MP8795H

16V, 20A, Synchronous, Step-Down Converter with Adjustable Current Limit, Programmable Frequency, and Voltage Tracking

Datasheet

Description

The MP8795H is a fully integrated, high-frequency, synchronous, buck converter. The MP8795H offers a very compact solution that achieves up to 20A of output current with excellent load and line regulation over a wide input supply range. The MP8795H operates at high efficiency over a wide output current load range.

The MP8795H adopts an internally compensated constant-on-time (COT) control mode that provides fast transient response and eases loop stabilization.

The operating frequency can be set to 600kHz, 800kHz, or 1000kHz easily with MODE pin configuration, allowing the MP8795H frequency to remain constant regardless of the input and output voltages.

The output voltage start-up ramp is controlled by an internal 1ms timer and can be increased by adding a capacitor on REF/TRK. An open-drain power good (PGOOD) signal indicates if the output is within its nominal voltage range or not. PGOOD is clamped at around 0.7V with an external pull-up voltage when the input supply fails to power the MP8795H.

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

The MP8795H requires a minimal number of readily available, standard, external components and is available in a QFN-21 (3mmx4mm) package.

Features & Benefits

Wide Input Voltage Range
2.7V to 16V with External 3.3V VCC Bias
4V to 16V with Internal Bias or External 3.3V VCC Bias
Differential Output Voltage Remote Sense
Programmable Accurate Current Limit Level
20A Output Current
Low R_DS(ON) Integrated Power MOSFETs
Adaptive COT for Ultrafast Transient Response
Stable with Zero ESR Output Capacitor
Forced CCM Operation
Excellent Load Regulation
Output Voltage Tracking
PGOOD Active Clamped at Low Level during Power Failure
Programmable Soft-Start Time from 1ms
Pre-Bias Start-Up
Selectable Switching Frequency from 600kHz, 800kHz, and 1000kHz
Non-Latch OCP, OVP, UVP, UVLO, and Thermal Shutdown.
Output Adjustable from 0.6V to 90% * VIN, up to 5.5V Max
Available in a QFN-21 (3mmx4mm) Package

Active Part Numbers:

MP8795HGLE-Z MP8795HGLE-P

Meaning of P & Z

Evaluation Tools

EV8795H-LE-00A Evaluation Kit High-Efficiency, 16V, 20A, Synchronous Step-Down Converter Evaluation Board

The EV8795H-LE-00A is an evaluation board designed to demonstrate the capabilities of the MP8795H, a monolithic, high-efficiency, synchronous step-down converter. The MP8795H can deliver up to 20A of continuous load current across a wide operating input voltage (V_IN) range. High efficiency is achieved across the wide output current (I_OUT) range.

The MP8795H adopts internally compensated constant-on-time (COT) control to provide fast transient response and ease loop stabilization. The EV8795H-LE-00A can be turned on or off via a remote on/off enable (EN) input that is referenced to ground. This input is compatible with commonly used logic devices.

The MP8795H is available in a QFN-21 (3mmx4mm) package.

$25.00
+ tax