SGM42500 [SGMICRO]
3.6A Brushed DC Motor Driver;
| 型号： | SGM42500 |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | 3.6A Brushed DC Motor Driver |
| 文件： | 总12页 (文件大小：537K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM42500
3.6A Brushed DC Motor Driver
GENERAL DESCRIPTION
FEATURES
The SGM42500 device is a brushed DC motor driver.
This device integrates four N-MOSFETs, which can
supply up to 3.6A peak current at 40V voltage.
● H-Bridge Motor Driver
● Operating Voltage Range: 7V to 40V
● Low On-Resistance: 0.41Ω (HS + LS) at +25℃
● 3.6A Peak Output Current
The SGM42500 supports IN1/IN2 PWM interface. The
PWM signal can be implemented on the input interface
to adjust motor speed. Customer can adjust PWM
current limit or torque in real-time by VREF pin with a
controller’s DAC output or PWM signal after RC filter.
● Interface: IN1/IN2
● Adjustable PWM Current Limit in Real-Time
● Low Power Standby Mode
● Integrated Protection Features
Over-Current Protection (OCP)
Under-Voltage Lockout (UVLO)
Thermal Shutdown (TSD)
Auto-Retry
A number of protection features are provided in the
device including over-current, short-circuit, under-voltage
lockout and thermal shutdown. When the fault condition
is removed, the device automatically resumes normal
operation.
● Available in a Green SOIC-8 (Exposed Pad) Package
The SGM42500 is available in a Green SOIC-8
(Exposed Pad) package.
APPLICATIONS
Printers
Vacuum Cleaners Robotics
Industrial Pumps and Valves
TYPICAL APPLICATION
3.3V
VM
5
VM
2
0.22μF
470μF
IN2
8
OUT2
3
IN1
Controller
SGM42500
DCM
6
7
OUT1
LSS
4
VREF
DAC Output or
PWM Signal
after RC Filter
RS
Option
GND
1
Figure 1. Typical Application Circuit
SG Micro Corp
JANUARY 2023 – REV. A. 1
www.sg-micro.com
SGM42500
3.6A Brushed DC Motor Driver
PACKAGE/ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
SGM
SGM42500 SOIC-8 (Exposed Pad)
SGM42500XPS8G/TR
42500XPS8 Tape and Reel, 4000
XXXXX
-40℃ to +125℃
MARKING INFORMATION
NOTE: XXXXX = Date Code, Trace Code and Vendor Code.
X X X X X
Vendor Code
Trace Code
Date Code - Year
Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If
you have additional comments or questions, please contact your SGMICRO representative directly.
OVERSTRESS CAUTION
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed in Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to
absolute maximum rating conditions for extended periods
may affect reliability. Functional operation of the device at any
conditions beyond those indicated in the Recommended
Operating Conditions section is not implied.
Power Supply Voltage, VM ...............................................45V
IN1, IN2................................................................ -0.3V to 6V
VREF................................................................... -0.3V to 5V
LSS...................................................... ±0.5V (DC Condition)
......................................................................±2.5V (< 200ns)
Peak Output Current (Duty Cycle = 100%).....................3.6A
Package Thermal Resistance
ESD SENSITIVITY CAUTION
SOIC-8 (Exposed Pad), θJA..................................... 37℃/W
Junction Temperature .................................................+150℃
Storage Temperature Range........................-65℃ to +150℃
Lead Temperature (Soldering, 10s) ............................+260℃
ESD Susceptibility
This integrated circuit can be damaged if ESD protections are
not considered carefully. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions.
Failureto observe proper handlingand installation procedures
can cause damage. ESD damage can range from subtle
performance degradation tocomplete device failure. Precision
integrated circuits may be more susceptible to damage
because even small parametric changes could cause the
device not to meet the published specifications.
HBM.............................................................................2000V
CDM ............................................................................1000V
RECOMMENDED OPERATING CONDITIONS
Power Supply Voltage, VM ......................................7V to 40V
Logic Input PWM Frequency (IN1, IN2), fPWM ........................
