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参数资料
| 型号： | MAX15035EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 19/27页 |
| 文件大小： | 0K |
| 描述： | EVALUATION KIT FOR MAX15035 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 系列： | Quick-PWM™ |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 电流 - 输出： | 15A |
| 输入电压： | 4.5 ~ 26 V |
| 稳压器拓扑结构： | 降压 |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX15035 |
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15A Step-Down Regulator with Internal Switches
POWER-GOOD AND FAULT PROTECTION
TARGET
- 200mV
TARGET
+ 300mV
FB
EN
SOFT-START
OVP
COMPLETE
ONE-
SHOT
200 μ s
IN
OUT
UVP
FAULT
LATCH
OVP ENABLED
FAULT
POWER-GOOD
CLK
Figure 7. Power-Good and Fault Protection
output voltage, connect an external pullup resistor
between PGOOD and V DD . A 100k Ω pullup resistor
works well in most applications. Figure 7 shows the
power-good and fault-protection circuitry.
Overvoltage Protection (OVP)
When the internal feedback voltage rises 300mV above
the target voltage and OVP is enabled, the OVP compara-
tor immediately forces LX low, pulls PGOOD low, sets the
fault latch, and disables the SMPS controller. Toggle EN
or cycle V CC power below the V CC POR to clear the fault
latch and restart the controller.
Undervoltage Protection (UVP)
When the feedback voltage drops 200mV below the
target voltage (REFIN), the controller immediately pulls
PGOOD low and triggers a 200μs one-shot timer. If the
feedback voltage remains below the undervoltage fault
threshold for the entire 200μs, the undervoltage fault
high impedance on LX. Toggle EN or cycle V CC power
below V CC POR to reactivate the controller after the
junction temperature cools by 15°C.
Quick-PWM Design Procedure
Firmly establish the input voltage range and maximum
load current before choosing a switching frequency and
inductor operating point (ripple-current ratio). The prima-
ry design trade-off lies in choosing a good switching fre-
quency and inductor operating point, and the following
four factors dictate the rest of the design:
? Input Voltage Range: The maximum value
(V IN(MAX) ) must accommodate the worst-case input
supply voltage. The minimum value (V IN(MIN) ) must
account for the lowest input voltage after drops due
to connectors, fuses, and battery selector switches. If
there is a choice at all, lower input voltages result in
better efficiency.
latch is set and the SMPS begins the shutdown
sequence. When the internal target voltage drops
below 0.1V, the MAX15035 forces a high impedance on
LX. Toggle EN or cycle V CC power below V CC POR to
clear the fault latch and restart the controller.
Thermal-Fault Protection (T SHDN )
The MAX15035 features a thermal fault-protection cir-
cuit. When the junction temperature rises above
+160°C, a thermal sensor activates the fault latch, pulls
PGOOD low, shuts down the controller, and forces a
?
Maximum load current: There are two values to
consider. The peak load current (I LOAD(MAX) )
determines the instantaneous component stresses
and filtering requirements, and thus drives output
capacitor selection, inductor saturation rating, and
the design of the current-limit circuit. The continu-
ous load current (I LOAD ) determines the thermal
stresses and thus drives the selection of input
capacitors, MOSFETs, and other critical heat-con-
tributing components.
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX15035EVKIT+ | 功能描述:电源管理IC开发工具 MAX15035 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 |
| MAX15036ATE/V+ | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch 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 |
| MAX15036ATE/V+T | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch 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 |
| MAX15036ATE+ | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch 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 |
| MAX15036ATE+T | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch 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 |
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