MP8794

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

MPL

Datasheet

Description

MPL

Optimized Performance with MPS Inductor

The MP8794 is a fully integrated, high-frequency, synchronous buck converter. The device offers a compact solution that achieves up to 20A of output current (I_OUT) with excellent load and line regulation across a wide input supply range. The MP8794 operates at a high efficiency across the I_OUT load range.

The device adopts internally compensated constant-on-time (COT) control to provide fast transient response and ease loop stabilization. The switching frequency (f_SW) can be set to 600kHz, 800kHz, or 1000kHz with MODE configuration. This allows the device's frequency to remain constant, regardless of the input voltage (V_IN) or output voltage (V_OUT).

The V_OUT start-up ramp is controlled by an internal 1ms timer that can be increased by adding a capacitor to REF/TRK. An open-drain power good (PGOOD) signal indicates whether the output is within its nominal voltage range. PGOOD is clamped to about 0.7V with an external pull-up voltage when the input supply fails to power the MP8794.

Full protection features include over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and over-temperature protection (OTP). The MP8794 requires a minimal number of readily available, standard external components, and is available in a QFN-21 (3mmx4mm) package.

Features & Benefits

Wide Input Voltage (V_IN) Range
2.7V to 16V with External 3.3V V_CC Bias
4V to 16V with Internal Bias or External 3.3V V_CC Bias
Differential Output Voltage (V_OUT) Remote Sense
Configurable Accurate Current Limit Level
20A Output Current (I_OUT)
Low R_DS(ON) Integrated Power MOSFETs
Adaptive COT for Ultra-Fast Transient Response
Stable with Zero-ESR Output Capacitors
V_OUT Discharge
Excellent Load Regulation
V_OUT Tracking
PGOOD Active Clamped to Low Levels during Power Failure
Configurable Soft-Start Time (t_SS) from 1ms
Pre-Biased Start-Up
Selectable Switching Frequency (f_SW): 600kHz, 800kHz, or 1000kHz
Non-Latch OCP, OVP, UVP, UVLO, and Thermal Shutdown
Adjustable Output from 0.6V to 90% of V_IN, Up to 5.5V Max
Available in a QFN-21 (3mmx4mm) Package
Optimized Performance with MPS Inductor MPL-AY1265 Series

Active Part Numbers:

MP8794GLE-Z MP8794GLE-P

Meaning of P & Z

Evaluation Tools

Optimized Performance with MPS Inductor

EVL8794-LE-00A Evaluation Kit 20A, 16V, High-Efficiency, Synchronous Step-Down Converter Evaluation Board

MPL

Optimized Performance with MPS Inductor

The EVL8794-LE-00A is an evaluation board designed to demonstrate the capabilities of the MP8794. The MP8794 is a high-efficiency, monolithic, synchronous step-down converter. The evaluation board can deliver 20A of continuous load current (I_LOAD) across a wide operating input range. High efficiency can be achieved across a wide output current (I_OUT) load range.

The MP8794 adopts internally compensated constant-on-time (COT) control mode that provides fast transient response and eases loop stabilization. This evaluation board can be turned on or off via a remote on/off input (EN) that is referenced to ground. This input is compatible with popular logic devices.

The MP8794 is available in a QFN-21 (3mmx4mm) package.

$25.00
+ tax