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| 型号： | MAX15049ETJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 24/31页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM STP-DN TRIPL 32WQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 应用： | 电源控制器，序列发生器 |
| 电源电压： | 4.7 V ~ 23 V |
| 电流 - 电源： | 6mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 管件 |
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MAX15048/MAX15049
Triple-Output Buck Controllers
with Tracking/Sequencing
As with the previous example, the actual gain and phase
response is overlaid on the power modulator’s asymp-
totic gain response. It is readily observed that the more
dramatic gain and phase transition at or near the power
modulator’s resonant frequency, f LC , vs. the gentler
response of the previous example. This is due to the
component’s lower parasitics leading to the higher fre-
quency of the inherent ESR zero of the output capacitor.
In this example, the desired crossover frequency occurs
below the ESR zero frequency.
In this example, a compensator with an inherent midfre-
quency double-zero response is required to mitigate the
effects of the filter’s double-pole. Such is available with
the Type III topology.
80
As demonstrated in Figure 4d, the Type III’s midfrequen-
cy double-zero gain (exhibiting a +20dB/decade slope,
noting the compensator’s pole at the origin) is designed
to compensate for the power modulator’s double-pole
-40dB/decade attenuation at the desired crossover fre-
quency, f CO (again, G E/A + G MOD = 0dB at f CO ).
In the above example, the power modulator’s inherent
(midfrequency) -40dB/decade rolloff is mitigated by
the midfrequency double-zero’s +20dB/decade gain to
extend the active regulation gain bandwidth of the volt-
age regulator. As shown in Figure 4d, the net result is an
approximate doubling in the regulator’s gain bandwidth
while providing greater than 60° of phase margin (the
difference between G E/A and G MOD respective phases
at crossover, f CO ).
270
60
< G E/A
203
40
20
|G E/A |
f LC
f J
135
68
0
-20
-40
-60
-80
< G MOD
|G MOD |
f ZERO, ESR
0
-68
-135
-203
-270
FREQUENCY (Hz)
Figure 4d. Power Modulator (High-Quality C OUT ) and Type III Compensator Responses
24
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX15049ETJ+ | 功能描述:DC/DC 开关控制器 1.2MHz Triple Buck w/Tracking 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 |
| MAX15049ETJ+ | 制造商:Maxim Integrated Products 功能描述:IC BUCK CNTRL TRIPLE 32WQFN 制造商:Maxim Integrated Products 功能描述:IC, BUCK, CNTRL, TRIPLE, 32WQFN |
| MAX15049ETJ+ | 制造商:Maxim Integrated Products 功能描述:IC PWM STEP-DOWN DC/DC CONVER |
| MAX15049ETJ+T | 功能描述:DC/DC 开关控制器 1.2MHz Triple Buck w/Tracking 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 |
| MAX15049EVKIT+ | 功能描述:电源管理IC开发工具 MAX15049 Eval Kit 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 |
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