MP6522
35V, 3.2A, H-Bridge Motor Driver
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP6522 is an H-bridge motor driver that
operates from a supply voltage of up to 35V
and delivers a peak motor current of up to 3.2A.
The MP6522 is typically used to drive DC brush
motors.
An internal current-sensing circuit provides an
output with a voltage proportional to the load
current. Additionally, cycle-by-cycle current
regulation and limiting is provided. These
features do not require the use of a low-ohm
shunt resistor.
Full protection features include over-current
protection (OCP), input over-voltage protection
(OVP), under-voltage lockout (UVLO), and
thermal shutdown.
The MP6522 is available in a 24-pin QFN
(5mmx5mm) package with an exposed thermal
pad.
Wide 5.4V to 35V Input Voltage Range
3.2A Maximum Output Current
Internal, Full, H-Bridge Driver
Cycle-by-Cycle Current Regulation and
Limiting
Low On Resistance (HS: 300mΩ; LS:
300mΩ)
Simple, Versatile Logic Interfaces
3.3V and 5V Compatible Logic Inputs
Over-Current Protection (OCP)
Over-Voltage Protection (OVP)
Thermal Shutdown
Under-Voltage Lockout (UVLO)
Fault Indication Output
Thermally
Enhanced
Surface-Mount
Package
Available in a QFN-24 (5mmx5mm)
Package
APPLICATIONS
Solenoid Drivers
DC Brush Motor Drives
All MPS parts are lead-free, halogen-free, and adhere to the RoHS
directive. For MPS green status, please visit the MPS website under
Quality Assurance. “MPS” and “The Future of Analog IC Technology” are
registered trademarks of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
1.0MP6522 Rev. 1.02
www.MonolithicPower.com
3/21/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
1
MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER
ORDERING INFORMATION
Part Number*
MP6522GU*
Package
QFN-24 (5mmx5mm)
Top Marking
See Below
* For Tape & Reel, add suffix –Z (e.g. MP6522GU–Z)
TOP MARKING
MPS: MPS prefix
YY: Year code
WW: Week code
MP6522: Part number
LLLLLLL: Lot number
PACKAGE REFERENCE
TOP VIEW
QFN-24 (5mmx5mm)
1.0MP6522 Rev. 1.02
www.MonolithicPower.com
3/21/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
2
MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER
ABSOLUTE MAXIMUM RATINGS
(1)
Supply voltage (VIN) ....................... -0.3V to 40V
OUTx voltage (VOUT1/2) .................... -0.7V to 40V
VCP, CPB .............................. VIN to VIN + 6.5V
ISET ............................................... -0.3V to 4.5V
All other pins to GND ..................... -0.3V to 6.5V
ESD rating (HBD).......................................... 2kV
Continuous power dissipation (TA = +25°C) (2)
..................................................................... 3.5W
Storage temperature .................-55°C to +150°C
Junction temperature .............................. +150°C
Lead temperature (solder) ...................... +260°C
Recommended Operating Conditions (3)
Thermal Resistance (4)
θJA
θJC
QFN-24 (5mmx5mm) ............... 36 ...... 8 .... °C/W
NOTES:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX)-TA)/θJA. Exceeding the maximum allowable power
dissipation produces an excessive die temperature, causing
the regulator to go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
Supply voltage (VIN) ........................ 5.4V to 35V
Peak output current (IOUT) .......................... ±3.2A
Load current (IVISEN) ................................... ±2mA
Operating junction temp. (TJ). ...-40°C to +125°C
1.0MP6522 Rev. 1.02
www.MonolithicPower.com
3/21/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
3
MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER
ELECTRICAL CHARACTERISTICS
VIN = 24V, TA = +25°C, unless otherwise noted.
