MPS EV6551-QB-00A Manual de usuario

EV6551-QB-00A

14V, 5A, H-Bridge Motor Driver

Evaluation Board

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DESCRIPTION

The EV6551-QB-00A is an evaluation board

designed to demonstrate the capabilities of the

MP6551, an H-bridge motor driver.

The MP6551 provides up to 5A of output

current across a wide 2.5V to 14V input voltage

range. Its input control signals are applied via a

connector on the evaluation board (EN1, EN2,

IN1, and IN2).

ELECTRICAL SPECIFICATIONS

Parameter Symbol Value Units

Input voltage VIN 2.5 to 14 V

Maximum output

current IOUT_MAX 5 A

Reference voltage VREF 3.3 V

3P3 voltage V3P3 3.3 V

FEATURES

 Wide 2.5V to 14V Input Supply Range

 Up to 5A Output Current (IOUT)

 Integrated Bidirectional Current-Sense

Amplifiers

 Supports 100% Duty Cycle Operation

 Low-Power Sleep Mode

 Over-Current Protection (OCP)

 Over-Temperature Protection (OTP)

 Fault-Indicating Output

APPLICATIONS

 Mini Drones

 Battery-Powered Toys

ll MPS parts are lead-free, halogen-free, and adhere to the RoHS

directive. For MPS green status, please visit the MPS website unde

Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are

trademarks of Monolithic Power Systems, Inc. or its subsidiaries.

EV6551-QB-00A EVALUATION BOARD

LxW (5.08cmx5.08cm)

Board Number MPS IC Number

EV6551-QB-00A MP6551GQB

EV6551-QB-00A – 14V, 5A, H-BRIDGE MOTOR DRIVER EVALUATION BOARD

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QUICK START GUIDE

1. Preset the power supply between 2.5V and 14V, then turn off the power supply.

2. Connect the power supply terminals to:

a. Positive (+): VIN

b. Negative (-): GND

3. After making the connections, turn on the power supply.

4. Apply a 3.3V constant voltage to the 3P3 pin.

5. To set the current-sense reference voltage (VREF), apply a 3.3V constant voltage to the VREF pin.

6. Connect the input control signals (generated by the external controller) to the ENx and INx pins.

7. Adjust the HS-FET turn-on/off speed via resistor RV1. The lower the resistance, the faster the HS-

FET turn-on/off speed.

EV6551-QB-00A – 14V, 5A, H-BRIDGE MOTOR DRIVER EVALUATION BOARD

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EVALUATION BOARD SCHEMATIC

VIN

3P3

GND

4.99kΩ

CM1 CM2

VREF

GND

499Ω

LED 1

GND

VIN

70μF/25V

VIN

IN_GND

GND

3P3 3P3_GND

GND

REF

REF_GND

VREF

GND

OUT1

OUT2

EN1

IN1

EN2

IN2

CM1

CM2

2 1

100nF/25V

GND

2 1

100nF/25V

GND

NFAULT

3P3

1 2

GND

VIN

EN1 IN1 EN2 IN2

NFAULT

IN1

EN1

IN2

EN2

GND

CM2 7

CM1 11

OUT2 8

OUT2 3

OUT1 10

VIN 2

OUT1 1

MP6551

OUT1

OUT2

CM1

CM2

IN1

IN2

EN1

EN2

RV1

500kΩ

GND

100nF/25V

10μF/25V

4.99kΩ

Figure 1: Evaluation Board Schematic

EV6551-QB-00A – 14V, 5A, H-BRIDGE MOTOR DRIVER EVALUATION BOARD

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EV6551-QB-00A BILL OF MATERIALS

Qty Ref Value Description Package Manufacturer Manufacturer PN

1 R1 499Ω Film resistor, 1% 0603 Yageo RC0603FR-07499RL

4 R2, R3, R4,

R5 4.99kΩ Film resistor, 1% 0603 Yageo RC0603FR-074K99L

1 RV1 500kΩ Square trimming

potentiometer DIP Bourns 3266W-1-504LF

1 C1 10μF Ceramic capacitor,

25V, X5R 1210 TDK C3225X5R1E106K

3 C2, C8, C9 100nF Ceramic capacitor,

25V, X8R 0603 Murata GCM188R91E104KA37D

1 C3 470μF Electrolytic capacitor,

25V DIP Jianghai CD287-25V470

1 LED Red LED 0805 Bright LED BL-HUE35A-AV-TRB

1 D1 NS

1 U1 MP6551 14V, 5A, H-bridge

motor driver

QFN-14

(2.5mmx3mm) MPS MP6551GQB

VIN,

VIN_GND,

OUT1, OUT2

2mm Connector, Φ = 2mm

needle DIP Any

SR, EN1, IN1,

EN2, IN2,

NFAULT, 3P3,

CM1, CM2,

VREF, GND,

GND

1mm Connector, Φ = 1mm

needle DIP Any

EV6551-QB-00A – 14V, 5A, H-BRIDGE MOTOR DRIVER EVALUATION BOARD

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PCB LAYOUT

Figure 2: Top Silk Figure 3: Top Layer

Figure 4: Bottom Layer

EV6551-QB-00A – 14V, 5A, H-BRIDGE MOTOR DRIVER EVALUATION BOARD

Notice: The information in this document is subject to change without notice. Please contact MPS for current specifications.

Users should warrant and guarantee that third-party Intellectual Property rights are not infringed upon when integrating MPS

products into any application. MPS will not assume any legal responsibility for any said applications.

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REVISION HISTORY

Revision # Revision Date Description Pages Updated

1.0 3/9/2021 Initial Release -

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