MP8865

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6A, 21V High Efficiency Synchronous Step-Down Converter with I2C Interface


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Product Description

The MP8865 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with a I2C control interface. It offers a very compact solution to achieve a 6A continuous output current with excellent load and line regulation over a wide input-supply range. The MP8865 has synchronous-mode operation for higher efficiency over the output-load range. The reference voltage level can be controlled, on-the-fly through a 3.4Mbps I2C serial interface. The voltage range can be adjusted from 0.6V to 1.87V in 10mV steps. Also, the voltage slew rate, switching frequency, enable, and power-saving mode are selectable through the I2C interface. Current-mode operation provides fast transient response and eases loop stabilization. Full protection features include over-current protection (OCP), over-voltage protection (OVP), and thermal shut down (TSD). The MP8865 requires a minimal number of readily available, standard, external components and is available in a 15-pin QFN15 (3x3mm) package.

Product Features

  • Wide 4.5V to 21V Operation Input Range
  • 45mO/18mO Low RDS(ON) Internal Power MOSFETs
  • 1% VOUT Accuracy
  • I2C Programmable Reference-Voltage Range from 0.6V to 1.87V in 10mV Steps with Slew-Rate Control
  • I2C Selectable Switching Frequency. Default 600kHz Switching Frequency.
  • Programmable Output Voltage
  • Power-Saving Mode, OTP, and OCP via I2C
  • Power Good Indication
  • 1-Bit I2C Address Set
  • OCP Protection in Hiccup Mode
  • External Soft-Start
  • Available in a QFN3x3 Package

Parametrics

  • fsw (max) (kHz)1600
  • Vin (min) (V)4.5
  • Vin (max) (V)21
  • Iout (max) (A)6
  • Isw Limit (typ) (A)9.5
  • Max Duty Cycle (%)0.95
  • Vfb (typ) (V)0.6
  • Iq (typ) (mA)0.5
  • Regulated Outputs1
  • Vout (max) (V)5.2
  • Vout (min) (V)0.6
  • GradeCatalog
  • PackageQFN-15 (3x3)
  • 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

21V, 6A, High-Efficiency, Sync, Step-Down Converter with I2C Interface

The MP8865 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with an I2C control interface. The MP8865 offers a very compact solution that achieves 6A of continuous output current with excellent load and line regulation over a wide input supply range. The MP8865 uses synchronous-mode operation for higher efficiency over the output load range.

Highly customizable, the MP8865 is capable of supporting a diverse array of mid-voltage applications. Users can program it via an MPS I2C GUI; however, changes made in I2C mode will not be retained once the EVB is powered down.

The EVKT8865 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 MP8865 is right for their target application.

$75.00 + tax



6A High Efficient Synchronous Step-Down Converter with I2C Interface

The EV8865-Q-00A is used for demonstrating the performance of MPS’s MP8865. MP8865 is a highly integrated and high frequency synchronous step-down switcher with I2C control interface. It is optimized to support up to 6A load current over an input supply range from 4.5V to 21V with excellent load and line regulation.

Current-Mode operation provides fast transient response and eases loop stabilization. The output voltage level can be controlled, on-the fly through a 3.4Mbps I2C serial interface. Voltage range can be adjusted from 0.6V to 1.87V in 10mV steps. Voltage slew rate, switching frequency and power savings mode are also selectable through the I2C interface. Fully protection features includes over current protection, over voltage protection and over temperature protection.

MP8865 is available in QFN15 (3mmx3mm) package.

$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



Communication Interface Device USB to I2C/PMBus, included with product evaluation kit or can be purchased separately. 

The EVKT-USBI2C-02 is included with the product evaluation kit, or it can be purchased separately. This communication interface provides the USB to I2C port as well as PMBus capabilities. It is designed to work with MPS I2C and PMBus products, and Virtual Bench Pro, and I2C GUI tools.  Together with MPS Virtual Bench Pro and I2C GUI tools, it provides a quick and easy way to evaluate the performance of MPS digital products.

The EVKT-USBI2C-02 kit includes:

  • 1 USB to I2C communication device interface
  • 1 USB cable
  • 1 10-pin ribbon cable
  • 1 3-pin ribbon cable
  • Thumbdrive with datasheet and driver files

$25.00 + tax


Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.