MPS EVQ6541A-QK-00A User manual

EVQ6541A-QK-00A
40V, 8A, Three-Phase BLDC Motor Driver
with High-Side and Low-Side Logic Inputs
Evaluation Board
EVQ6541A-QK-00A Rev. 1.0 MonolithicPower.com 1
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DESCRIPTION
The EVQ6541A-QK-00A is an evaluation board
designed to demonstrate the capabilities of the
MPQ6541A, a three-phase brushless DC
(BLDC) motor driver. It operates from a wide
4.75V to 40V input voltage range.
The MPQ6541A has three integrated half-
bridges consisting of six N-channel power
MOSFETs. The rotor position information is
provided by the Hall sensors assembled in the
motor. The driver control signals are generated
via an external controller, such a microcontroller
unit (MCU) or field-programmable gate array
(FPGA).
The MPQ6541A is available in a QFN-26
(6mmx6mm) package.
ELECTRICAL SPECIFICATIONS
Parameter Symbol Value Units
Input voltage VIN 4.75 to 40 V
Maximum output
current IOUT_MAX 8 A
Reference voltage VREF 3.3 or 5 V
Logic input voltage V3P3 3.3 or 5 V
FEATURES
 Wide 4.75V to 40V Operating Input Range
 Integrated Bidirectional Current-Sense
Amplifiers
 Supports 100% Duty Cycle Operation
 High-Side (HS) and Low-Side (LS) Logic
Inputs
 Over-Current Protection (OCP) and Over-
Temperature Protection (OTP)
 Fault Indication
APPLICATIONS
 Three-Phase Brushless DC (BLDC) Motors
 Permanent Magnet Synchronous Motors
(PMSMs)
 Power Drills
 Impact Drivers
A
ll MPS parts are lead-free, halogen-free, and adhere to the RoHS
directive. For MPS green status, please visit the MPS website unde
r
Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are
trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
EVQ6541A-QK-00A EVALUATION BOARD
LxW (5.08cmx5.08cm)
Board Number MPS IC Number
EVQ6541A-QK-00A MPQ6541AGQKTE

EVQ6541A-QK-00A – 40V, 8A, HS/LS INPUTS, 3-PHASE BLDC DRIVER EVAL BOARD
EVQ6541A-QK-00A Rev. 1.0 MonolithicPower.com 2
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QUICK START GUIDE
1. Preset the power supply between 4.75V and 40V, then turn off the power supply.
2. Connect the power supply terminals to:
a. Positive (+): VIN
b. Negative (-): GND
3. Switch SW1 to position 1 (left) to turn the motor driver on.
4. Apply a 3.3V or 5V constant voltage to the 3P3 pin.
5. To set the current-sense output reference voltage (VREF), apply a 3.3V or 5V constant voltage to the
VREF pin.
6. Connect the motor driver’s Hall signals to the Hall sensor connector.
7. Connect the driver control signals (generated by the external controller) to the CN2 connector.
8. After making the connections, turn on the power supply.

EVQ6541A-QK-00A – 40V, 8A, HS/LS INPUTS, 3-PHASE BLDC DRIVER EVAL BOARD
EVQ6541A-QK-00A Rev. 1.0 MonolithicPower.com 3
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EVALUATION BOARD SCHEMATIC
SA SB SC
HSA
HSB
HSC
LSA
LSB
LSC
V
IN
SA SB SC
GND
3
1
2
SW
GND
3P3
GND
21
1μF/25VC2
SOC
SOB
SOA
499Ω
R1
12
LED
VIN VIN_ GND
GND
3P3 3P3_GND
GND
VREF VREF_GND
VREF
GND
SA
SA
SB SC
SB SC
LSA
LSB
LSC
HSA
HSB
HSC
GND
SOA
SOA
SOB SOC
SOB SOC
GND GND
1 2 3
CN 1
SA SB SC
NFAULT
NSLEEP
NFAULT NSLEE P
NFAULT NSLEEP
10
7
4
1
8
9
5
2
6
3
CN 2
3
5
1
2
4
Hall Sens or
GND
HA
HB
HC
3P3
HA
HB
HC
1kΩ
R9
CP 2
CP 1
3P3
GND
NS
1 2
D1
GND
VCP
VG
JP1
1kΩ
R1 0
1kΩ
R1 1
NFAULT
1
NSLEEP
2
LSA
3
LSB
4
LSC
5
HSA
6
HSB
7
HSC
8
SA
9
LSS
10
SB
11
SOC 17
GND 18
VCP 19
CP1 20
LSS
12
SC
13
VG 14
SOA 15
SOB 16
CP2 21 SC 22
VIN 23
SB 24
SA 26
VIN 25
U1
MPQ6541A
21
100nF/100V
C1
2 1
4.7μF/2 5V
C4
2 1
100nF/5 0V
C8
2 1
100nF/5 0V
C9
12
4.7μF/100V
C5
GND
12
470μF/100V
C3
12
4.7μF/1 00V
C6
12
4.7μF/100V
C7
4.99kΩ
R2
SOA SOB SOC
GND
4.99kΩ
R3
4.99kΩ
R4
4.99kΩ
R5
4.99kΩ
R6
4.99kΩ
R7
V
IN
V
IN
V
IN
V
REF
V
IN
Figure 1: Evaluation Board Schematic

