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| 型号： | MAX15035ETL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 17/27页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC 15A 40TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 1.05V，1.5V |
| 输入电压： | 4.5 V ~ 26 V |
| PWM 型： | 电流模式 |
| 电流 - 输出： | 15A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 40-TQFN-EP（6x6） |
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15A Step-Down Regulator with Internal Switches
DYNAMIC REFIN WINDOW
REFIN
OUTPUT
VOLTAGE
INTERNAL EA TARGET = ACTUAL V OUT
INTERNAL
PWM CONTROL
PWM
SKIP
PWM
SKIP
LX
PGOOD
BLANK HIGH-Z
BLANK HIGH-Z
OVP
SET TO REF +
300mV
EA TARGET + 300mV
EA TARGET + 300mV
DYNAMIC TRANSITION WHEN SKIP = REF
Figure 5. Dynamic Transition when SKIP = REF
Valley Current-Limit Protection
The current-limit circuit employs a unique “valley ”
current-sensing algorithm that senses the inductor
current through the low-side MOSFET. If the current
through the low-side MOSFET exceeds the valley
current-limit threshold, the PWM controller is not
allowed to initiate a new cycle. The actual peak current
is greater than the valley current-limit threshold by an
amount equal to the inductor ripple current. Therefore,
the exact current-limit characteristic and maximum load
capability are a function of the inductor value and input
voltage. When combined with the undervoltage protec-
tion circuit, this current-limit method is effective in
almost every circumstance.
In forced-PWM mode, the MAX15035 also implements
a negative current limit to prevent excessive reverse
inductor currents when V OUT is sinking current. The
negative current-limit threshold is set to approximately
120% of the positive current limit.
Integrated Output Voltage
The MAX15035 regulates the valley of the output ripple,
so the actual DC output voltage is higher than the slope-
compensated target by 50% of the output ripple voltage.
Under steady-state conditions, the MAX15035’s internal
integrator corrects for this 50% output ripple-voltage
error, resulting in an output voltage that is dependent
only on the offset voltage of the integrator amplifier pro-
vided in the Electrical Characteristics table.
Dynamic Output Voltages
The MAX15035 regulates FB to the voltage set at REFIN.
By changing the voltage at REFIN (Figure 1), the
MAX15035 can be used in applications that require
dynamic output-voltage changes between two set
points. For a step-voltage change at REFIN, the rate of
change of the output voltage is limited either by the
internal 9.45mV/μs slew-rate circuit or by the component
selection —inductor current ramp, the total output
capacitance, the current limit, and the load during the
transition—whichever is slower. The total output capaci-
tance determines how much current is needed to
change the output voltage, while the inductor limits the
current ramp rate. Additional load current may slow
down the output voltage change during a positive REFIN
voltage change, and may speed up the output voltage
change during a negative REFIN voltage change.
______________________________________________________________________________________
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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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