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MOSFET驱动器IC一般采用桥式配置,用于驱动外部MOSFET,广泛用于电源和电机驱动应用。MOSFET驱动器满足电桥的定时要求,保证同一时刻只有一个MOSFET导通。

“或”操作MOSFET控制器驱动大功率MOSFET,代替“或”配置二极管,适用于高可靠性、冗余、并行控制电源。与“或”配置肖特基二极管相比,MOSFET具有极低的导通电阻,所以功耗较低、尺寸更小,在大功率应用中无需散热器。“或”逻辑配置MOSFET控制器提供驱动电源MOSFET必须的控制逻辑。

MOSFET驱动器可广泛用于从电机驱动器和负载开关到开关电源的各种应用。单路和双路驱动器,再加上副边同步驱动器,可有效提高隔离设计的效率。提供评估板,用于快速创建原型和设计验证。业界领先的特性包括:

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器件号 标题 文件类型 Date

An Ideal Diode Can Be an Engineer’s Best Friend

November 01, 2018

Guest blogger Jim Harrison takes a look at key applications for ideal diodes and explores how they can benefit various designs.

特色产品

MAX15492 单相同步MOSFET驱动器,具有超低功耗待机

MAX15492是一款同步半桥驱动器,具有超低功耗模式。该器件与控制器IC如MAX15411、MAX15566/MAX15567或MAX15576/MAX15577一起工作,用于多相CPU核稳压器。为了提供最佳的轻载效率,控制器可将器件置于超低功耗模式,此时电源电流仅4µA。

低边驱动器优化驱动3nF电容负载,具有3ns/7ns的典型下降/上升时间,高边驱动器具有7ns/14ns典型下降/上升时间。自适应死区时间控制可防止直通电流并将转换器效率最大化。

MAX15492采用小型、8引脚(2mm × 2mm) TDFN封装,带有裸焊盘。
MAX14914EVKIT Evaluation Kit for the <a href="/en/products/MAX14914">MAX14914</a>/<a href="/en/products/MAX14914A">MAX14914A</a>/<a href="/en/products/MAX14914B">MAX14914B</a>

MAX14914EVKIT Evaluation Kit for the MAX14914/MAX14914A/MAX14914B

The MAX14914 evaluation kit (EV kit) provides a proven design to evaluate the MAX14914/MAX14914A/ MAX14914B, a configurable industrial digital output driver/digital input. The EV kit allows controlling of the MAX14914 as either a digital output (in ei
MAX14914 High-Side Switch with Settable Current-Limiting, Push-Pull Driver Option, and Digital Input Configuration

MAX14914 High-Side Switch with Settable Current-Limiting, Push-Pull Driver Option, and Digital Input Configuration

The MAX14914 is a high-side/push-pull driver that operates as both an industrial digital output (DO) and an industrial digital input (DI). The MAX14914 is specified for operation with supplies up to 40V. The high-side switch current is resistor settable from 135mA (min) to 1.3A (min). The high-side driver’s on-resistance is 120mΩ (typ) at 125°C ambient temperature. Optional push-pull operation allows driving of cables and fast discharge of load capacitance. The output voltage is monitored and indicated through the active-low DOI_LVL pin for safety applications.

The MAX14914 complies with Type 1, Type 2, or Type 3 input characteristics when configured for DI operation.

Design Solution: Finally – Digital IO Means Digital IO! ›

MAX14914A High-Side Switch with Settable Current-Limiting, Push-Pull Driver Option, and Digital Input Configuration

MAX14914A High-Side Switch with Settable Current-Limiting, Push-Pull Driver Option, and Digital Input Configuration

The MAX14914 is a high-side/push-pull driver that operates as both an industrial digital output (DO) and an industrial digital input (DI). The MAX14914 is specified for operation with supplies up to 40V. The high-side switch current is resistor settable from 135mA (min) to 1.3A (min). The high-side driver’s on-resistance is 120mΩ (typ) at 125°C ambient temperature. Optional push-pull operation allows driving of cables and fast discharge of load capacitance. The output voltage is monitored and indicated through the active-low DOI_LVL pin for safety applications.

The MAX14914 complies with Type 1, Type 2, or Type 3 input characteristics when configured for DI operation.

Design Solution: Finally – Digital IO Means Digital IO! ›

MAX14914B High-Side Switch with Settable Current-Limiting, Push-Pull Driver Option, and Digital Input Configuration

MAX14914B High-Side Switch with Settable Current-Limiting, Push-Pull Driver Option, and Digital Input Configuration

The MAX14914 is a high-side/push-pull driver that operates as both an industrial digital output (DO) and an industrial digital input (DI). The MAX14914 is specified for operation with supplies up to 40V. The high-side switch current is resistor settable from 135mA (min) to 1.3A (min). The high-side driver’s on-resistance is 120mΩ (typ) at 125°C ambient temperature. Optional push-pull operation allows driving of cables and fast discharge of load capacitance. The output voltage is monitored and indicated through the active-low DOI_LVL pin for safety applications.

The MAX14914 complies with Type 1, Type 2, or Type 3 input characteristics when configured for DI operation.

Design Solution: Finally – Digital IO Means Digital IO! ›

MAX14922EVKIT Evaluation Kit for the MAX14922

The MAX14922 evaluation kit (EV kit) provides a proven design to evaluate the MAX14922 industrial-grade high- side switch controller for ground connected resistive, inductive, and capacitive loads with diagnostics. The MAX14922 EV kit must be powered

MAX14922 High-Side Switch Controller with Current Limiting

The MAX14922 is a high-side, n-channel FET controller for implementing industrial high-side switches for switching ground-connected loads. The MAX14922 device controls an external nMOS power transistor, allowing low RON high-side switch applications f

MAX5079EVKIT MAX5079评估板

MAX5079评估板(EV kit)用于演示并联电源系统中MAX5079 “或” MOSFET控制器的功能。该评估板采用“或” MOSFET并联连接两个电源,可模拟故障状态,并演示故障状态下电源总线的隔离功能。该评估板采用3.0V至12.6V输入电压。外部欠压锁定门限设置为3.0V,过压门限设置为13.2V。如果重新配置电路且选用额外的辅助电源,工作电压可以低至1V。配合n沟道MOSFET,MAX5079控制器可实现正向压降极低的二极管功能。

该评估板上的MAX5079控制器分别监视VIN1和VIN2的输入电压,并与电源总线电压VBUS比较。当VIN_电压升至高于VBUS电压时,MOSFET快速导通。如果任意一路VIN_电源电压降至低于VBUS,则MAX5079以2A (典型值)吸入电流对MOSFET栅极放电,并在200ns (典型值)内关断MOSFET,与总线有效隔离。
MAX14917 Industrial Octal High-Side Switch

MAX14917 Industrial Octal High-Side Switch

The MAX14917 has eight high-side switches specified to deliver up to 700mA (min) continuous current per channel. The high-side switches have on-resistance of 120mΩ (typ) at 25°C ambient temperature. The device has an SPI interface that can be daisy ch
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MAX17600

快速切换时间、短传输延迟,高频电路的理想选择。
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MAX17606

4.5V至36V输入、高电流驱动器提高效率和热管理性能。
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MAX5048C

支持逻辑输入信号,驱动较大外部MOSFET,高频开关的理想选择。

参考设计

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MAXREFDES120

小尺寸24V输入模块,带有副边同步MOSFET驱动器,输出为5V @ 2.5A。
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MAXREFDES119

小尺寸24V输入模块,带有副边同步MOSFET驱动器,输出为5V @ 1.8A。