
Choose the loop gain crossover frequency;
follows;
+
FP + 5 * FCO + 175 kHz
1
2 * p * FP * R C
1
2 * p * 175 kHz * 1500
FCO + 1 * FSW + 35 kHz
10
The corner frequency of the output filter is calculated
below;
The recommended compensation values are;
R C = 1500, C C = 46 nF, C P = 700 pF
The NCP158x bode plot as measured from the network
analyzer is shown below.
FLC +
1
2 * p * 0.75 m H * 6630 m F
+ 2.3 kHz
Let R C = 1500
Check that the ESR zero frequency is not too high;
t SW
FESR +
1
2 * p @ CESR @ CO
F
5
This condition is mandatory for loop stability.
Zero of the compensation network is calculated as
follows;
FZ + FLC
CC +
1
2 * p * FZ * R C
Top plot: Phase ? Frequency (Phase Margin = 62.519 ° )
+
1
2 * p * 2.3 kHz * 1500
+ 46 nF
Bottom plot: Gain ? Frequency (UGBW= 5 MHz)
Figure 15. Typical Bode plot of the Open ? loop
The compensation capacitor also acts as the soft start
capacitor. By adjusting the value of this compensation
capacitor, the soft start time can be adjusted.
http://onsemi.com
11
Frequency Response of the NCP158x
相关PDF资料
PDF描述
ASM12DSEH-S243 CONN EDGECARD 24POS .156 EYELET
RCM31DCCT-S189 CONN EDGECARD 62POS R/A .156 SLD
RCM31DCBT-S189 CONN EDGECARD 62POS R/A .156 SLD
RCM31DCAT-S189 CONN EDGECARD 62POS R/A .156 SLD
EYM28DTBT-S189 CONN EDGECARD 56POS R/A .156 SLD
相关代理商/技术参数
参数描述
NCP1582DR2GEVB 功能描述:电源管理IC开发工具 ANA SWITCH REG EVAL BOARD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
NCP1583DR2G 功能描述:电压模式 PWM 控制器 BUCK CONTROLLER RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel
NCP1583DR2GEVB 功能描述:电源管理IC开发工具 ANA SWITCH REG EVAL BOARD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
NCP1586DR2G 功能描述:IC REG CTRLR BUCK PWM VM 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP(0.300",7.62mm) 包装:管件 产品目录页面:1316 (CN2011-ZH PDF)
NCP1586DR2GH 制造商:ON Semiconductor 功能描述: