参数资料
型号: MIC2169BMM TR
厂商: Micrel Inc
文件页数: 12/15页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM VM 10-MSOP
标准包装: 2,500
PWM 型: 电压模式
输出数: 1
频率 - 最大: 550kHz
占空比: 92%
电源电压: 3 V ~ 14.5 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
包装: 带卷 (TR)
其它名称: MIC2169BMMTR
MIC2169BMMTR-ND
MIC2169
100
71.607
50
0
Micrel
1.10
1 .10
1 .10
1 .10
42.933
50
100
100
3
f
4
5
6
1000000
Figure 8. Error Ampli ? er Phase Curve
Total Open-Loop Response
The open-loop response for the MIC2169 controller is easily
obtained by adding the power path and the error ampli ? er
gains together, since they already are in Log scale. It is
desirable to have the gain curve intersect zero dB at tens of
kilohertz, this is commonly called crossover frequency; the
phase margin at crossover frequency should be at least 45°.
Phase margins of 30° or less cause the power supply to have
substantial ringing when subjected to transients, and have
little tolerance for component or environmental variations.
250
269.097
300
Figure 9. Open-Loop Gain Margin
1.10
1 .10
1 .10
1 .10
Figures9and10showtheopen-loopgainandphasemargin.
It can be seen from Figure 9 that the gain curve intersects
the 0dB at approximately 50kHz, and from Figure 10, that at
350
360
10
10
100
3
f
4
5
6
1000000
50kHz, the phase shows approximately 50° of margin.
Figure 10. Open-Loop Phase Margin
M9999-032409
12
March 2009
相关PDF资料
PDF描述
MIC2169BYMME IC REG CTRLR BUCK PWM VM 10-MSOP
MIC2171BU TR IC REG MULTI CONFIG 2.5A TO263-5
MIC2174-1YMM TR IC REG CTRLR BUCK PWM 10-MSOP
MIC2176-3YMM TR IC REG CTRLR BUCK PWM 10-MSOP
MIC2177BWM TR IC REG BUCK SYNC ADJ 2.5A 20SOIC
相关代理商/技术参数
参数描述
MIC2169BYMM 功能描述:DC/DC 开关控制器 500kHz PWM Synchronous Buck Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
MIC2169BYMM TR 功能描述:DC/DC 开关控制器 500kHz PWM Synchronous Buck Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
MIC2169BYMME 功能描述:直流/直流开关转换器 Synchronous Step Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MIC2169BYMME TR 功能描述:直流/直流开关转换器 Synchronous Step Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MIC2169MM 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:500 KHZ PWM SYNCHRONOUS BUCK CONTROL IC