EVQ6541A-QK-00A – 40V, 8A, HS/LS INPUTS, 3-PHASE BLDC DRIVER EVAL BOARD
EVQ6541A-QK-00A Rev. 1.0 MonolithicPower.com 4
5/10/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
EVQ6541A-QK-00A BILL OF MATERIALS
Qty Ref Value Description Package Manufacturer Manufacturer PN
1 R1 499Ω Film resistor, 1% 0603 Yageo RC0603FR-07499RL
6 R2, R3, R4,
R5, R6, R7 4.99kΩ Film resistor, 1% 0603 Yageo RC0603FR-074K99L
3 R9, R10,
R11 1kΩ Film resistor, 1% 0603 Yageo RC0603FR-071KL
1 C1 100nF Ceramic capacitor,
100V, X7R 0805 Murata GRM21BR72A104KAC4L
1 C2 1µF Ceramic capacitor,
25V, X7R 0603 Murata GRM188R71E105KA12D
1 C3 470µF Electrolytic capacitor,
100V DIP Jianghai CD263-100V470
1 C4 4.7µF Ceramic capacitor,
25V, X6S 0603 Murata GRM188C81E475KE11D
3 C5, C6, C7 4.7µF Ceramic capacitor,
100V, X8L 1210 Murata GCM32DL8EL475KE07L
2 C8, C9 100nF Ceramic capacitor,
50V, X7R 0603 Murata GCJ188R71H104KA12D
1 LED 2.6V Red LED 0805 Baihong BL-HUE35A-AV-TRB
1 SW 12VDC SPDT button DIP Wurth 450301014042
1 U1 MPQ6541A Three-phase BLDC
motor driver
QFN-26
(6mmx
6mm)
MPS MPQ6541AGQKTE
1 D1 NS
1 CN1 2.54mm 3-bit connector DIP Any
1 CN2 2.54mm 10-bit connector DIP Any
1 Hall sensor 2.54mm 5-bit connector DIP Any
1 CP1, CP2,
VCP 2.54mm 3-bit connector DIP Any
1 JP1 2mm 2-bit connector DIP Any
1 JP1 2mm 2-bit short jumper DIP Any
6
NFAULT,
NSLEEP,
SOA, SOB,
SOC, VG
1mm Yellow test point DIP Any
2 VIN,
VIN_GND 2mm Connector, 2mm needle DIP Any
7
3P3,
3P3_GND,
SA, SB, SC,
VREF,
VREF_GND
1mm Connector, 1mm
needle DIP Any

EVQ6541A-QK-00A – 40V, 8A, HS/LS INPUTS, 3-PHASE BLDC DRIVER EVAL BOARD
EVQ6541A-QK-00A Rev. 1.0 MonolithicPower.com 5
5/10/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
PCB LAYOUT
Figure 2: Top Silk Figure 3: Top Layer
Figure 4: Bottom Layer Figure 5: Bottom Silk

EVQ6541A-QK-00A – 40V, 8A, HS/LS INPUTS, 3-PHASE BLDC DRIVER EVAL 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.
EVQ6541A-QK-00A Rev. 1.0 MonolithicPower.com 6
5/10/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2021 MPS. All Rights Reserved.
REVISION HISTORY
Revision # Revision Date Description Pages Updated
1.0 5/10/2021 Initial Release -