Parameter
Power Supply
Input supply voltage
Quiescent current
Charge pump frequency
Internal MOSFETs
Symbol
VIN
IQ
ISLEEP
fCP
RHS
Output on resistance
RLS
Body diode forward voltage
Control Logic
Input logic low threshold
Input logic high threshold
Logic input current
VF
VIL
VIH
IIN(H)
IIN(L)
RPD
Internal pull-down resistance
nFault Output (Open-Drain Output)
Output low voltage
VOL
Output high leakage current
IOH
Protection Circuits
VIN_RISE
UVLO rising threshold
VHYS
UVLO hysteresis
VOVP
Input OVP threshold
∆VOVP
Input OVP hysteresis
IOCP1
Over-current trip level
IOCP2
tOCPD
Over-current deglitch time
tOCP
Over-current retry time
TTSD
Thermal shutdown
∆TTSD
Thermal shutdown hysteresis
Current Control
Off time
ISET current
Current trip voltage (rising)
Current trip voltage (falling)
VISEN Output
Output voltage accuracy
Condition
Min
Typ
Max
Units
5.4
24
35
V
1.5
2
mA
1
µA
kHz
0.45
Ω
VIN = 24V, nSLEEP = 1,
no load current
VIN = 24V, nSLEEP = 0
660
VIN = 24V, IOUT = 1A,
TJ = 25°C
VIN = 24V, IOUT = 1A,
TJ = 85°C
VIN = 24V, IOUT = 1A,
TJ = 25°C
VIN = 24V, IOUT = 1A,
TJ = 85°C
IOUT = 1.5A
VIH = 5V
VIL = 0.8V
0.3
0.35
0.3
Ω
0.45
0.35
Ω
2
-12
-2
1.1
V
0.8
V
V
µA
µA
kΩ
12
2
530
IO = 5mA
VO = 3.3V
36
Sinking
Sourcing
tITRIP
IISET
VITRIP-R
VITRIP-F
At VISEN
At VISEN
∆VVISEN
VISET > 0.5V
3.2
3.2
After ITRIP
90
1.44
1.15
5.1
310
38
2000
4
4
500
0.9
165
30
17
100
1.5
1.2
Ω
0.5
1
V
µA
5.3
V
mV
V
mV
A
A
ns
ms
°C
°C
40
5.2
5.2
110
1.56
1.25
µs
µA/A
V
V
5
%
-5
1.0MP6522 Rev. 1.02
www.MonolithicPower.com
3/21/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
4
MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER
Current Sense
ISET vs. Temperature
ISET Resistor = 1kΩ
IOUT = 1A
300
200
250
200
150
150
100
100
ISET
50
106
105
104
103
ISET(μA)
250
VISEN(mV)
ISET(μA)
TYPICAL CHARACTERISTICS
VISEN
0.5
1
1.5
IOUT(A)
2
100
98
0
0
101
99
50
0
102
97
2.5
-50
Current Trip Voltage (Rising)
vs. Temperature
-20
10
40
70
TEMPERATURE(o C)
100
130
Current Trip Voltage (Falling)
vs. Temperature
1.52
1.22
1.215
1.515
VTRIP(V)
VTRIP(V)
1.21
1.205
1.51
1.505
1.2
1.195
1.19
1.5
-50
-20
10
40
70
100
TEMPERATURE(o C)
-50
130
HS RON vs. Temperature
390
390
370
370
350
350
RON(mΩ)
RON(mΩ)
410
330
310
330
310
290
290
270
270
250
10
40
70
TEMPERATURE(o C)
130
IOUT = 1A
410
-20
10
40
70
100
TEMPERATURE(o C)
LS RON vs. Temperature
IOUT = 1A
-50
-20
100
130
250
-50
-20
10
40
70
TEMPERATURE(o C)
100
1.0MP6522 Rev. 1.02
www.MonolithicPower.com
3/21/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
130
5
MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 24V, IOUT = 1A, TA = 25°C, unless otherwise noted.
VOUT
20V/div.
VISET
1V/div.
VISEN
1V/div.
IOUT
1A/div.
VIN
10V/div.
VIN
10V/div.
VISEN
500mV/div.
VOUT
10V/div.
VISEN
500mV/div.
VOUT
10V/div.
IOUT
500mA/div.
IOUT
500mA/div.
VnFAULT
1V/div.
VnSLEEP
2V/div.
VnSLEEP
2V/div.
VISEN
500mV/div.
VISEN
500mV/div.
VOUT
10V/div.
VOUT
10V/div.
IOUT
500mA/div.
IOUT
500mA/div.
VnFAULT
1V/div.
VnFAULT
1V/div.
VOUT1
20V/div.
VOUT2
20V/div.
VOUT1
20V/div.
VOUT1
20V/div.
VOUT2
20V/div.
IOUT
5A/div.
VOUT2
20V/div.
IOUT
5A/div.
IOUT
5A/div.
1.0MP6522 Rev. 1.02
www.MonolithicPower.com
3/21/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
6
MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER
PIN FUNCTIONS
Pin #
1
24
2, 3,
16, 17
Name
IN1
IN2
4
nSLEEP
GND
5, 20,
21, 22
6, 7
OUT1
8
ISET
9, 10, 11
VIN
12, 13
14
15
18
19
OUT2
CPA
CPB
VCP
VISEN
23
nFAULT
EP
GND
NC
Description
Control inputs. IN1 and IN2 have internal pull-down resistors.
System ground connection.
Sleep mode input. Set nSLEEP to logic low to enter low-power sleep mode. nSLEEP
has an internal pull-down resistor.
No connection.
Output terminal 1.
Current programming resistor. Connect a resistor from ISET to ground to set the
current limit and VISEN output voltage.
Input supply voltage. Decouple VIN to GND with a ceramic capacitor ≥100nF to
GND.
Output terminal 2.
Charge pump flying capacitor. Connect a 100nF ceramic capacitor between CPA
and CPB.
Charge pump output. Connect a 100nF capacitor from VCP to VIN.
Current sense output voltage.
Fault indication. nFAULT is an open-drain output. nFAULT is at logic low when in a
fault condition (OCP, OTP, OVP).
Exposed pad. The exposed pad must be connected to ground.
1.0MP6522 Rev. 1.02
www.MonolithicPower.com
3/21/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
7
MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER
BLOCK DIAGRAM
Figure 1: Functional Block Diagram
1.0MP6522 Rev. 1.02
www.MonolithicPower.com
3/21/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
8
MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER
OPERATION
The MP6522 is an H-bridge motor driver that
integrates four N-channel power MOSFETs with
3.2A of peak current capability. The MP6522
operates over a wide 5.4V to 35V input voltage
range and is designed to drive DC brush motors,
solenoids, and other loads.
