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品質

MPQ8633A

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

アクティブ

Datasheet EN

概要

The MPQ8633A is a fully integrated, high-frequency, synchronous buck converter. It offers a very compact solution to achieve up to 12A output current over a wide input supply range with excellent load and line regulation. The MPQ8633A operates at high efficiency over a wide output current load range.
The MPQ8633A adopts internally compensated constant-on-time (COT) control mode that provides fast transient response and eases loop stabilization.
The operating frequency is set easily to 600kHz, 800kHz, or 1000kHz with the MODE configuration, allowing the MPQ8633A frequency to remain constant regardless of the input/output voltages.
The output voltage 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 signal indicates the output is within its nominal voltage range. The PGOOD is clamped to around 0.7V with external pull-up voltage when the input supply fails to power the MPQ8633A.
Fully integrated protection features include OCP, OVP, UVP, and OTP.
The MPQ8633A requires a minimal number of readily available, standard external components and is available in a QFN 3mmx4mm package.

機能と利点

Wide Input Voltage Range from 2.7V:
- 2.7V to 16V with External 3.3V Bias,
- 4V to 16V with Internal Bias or External 3.3V Bias
Differential Output Voltage Remote Sense
Programmable Accurate Current Limit Level
12A Output Current
Low RDS(ON) Integrated Power MOSFETs
Proprietary Switching Loss Reduction Technique
Adaptive COT for Ultra-Fast Transient Response
Stable with Zero-ESR Output Capacitor
0.5% Reference Voltage over 0C to +70C Junction Temperature Range
1% Reference Voltage from -40C to +125C Junction Temperature Range
Selectable Pulse Skip or Forced CCM Operation
Excellent Load Regulation
Output Voltage Tracking
Output Voltage Discharge
PGOOD Active Clamped 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, UVP, UVLO, Thermal Shutdown, and Latch-Off for OVP
Output Adjustable from 0.6 V to 90%*Vin, Up to 5.5 V Max
Available in a QFN 3mmx4mm Package

Evaluation Tools

EVQ8633A-LE-01A Evaluation Kit High Efficiency, 12A,16V Synchronous Step-Down Converter Evaluation Board

The EVQ8633A-LE-01A is an evaluation board for the MPQ8633A, a high efficiency, monolithic, synchronous step-down converter.

The EV board can deliver 12A continuous load current over a wide operating input range. High efficiency can be achieved over a wide output current load range.

The MPQ8633A adopts internally compensated constant-on-time (COT) control mode that provides fast transient response and eases loop stabilization.

This EV 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.

￥2,716.25
+ tax