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EVQ8633B-LE-00A

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High Efficiency, 16V, 20A Synchronous Step-Down Converter Evaluation Board

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$25.00 /unit

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Datasheet (EN)

Product Description

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.

Product Features

WideInputVoltageRangefrom 2.7V:
- 2.7V to 16V with External 3.3V VCC Bias
- 4V to 16V with Internal VCC 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
Proprietary Switching Loss Reduction Technique
Adaptive Constant-on-Time (COT) Control for Ultrafast Transient Response
Stable with Zero-ESR Output Capacitor
0.5% Reference Voltage Over 0°C to +70°C Junction Temperature Range
1% Reference Voltage Over -40°C to +125°C Junction Temperature Range
Selectable Pulse-Skip Mode 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 of 600kHz,
800kHz, or 1000kHz
Non-Latch OCP, UVP, UVLO, Thermal Shutdown, and Latch-Off for OVP
Output Adjustable from 0.6V to 90%*Vin, Up
to 5.5V Max
Available in a QFN (3mmx4mm) Package

Parametrics

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

The MPQ8633B is a fully integrated, high-frequency, synchronous buck converter. It 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 MPQ8633B operates at high efficiency over a wide output current load range. The MPQ8633B 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 configuration, allowing the MPQ8633B frequency to remain constant regardless of the input and 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 (PGOOD) signal indicates if the output is within its nominal voltage range. PGOOD is clamped at around 0.7V with 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.