MP6507 –2.7V-TO-15V, 700mA, STEPPER MOTOR DRIVER

MP6507 Rev. 1.05

www.MonolithicPower.com

14

4/30/2018

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PCB Layout Guide

The printed circuit board (PCB) should use a

heavy ground-plane. The MP6507 must be

soldered directly onto the board for better

electrical and thermal performance. The sense

resistors should be placed as close as possible

to the part for accurate current detection.

The MP6507 uses an exposed pad, which

provides a path for enhanced thermal dissipation.

The thermal pad should be soldered directly to

copper on the PCB. Thermal vias are often used

to transfer heat to other layers of the PCB.

Top Layer

Bottom Layer

Figure 8: PCB Layout (TSSOP16-EP)

Design Example

Below is a design example following the

application guidelines for the specifications:

Table 5: Design Example

2.7V-15V

500mA

The detailed application schematic is shown in

Figure 9. The typical performance and circuit

waveforms have been shown in the Typical

Performance Characteristics section. For more

possible applications of this device, please refer

to related Evaluation Board Data Sheets.

Motor

BST

VIN

AOUT1

AOUT2

BOUT1

BOUT2

Fault

VDD

MP6507

SENA

WindingA

SENB

C4

C2

C1

OFF

ON

GND

FAULT

BIN2

AIN1

AIN2

BIN1

0.1uF

100nF

2.2uF

400mO

400mO

nSLEEP

+

C5

C3

100uF

10uF

Figure 9: Detailed Application Schematic