...................................................................... 0kHz to 100kHz
Junction Temperature Range ......................-40℃ to +150℃
Ambient Temperature Range.......................-40℃ to +125℃
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit design, or specifications without prior notice.
SG Micro Corp
www.sg-micro.com
JANUARY 2023
2
SGM42500
3.6A Brushed DC Motor Driver
PIN CONFIGURATION
SGM42500 (TOP VIEW)
GND
IN2
1
2
3
4
8
7
6
5
OUT2
LSS
GND
IN1
OUT1
VM
VREF
SOIC-8 (Exposed Pad)
PIN DESCRIPTION
PIN
NAME
GND
IN2
TYPE
FUNCTION
1
G
I
Ground.
2
Logic Input 2.
Logic Input 1.
3
IN1
I
4
VREF
VM
I
Analog Input. Analog input to set current limit.
5
P
O
O
O
-
Supply Voltage.
6
OUT1
LSS
H-Bridge Output 1. Output of H-bridge driving stage.
Power Return. Sense resistor connection (option) or connect to power pad ground directly.
H-Bridge Output 2. Output of H-bridge driving stage.
Exposed Pad. Exposed pad for enhanced thermal dissipation.
7
8
OUT2
GND
Exposed Pad
NOTE: I: input, O: output, G: ground, P: power for the circuit.
SG Micro Corp
www.sg-micro.com
JANUARY 2023
3
SGM42500
3.6A Brushed DC Motor Driver
ELECTRICAL CHARACTERISTICS
(TJ = +25℃, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supply (VM)
Power Supply Voltage
Power Supply Current
Standby Mode Supply Current
Logic Level Inputs
VM
IVM
7
40
3
V
VM = 12V
VM = 12V
2
3
mA
µA
IVMQ
5
Input Logic Low Voltage
Input Logic High Voltage
Input Logic Hysteresis
Input Logic Low Current
Input Logic High Current
Pull-Down Resistance
Propagation Delay Time
Motor Driver Outputs (OUT1 and OUT2)
High-side FET On-Resistance
Low-side FET On-Resistance
Body Diode Forward Voltage (1)
Timing
VIL
VIH
VHYS
IIL
0.5
V
V
TJ = -40℃ to +125℃
TJ = -40℃ to +125℃
1.5
-1
350
mV
μA
μA
kΩ
μs
VIN = 0V
1
IIH
VIN = 3.3V
25
130
1.1
100
RPD
tPD
To GND
INx to OUTx change
V
M = 24V, IOUT = 0.5A
250
160
0.8
300
190
mΩ
mΩ
V
RDSON
VD
VM = 24V, IOUT = 0.5A
IOUT = 1A
Turn-On Time (2)
tON
tCOD
VREF
AV
VM > VUVLO with IN1 or IN2 high
130
400
µs
ns
Crossover Delay
VREF Input Voltage Range
VREF Voltage Gain
0
4
V
VREF/VLSS, VREF = 2.5V
IN1 = IN2 = 0V
9.2
10
12.5
1
11.3
V/V
µs
ms
Constant Off-Time
tOFF
tST
Standby Timer
1.5
Protection Circuits
VM falls until UVLO triggers
VM rises until operation recovers
Rising to falling threshold
6
6.2
200
4
6.6
6.8
VM Under-Voltage Lockout
VUVLO
V
VM Under-Voltage Hysteresis
Over-Current Protection Trip Level
Over-Current Deglitch Time
Over-Current Retry Time
VHYS
IOCP
100
mV
A
tOCP
2
μs
ms
℃
tRETRY
TSD
10
165
Thermal Shutdown Temperature
Thermal Shutdown Temperature
Hysteresis
THYS
30
℃
NOTES:
1. It is recommended that the maximum current of the body diode should be less than 1.5A.
2. tON applies when the device initially powers up, and when it exits standby mode.
