MPQ8633B

MPQ8633B

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

Datasheet EN

Description

The MPQ8633B is a fully integrated, high-frequency, synchronous buck converter. It offers a very compact solution that can achieve up to 20A of output current (I_OUT) across a wide input voltage (V_IN) supply range, with excellent load and line regulation. The MPQ8633B operates at high efficiency over a wide output current load range.

The MPQ8633B adopts an internally compensated constant-on-time (COT) control to provide fast transient response and eases loop stabilization. The switching frequency (f_SW) can be set to 600kHz, 800kHz, or 1000kHz easily with MODE configuration, allowing f_SW to remain constant regardless of the input and output voltages.

The output voltage (V_OUT) start-up ramp is controlled by an internal 1ms timer. It can be increased by adding a capacitor on TRK/REF. An open-drain power good (PGOOD) signal indicates whether the output is within its nominal voltage range. PGOOD is clamped at about 0.7V via an external pull-up voltage when the input supply fails to power the MPQ8633B.

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

The MPQ8633B 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 (V_OUT) Remote Sense
Configurable Accurate Current Limit Level
20A Output Current (I_OUT)
Low R_DS(ON) Integrated Power MOSFETs
Proprietary Switching Loss Reduction Technique
Adaptive Constant-On-Time (COT) Control for Ultra-Fast Transient Response
Stable with Zero ESR Output Capacitor
0.5% Reference Voltage across a 0°C to +70°C Junction Temperature Range
1% Reference Voltage across a -40°C to +125°C Junction Temperature Range
Selectable Pulse-Skip Mode orForced Continuous Conduction Mode (FCCM)
Excellent Load Regulation
V_OUT Tracking
V_OUT Discharge
PGOOD Active Clamped at Low Level during Power Failure
Configurable Soft-Start Time from 1ms
Pre-Bias Start-Up
600kHz, 800kHz, or 1000kHz Selectable Switching Frequency (f_SW)
Non-Latch OCP, UVP, UVLO, Thermal Shutdown, and Latch-Off for OVP
Output Adjustable from 0.6V to 90% x VIN, up to 5.5V Max
Available in a QFN-21 (3mmx4mm) Package

Active Part Numbers:

MPQ8633BGLE-P MPQ8633BGLE-Z

Meaning of P & Z

Evaluation Tools

EVQ8633B-LE-00A Evaluation Kit High Efficiency, 16V, 20A Synchronous Step-Down Converter Evaluation Board

The EVQ8633B-LE-00A is an evaluation board for the MPQ8633B, a high-efficiency, monolithic, synchronous, step-down converter.

This EVB can deliver 20A of continuous load current over a wide operating input range. High efficiency can be achieved over a wide output current load range.

The MPQ8633B adopts internally compensated constant-on-time (COT) control mode that provides fast transient response and eases loop stabilization.

This EVB can be turned on or off via a remote on/off input (EN) referenced to ground. This input is compatible with popular logic devices.

$25.00
+ tax

MPQ8633AGLE-Z

16V, 12A, Synchronous Step-Down Converter with Adjustable Current Limit, Configurable Frequency, and Voltage Tracking

Buy direct from MPS