MP8870

MP8870

18V, 15A, Synchronous Step-Down Converter with Configurable System Settings via I²C and MTP

MPL

Datasheet

Description

MPL

Optimized Performance with MPS Inductor

The MP8870 is a fully integrated, high-frequency, synchronous buck converter with an I²C control interface. It offers a very compact solution that achieves up to 15A of output current (I_OUT) with excellent load and line regulation across a wide input supply range. The MP8870 operates at high efficiency across a wide I_OUT load range.

The output voltage (V_OUT) can be controlled on the fly via the I²C serial interface. The reference voltage (V_REF) can be set between 0.3V and 1.536V, in 1.5mV steps. The voltage transition slew rate, frequency, current limit, hiccup mode and latch-off protection, enable, and power-save mode can also be selected via the I²C interface.

The MP8870 adopts an internally compensated constant-on-time (COT) control mode that provides fast transient response and eases loop stabilization.

An open-drain power good (PG) signal indicates whether the output is within its nominal voltage range. PG is clamped at around 0.7V with an external pull-up voltage when the input supply fails to power the MP8870.

Full protection features include over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and over-temperature protection (OTP).

The MP8870 requires a minimal number of readily available, standard external components, and it is available in a QFN-21 (3mmx4mm) package.

Features & Benefits

Wide 3V to 18V Input Voltage (V_IN) Range
15A Continuous/20A Peak Output Current (I_OUT)
8mΩ/2.5mΩ Low On Resistance (R_DS(ON)) Internal Power MOSFETs
Two-Time Multiple-Time Programmable (MTP) Memory
PMBus Compliant
Differential Output Voltage (V_OUT) Remote Sense
Low 60μA Quiescent Current (I_Q)
Adaptive Constant-On-Time (COT) Control for Ultra-Fast Transient Response
Stable with Zero-ESR Output Capacitor (C_OUT)
I²C-Configurable Reference Voltage (V_REF) from 0.3V to 1.536V (in 1.5mV Steps) with Slew Rate Control
Selectable Pulse-Frequency Modulation (PFM) or Pulse-Width Modulation (PWM) Mode, Adjustable Frequency, and Current Limit via the I²C Interface
7 Different Selectable I²C Addresses
Configurable Soft Start (SS)
V_OUT Tracking
Open-Drain Power Good (PG)/PMBus Alert Selectable via the I²C
PG Active Clamped at Low Level during Power Failure
Pre-Biased Start-Up
Over-Current Protection (OCP), Under-Voltage Protection (UVP), Under-Voltage Lockout (UVLO), Thermal Shutdown, and Over-Voltage Protection (OVP)
Available in a QFN-21 (3mmx4mm) Package

Active Part Numbers:

MP8870GL-xxxx-Z MP8870GL-xxxx-P MP8870GL-0001-Z MP8870GL-0001-P

Meaning of P & Z

Related Products

Optimized Performance with MPS Inductor

EVL8870-L-00A 18V, 15A, Synchronous Step-Down Converter Evaluation Board

MPL

Optimized Performance with MPS Inductor

The EVL8870-L-00A is an evaluation board designed to demonstrate the capabilities of the MP8870, a fully integrated, high-frequency, synchronous, buck converter with an I²C control interface. It offers a very compact solution that achieves up to 15A of output current (I_OUT), with excellent load and line regulation across a wide input supply range. The MP8870 operates at high efficiency across a wide I_OUT load range.

The output voltage (V_OUT) level can be controlled on the fly via the I²C serial interface. The reference voltage (V_REF) range can be adjusted between 0.3V and 1.536V, in 1.5mV steps. The voltage transition slew rate, frequency, current limit, hiccup/latch-off protection, enable, and power-save mode are also selectable via the I²C.

The MP8870 adopts internally compensated constant-on-time (COT) control, which provides fast transient response and facilitates loop stabilization.

Full protection features include over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and over-temperature protection (OTP).

The MP8870 requires a minimal number of readily available, standard external components, and is available in a QFN-21 (3mmx4mm) package.

$25.00
+ tax