MP6510

—4.5V-TO-16V, 1.2A, SINGLE-PHASE, BRUSHLESS DC MOTOR DRIVER

MP6510 Rev.1.01

www.MonolithicPower.com

10

1/16/2018

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© 2018 MPS. All Rights Reserved.

APPLICATION INFORMATION

Selecting the Input Capacitor

The input capacitor absorbs excess armature

inductor energy with every commutation. For

margin of safety for input OVP. Motors with larger

armature inductors require larger input capacitors.

Setting the Frequency

For most applications, use a 100pF capacitor for

6

OSC

P

f

3 10 / C (Hz)





Connecting the Motor

Figure 3 shows that the OUT1 and OUT2

connectors connect to the motor armature. When

flows from OUT2 to OUT1. The opposing current

directions generate opposing polarities in the

armature

winding.

For

most

applications,

carefully connect OUT1 and OUT2 to the motor

terminators according to the Hall sensor setting

position.

Incorrect

connections

will

cause

abnormal motor function.

M

B rus hles s DC

Motor

SW1

SW2

SW4

SW3

V c c

OUT 1

OUT2

Figure 3: Power Stage

DESIGN EXAMPLE

Below is an example design that follows the

application guidelines for the given specifications:

4.5V to 16V

1.2A

30kHz

Figure 4 shows a detailed application schematic.

For more applications, please refer to the related

Evaluation Board Data Sheets.

P-GND

OUT2

VCC

RMI

VTH

COSC

FG

RD

OUT1

CT

VREF

IN-

HB

IN+

Hall

Motor

P-GND

S-GND

10uF

B130LAW-7-F

MP6510

GND

0O

B130LAW-7-F

1kO

VTH

CT=1µF

Figure 4: Detailed Application Schematic