SG Micro Corp
www.sg-micro.com
JANUARY 2023
4
SGM42500
3.6A Brushed DC Motor Driver
PWM CONTROL TIMING DIAGRAM
VIN1
IN1
GND
VIN2
IN2
GND
+IREG
IOUT(x)
0A
-IREG
Forward/
Reverse/
Forward/
Reverse/
Fast Decay
Fast Decay
Slow Decay
Slow Decay
TRUTH TABLE
Table 1. SGM42500 PWM Control Truth Table
IN1
0
IN2
1
OUT1
OUT2
Function
L
H
L
H
L
L
Reverse
Forward
1
0
1
1
Brake (Slow Decay)
Coast, enter in the low power standby mode after 1ms.
It will be a fast decay that discharges through the body diode.
0
0
Z
Z
NOTE: Z = high-impedance.
Table 2. SGM42500 PWM Decay Logic
IN1
PWM
PWM
1
IN2
1
Decay Logic
Slow Decay
Fast Decay
Slow Decay
Fast Decay
0
PWM
PWM
0
The inputs can also be used for PWM control, for example, the speed of a DC motor. The PWM signal can be
applied to IN1 or IN2 pin.
If one input is set to high and the other input is set to PWM, the decay mode is slow decay. When IN1 is high and IN2
is PWM, the motor is running forward. When IN2 is high and IN1 is PWM, the motor is running reverse.
If one input is set to PWM and the other input is set to low, the decay mode is fast decay. When IN1 is PWM and IN2
is low, the motor is running forward. When IN2 is PWM and IN1 is low, motor is running reverse.
SG Micro Corp
www.sg-micro.com
JANUARY 2023
5
SGM42500
3.6A Brushed DC Motor Driver
FUNCTIONAL BLOCK DIAGRAM
VM
OTP
Charge
Pump
Regulator
UVLO
GND
EP
HS/LS OC
VM
VM
OUT1
OUT2
DCM
Pre-
Driver
IN1
IN2
Logic
LSS
÷ 10
VREF
SGM42500
Figure 2. SGM42500 Functional Block Diagram
SG Micro Corp
JANUARY 2023
www.sg-micro.com
6
SGM42500
3.6A Brushed DC Motor Driver
TYPICAL PERFORMANCE CHARACTERISTICS
RDSON vs. Temperature
VREF Voltage Gain vs. VREF Voltage
1.6
1.4
1.2
1.0
0.8
0.6
12.0
11.4
10.8
10.2
9.6
DC
TJ = +25℃
IOUT = 0.5A
9.0
-50
-25
0
25
50
75
100 125
1
1.5
2
2.5
3
3.5
4
Ambient Temperature (℃)
VREF Voltage (V)
Standby Mode Supply Current vs. Power Supply Voltage
6
TJ = +25℃
5
4
3
2
1
5
10
15
20
25
30
35
40
Power Supply Voltage (V)
SG Micro Corp
www.sg-micro.com
JANUARY 2023
7
SGM42500
3.6A Brushed DC Motor Driver
DETAILED DESCRIPTION
Device Operation
VREF
The SGM42500 is typically used to drive a DC motor.
An internal charge pump generates the necessary
gate-drive voltage. The SGM42500 operates from 7V to
40V motor power supply, which can supply a 3.6A peak
current. Full protection features include over-current
protection, under-voltage lockout and over-temperature
protection.
The current limit is decided by VREF and RS together,
please refer to Equation 1:
VREF
ITRIPMAX
=
(1)
10×RS
Over-Current Protection (OCP)
Each MOSFET is protected by its own preset
over-current limit. In case of an over-current (any
direction), the whole bridge will be disabled (shutdown),
and the device will retry after tRETRY. An over-current will
occur due to a short between a switching node and
ground, VM supply line, or the other node of the bridge
(a winding short).
Standby Mode
For SGM42500, if both input pins (IN1/IN2) are low for
longer than 1ms, the device will go to standby mode. If
entering the standby mode, the output MOSFET,
charge pump, and regulator are turned off for saving
power.
Under-Voltage Lockout (UVLO)
Internal PWM Current Control
If the voltage on VM pin falls below its under-voltage
lockout threshold, the device will be disabled. The
device resumes operation when the power supply goes
back above UVLO thresholds.
