MIC28511 Evaluation Board

60V/3A Synchronous Buck Regulator

Hyper Speed Control is a trademark and HyperLight Load is a registered trademark of Micrel, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

April 9, 2015

Revision 1.0

General Description

Micrel’s MIC28511 is a synchronous step-down regulator

featuring unique adaptive on-time control architecture with

integrated power MOSFETs. The MIC28511 operates over

an input supply range of 4.6V to 60V, and can be used to

supply up to 3A of output current. The output voltage is

adjustable down to 0.8V with a guaranteed accuracy of

±1% from 0°C to 85°C. The device operates with a

programmable

switching

frequency

from

200kHz

to

680kHz (nominal).

The MIC28511-1 uses the HyperLight Load

to operate in pulse-skipping mode at light load while

functioning in fixed-frequency CCM mode from medium

load to heavy load. The MIC28511-2 utilizes Hyper Speed

Control

mode under all load conditions.

Datasheets and support documentation are available on

Micrel’s web site at: www.micrel.com.

Requirements

The MIC28511 evaluation board requires only a single

power supply with at least 5A current capability. For

can be bypassed by tying VDD to VIN.

Precautions

The MIC28511 evaluation board does not have reverse

polarity protection. Applying a negative voltage to the VIN

and GND terminals can damage the device. The maximum

damage the device.

Ordering Information

Part Number

Description

MIC28511-1YML EV

MIC28511 Evaluation Board

MIC28511-2YML EV

Evaluation Board