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MP8867

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8A, 17V High Efficiency Synchronous Step-Down Converter with I2C Interface
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Datasheet (EN)

产品描述

The MP8867 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with an I2C control interface. It achieves an 8A output current with excellent load and line regulation over a wide input supply range. The reference voltage level is controlled by the I2C serial interface with an adjustable reference voltage ranging from 0.6V to 1.87V in 10mV steps. The voltage scaling slew rate, the switching frequency, enable/sync, and power save mode are all selectable through the I2C interface. Current-mode operation provides a fast transient response and eases loop stabilization. EN/SYNC supports external clock synchronization, and an open-drain power good indicates when the output voltage is in the nominal range. Full protection features include over-voltage protection (OVP), hiccup over-current protection (OCP), and thermal shutdown. The MP8867 requires a minimal number of readily available, standard, external components and is available in a QFN-14 (3x4mm) package.

产品特性

  • Wide 4.5V to 17V Operating Input Range
  • 1% Internal Reference Accuracy
  • I2C Programmable Reference Output Voltage
  • Reference Voltage Range from 0.6V to 1.87V in 10mV Steps with Slew Rate Control
  • I2C Selectable Switching Frequency
  • 200kHz to 2MHz Synchronized External Clock
  • OTP and OCP Hiccup Indication via I2C
  • Selectable PSM and FS through I2C
  • Programmable Soft-Start Time
  • Open-Drain Power Good Indicator
  • Small 3x4mm QFN-14 Package

技术参数

  • fsw (max) (kHz)1500
  • 最小输入电压4.5
  • Vin (max) (V)17
  • Iout (max) (A)8
  • Isw Limit (typ) (A)10
  • Max Duty Cycle (%)0.95
  • Vfb (typ) (V)0.6
  • Iq (typ) (mA)0.56
  • 额定输出1
  • Vout (max) (V)5.5
  • Vout (min) (V)0.6
  • GradeCatalog
  • PackageQFN-14 (3x4)
  • Control ModeCurrent Mode
  • Common FeaturesExternal Soft Start, Light-Load Efficiency, Power Good, Synchronous Rectification
  • Special FeaturesI2C Interface, Programmable Frequency, Programmable Output Voltage, Selectable Power-Saving Mode

EVKT-8867


17V, 8A, High-Efficiency, Synchronous, Step-Down Converter

The MP8867 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with an I2C control interface. The MP8867 achieves 8A of output current with excellent load and line regulation over a wide input supply range.

Highly customizable, the MP8867 is capable of supporting a diverse array of low-voltage applications.  Users can program it via MPS I2C GUI; however, changes made in I2C mode will not be retained once the EVB is powered down.

The EVKT8867 is a valuable evaluation tool well-suited for all types of experience levels, from beginner to expert, and can help users quickly determine if the MP8867 is right for their target application.

US$ 75.00 + tax


EV8867-LE-00A


High Efficiency, 8A, 17V, Synchronous Step-Down Converter with I2C Interface

The EV8867-LE-00A is used for demonstrating the performance of MPS’s MP8867. MP8867 is a highly integrated and high frequency synchronous step-down switcher with I2C control interface. It is optimized to support up to 8A load current over an input supply range from 4.5V to 17V with excellent load and line regulation.

Current-Mode operation provides fast transient response and eases loop stabilization. The reference voltage level can be controlled, on-the fly through an I2C serial interface. Reference voltage range can be adjusted from 0.6V to 1.87V in 10mV steps. Voltage scaling slew rate, enable and power saving mode are also selectable through the I2C interface. Full protection features include over voltage, hiccup over-current protection and thermal shut down.

The MP8867 is available in QFN-14(3mmx4mm) package.

US$ 25.00 + tax


MP88xx I2C GUI


Configure multiple parameters of the MP88xx including output voltage and fsw.

This I2C GUI allows you to program the MP88xx . By using this I2C GUI, you can set the output voltage, switching frequency, slew rate, and operation mode. Please reference the parts respective user guides for installation and programing instructions.

System Requirements:

Windows 7 or later

.Net Framework 4 or later


EVKT-USBI2C-02


USB 转 I2C/PMBus 通信接口设备，包含在产品评估套件中，也可单独购买

EVKT-USBI2C-02 包含在产品评估套件中，也可单独购买。该通信接口同时兼容USB 转 I2C 端口和 USB 转 PMBus 端口。它是设计用于 MPS I2C 和 PMBus 产品和虚拟平台及 I2C GUI 工具上。与 MPS 虚拟平台和 I2C GUI一起使用可以简单快速地评估 MPS 的数字产品性能。

EVKT-USBI2C-02 套件包括：

  • 1 个 USB 转 I2C 通信设备接口
  • 1 根 USB 线
  • 1 根 10 芯排线
  • 1 根 3 芯排线
  • 带有规格书和驱动文件的拇指驱动

US$ 25.00 + tax