The current in the output is limited using fixed off-time
control circuitry. If the motor current goes over the
current limit setting, the two low-side MOSFETs are
both turned on for tOFF time, slow decay mode is used
to adjust the current.
Thermal Shutdown (TSD)
The driver is shutdown if a junction over-temperature
occurs in the device. Once the temperature goes back
to the safe level, the device resumes its operation.
SG Micro Corp
www.sg-micro.com
JANUARY 2023
8
SGM42500
3.6A Brushed DC Motor Driver
APPLICATION INFORMATION
Sense Pin (LSS)
Ground and Layout Guidelines
The power supply VM is suggested to be decoupled
with a bulk capacitor in parallel with a lower value
ceramic capacitor placed as close as practicable to the
device.
If PWM current control is used, it is recommended to
place a low-value resistor between the LSS and GND
pins for current sensing. In order to detect the output
current, the ground trace IR drop should be minimized.
Surface mounted and low inductance sense resistor is
recommended. It is necessary to consider the package,
since I2 × R heat is generated in the sense resistor. And
during PCB layout, place the resistor near to the motor
driver as close as possible.
The exposed pad on the bottom of the device provides
a path for heat dissipation. The pad should be soldered
directly to an exposed surface on the PCB board to
achieve better thermal performance. Thermal vias are
also helpful to dissipate the heat.
Ensure that the maximum voltage of LSS (±500mV) is
not exceeded at the maximum load, and select the
appropriate resistance value. This rating may be
exceeded for a short time during an over-current event.
It is good to have a low impedance single-point ground,
known as a star ground, which is located close to the
SGM42500. The copper ground plane located under
the device thermal pad is typically used as the star
ground.
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
JANUARY 2023 ‒ REV.A to REV.A.1
Page
Updated Electrical Characteristics section...........................................................................................................................................................4
Changes from Original (OCTOBER 2022) to REV.A
Page
Changed from product preview to production data.............................................................................................................................................All
SG Micro Corp
www.sg-micro.com
JANUARY 2023
9
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
SOIC-8 (Exposed Pad)
D
e
3.22
E1
E
E2
2.33 5.56
1.91
b
D1
1.27
0.61
RECOMMENDED LAND PATTERN (Unit: mm)
L
ccc
C
A2
A
SEATING PLANE
A1
c
θ
C
Dimensions
In Millimeters
Symbol
MIN
MOD
MAX
1.700
0.150
1.650
0.510
0.250
5.100
3.420
4.000
6.200
2.530
A
A1
A2
b
0.000
1.250
0.330
0.170
4.700
3.020
3.800
5.800
2.130
-
-
-
c
-
D
-
D1
E
-
-
E1
E2
e
-
-
1.27 BSC
L
0.400
0°
-
-
1.270
8°
θ
ccc
0.100
NOTES:
1. This drawing is subject to change without notice.
2. The dimensions do not include mold flashes, protrusions or gate burrs.
3. Reference JEDEC MS-012.
SG Micro Corp
TX00013.003
www.sg-micro.com
PACKAGE INFORMATION
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
P2
P0
W
Q2
Q4
Q2
Q4
Q2
Q4
Q1
Q3
Q1
Q3
Q1
Q3
B0
Reel Diameter
P1
A0
K0
Reel Width (W1)
DIRECTION OF FEED
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF TAPE AND REEL
Reel Width
Reel
Diameter
A0
B0
K0
P0
P1
P2
W
Pin1
Package Type
W1
(mm)
(mm) (mm) (mm) (mm) (mm) (mm) (mm) Quadrant
SOIC-8
(Exposed Pad)
13″
12.4
6.40
5.40
2.10
4.0
8.0
2.0
12.0
Q1
SG Micro Corp
TX10000.000
www.sg-micro.com
PACKAGE INFORMATION
CARTON BOX DIMENSIONS
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF CARTON BOX
Length
(mm)
Width
(mm)
Height
(mm)
Reel Type
Pizza/Carton
13″
386
280
370
5
SG Micro Corp
www.sg-micro.com
TX20000.000
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