Current Sensing
The current flowing in the two low-side
MOSFETs is sensed with an internal currentsensing circuit. A voltage proportional to the
output current is sourced on VISEN.
The VISEN output voltage scaling is set by a
resistor connected between ISET and ground.
For 1A of output current, 100µA of current is
sourced into the resistor connected to ISET. For
example, if a 10kΩ resistor is connected
between ISET and ground, the output voltage
on VISEN is 1V/A of output current.
The current is sensed when one of the low-side
MOSFETs is turned on, including during slow
decay (brake) mode.
The load current applied to VISEN should be
kept below 2mA with no more than 500pF of
capacitance.
Current Limit and Regulation
The current in the outputs is limited using
constant-off-time pulse-width modulation (PWM)
control circuitry.
In PWM, a diagonal pair of MOSFETs is turned
on initially and drives current through the load.
The current increases in the load, which is
sensed by the internal current-sense circuit. If
the load current reaches the current-trip
threshold, the H-bridge switches to slow decay
mode with the two low-side MOSFETs turned
on.
After a fixed off-time (tITRIP), if the load current
falls at least 20% below the current-limit
threshold, the MOSFETs are re-enabled and
the cycle repeats. If the current is still higher
than this level, the off time is extended until the
current falls to 20% below the current limit
threshold.
The current-limit threshold is reached when
VISEN reaches 1.5V. For example, with a 10kΩ
resistor from ISET to ground, the VISEN
voltage is 1V/A of output current. Therefore,
when the current reaches 1.5A, the VISET
voltage reaches 1.5V, and a current trip occurs.
During current regulation, nFAULT is not
activated.
Blanking Time
There is often a current spike during start-up
due to the body diode’s reverse-recovery
current or the shunt capacitance of the load.
This current spike requires filtering to prevent it
from erroneously shutting down the high-side
MOSFET. An internal fixed blanking time (tOCPD)
blanks the output of the current-sense
comparator when the outputs are switched.
This blanking time also sets the minimum on
time for the high-side MOSFET.
Input Logic
For the MP6522, control of the outputs is
accomplished through IN1 and IN2 (see Table
1).
Table 1: Output Control Pins
IN1
0
0
1
1
IN2
0
1
0
1
OUT1
Z
L
H
L
OUT2
Z
H
L
L
Function
Coast
Forward
Reverse
Brake (low)
nSLEEP Operation
Driving nSLEEP low puts the device into a lowpower sleep state. In this state, all internal
circuits including the gate drive charge pump
are disabled, and the H-bridge outputs are
turned off. All inputs are ignored when nSLEEP
is active low. When waking up from sleep mode,
approximately 1ms of time must pass before
the outputs can operate.
Fault
The MP6522 provides an nFAULT pin, which is
driven active low if any protection circuits (overcurrent, over-voltage, over-temperature) are
activated. nFAULT is not driven low when a
current-limit trip occurs. nFAULT is an opendrain output and requires an external pull-up
resistor. When the fault condition is removed,
nFAULT is pulled inactive high by the pull-up
resistor.
1.0MP6522 Rev. 1.02
www.MonolithicPower.com
3/21/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
9
MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER
Over-Current Protection (OCP)
The over-current protection (OCP) circuit
protects the device from damaging high
currents at the outputs. If the current through a
MOSFET exceeds the over-current threshold
for longer than the over-current deglitch time, all
MOSFETs in the H-bridge are disabled, and
nFAULT is driven low. The driver remains
disabled for the over-current retry time (tOCP), at
which point the driver is re-enabled
automatically. Over-current conditions are
sensed on both high- and low-side devices (i.e.:
a short to ground, supply, or across the motor
winding results in an over-current shutdown.
Note that OCP does not use the current-sense
circuitry used for PWM current control and is
independent of the ISET resistor value.
Input
Under-Voltage
Lockout
(UVLO)
Protection
If at any time the voltage on VIN falls below the
under-voltage lockout (UVLO) threshold, all
circuitry in the device is disabled, and the
internal logic is reset. Operation resumes when
VIN rises above the UVLO threshold.
Thermal Shutdown
If the die temperature exceeds the safe limits,
all MOSFETs in the H-bridge are disabled, and
nFAULT is driven low. Once the die
temperature has fallen to a safe level, operation
resumes automatically.
Over-Voltage Protection (OVP)
If the input voltage applied to VIN is higher than
the over-voltage protection (OVP) threshold, the
H-bridge output is disabled, and nFAULT is
driven low. This protection is released when
VIN drops to a safe level.
1.0MP6522 Rev. 1.02
www.MonolithicPower.com
3/21/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
10
MP6522 – 35V, 3.2A, H-BRIDGE MOTOR DRIVER
PACKAGE INFORMATION
QFN-24 (5mmx5mm)
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.
MP6522 Rev. 1.02
3/21/2019
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
11
工商网监
湘ICP备2023018690号
