MP8861

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2.85V - 18V, 6A, High-Efficiency, Wide-Input, Synchronous, Step-Down Converter with Integrated Telemetry via I2C Interface


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产品描述

The MP8861 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with an I2C control interface. The MP8861 offers a fully integrated solution that achieves 6A of continuous output current with excellent load and line regulation over a wide input supply range.

The output voltage level can be controlled on-the-fly through an I2C serial interface. The reference voltage range can be adjusted from 0.6V to 1.108V in 4mV steps. The voltage slew rate, frequency, current limit, hiccup/latch-off protection, enable, and power-save mode (PSM) are also selectable through the I2C interface.

Constant-on-time (COT) control operation provides fast transient response. An open-drain power good (PG) pin indicates that the output voltage is in the nominal range. Full protection features include over-voltage protection (OVP), over-current protection (OCP), and thermal shutdown.

The MP8861 is available in a QFN-14 (3mmx4mm) package.

产品特性

  • Wide 2.85V to 18V Operating Input Range
  • 6A Continuous Output Current 
  • 1% Internal Reference Accuracy
  • I2C Programmable Reference Range from 0.6V to 1.108V in 4mV Steps with Slew Rate Control
  • 5% Accuracy Output Voltage and Output Current Monitoring via I2C
  • Selectable PFM/PWM Mode, Adjustable Frequency and Current Limit through I2C
  • Four Different Selectable I2C Addresses
  • External Soft Start (SS)
  • Open-Drain Power Good (PG) Indication
  • Output Over-Voltage Protection (OVP)
  • Hiccup/Latch-Off Over-Current Protection (OCP)
  • VOUT Adjustable up to 5.5V using FB pin
  • Available in a QFN-14 (3mmx4mm) Package

技术参数

  • fsw (max) (kHz)1250
  • 最小输入电压2.85
  • Vin (max) (V)18
  • Iout (max) (A)6
  • Isw Limit (typ) (A)8.5
  • Vfb (typ) (V)0.72
  • Iq (typ) (mA)0.42
  • 额定输出1
  • Vout (max) (V)5.5
  • Vout (min) (V)0.6
  • GradeCatalog
  • PackageQFN-14 (3x4)
  • Control ModeCOT
  • Common FeaturesExternal Soft Start, Light-Load Efficiency, Power Good, Synchronous Rectification
  • Special Features4 种不同的 I2C 地址可选, 5% Accuracy Output Voltage and Output Current Readback via I2C, I2C Interface, Programmable Output Voltage, Selectable Current Limit, Selectable PFM/PWM Mode

2.85V-18V, 6A, High-Efficiency, Wide-Input, Synchronous, Step-Down Converter

The MP8861 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with an I2C control interface. The MP8861 offers a fully integrated solution that achieves 6A of continuous output current with excellent load and line regulation over a wide input supply range.

Highly customizable, the MP8861 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 EVKT8861 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 MP8861 is right for their target application.

US$ 75.00 + tax



High Efficiency,6A,18V, Synchronous Step-Down Converter with I²C Interface

The EV8861-L-00A is used for demonstrating the performance of MPS’s MP8861. MP8861 is a highly integrated and high frequency synchronous step-down switcher with I2C control interface. It offers a fully integrated solution that achieves 6A of continuous output current with excellent load and line regulation over a wide input supply range.

COT control operation provides fast transient response and eases loop stabilization. In I2C control loop, the output voltage level can be controlled, on-the fly through an I2C serial interface. Output voltage range can be adjusted from 0.6V to 1.108V in 4mV steps. Voltage scaling slew rate, enable and power saving mode are also selectable through the I2C interface. Full protection features include over voltage, over-current protection and thermal shut down.

The MP8861 is available in QFN-14(3mmx4mm) package.

US$ 25.00 + tax



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



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