DRV8301DCAR Detailed explanation of pin function specifications and circuit principle instructions
The part number "DRV8301DCAR" corresponds to a motor driver IC from Texas Instruments (TI), specifically the DRV8301 series. This IC is used for controlling three-phase brushless DC (BLDC) motors and features integrated gate drivers for MOSFETs , along with various protection mechanisms and control features.
Let's break down the requested information step by step.
1. Pin Function Specifications for DRV8301DCAR
Package:
DRV8301DCAR comes in a
QFN-48 package (48 pins).
2. Pinout Function Table for DRV8301DCAR
Pin Number
Pin Name
Pin Function Description
1
VCPH
High-side charge pump output voltage for the top MOSFET gate driver.
2
VCPH
High-side charge pump output voltage for the top MOSFET gate driver.
3
DRVH
Gate driver output for high-side MOSFET.
4
DRVL
Gate driver output for low-side MOSFET.
5
GND
Ground connection.
6
VDS
Output drain voltage for the MOSFETs.
7
VREG
Regulated voltage output for the internal circuitry.
8
REF
Reference input for voltage regulation.
9
VS
Sensing input for the high-side current.
10
IN1
Input for PWM signal to control phase 1 of the motor.
11
IN2
Input for PWM signal to control phase 2 of the motor.
12
IN3
Input for PWM signal to control phase 3 of the motor.
13
FAULT
Fault output signal.
14
VDC
Power supply voltage input.
15
SD
Shutdown input pin. High signal to disable operation.
16
DRVL
Low-side gate driver output for the motor.
17
OVP
Over-voltage protection input. If voltage exceeds this value, fault condition is triggered.
18
TACH
Tachometer input for speed feedback control.
19
LSEN
Low-side current sense input for phase current measurement.
20
HSEN
High-side current sense input for phase current measurement.
21
ISET
Set point input for the current limit.
22
MOD
Mode select input pin for different operation modes.
23
CP1
Charge pump
capacitor 1.
24
CP2
Charge pump capacitor 2.
25
DRVH
High-side MOSFET driver output.
26
GND
Ground connection for gate driver.
27
N/C
Not connected pin.
28
VCP
Charge pump output voltage for high-side gate driver.
29
VREG
Internal voltage regulator output.
30
GND
Ground connection.
31
ISENSE
Current sensing input for phase current.
32
PWM1
PWM signal input for phase 1 of motor control.
33
PWM2
PWM signal input for phase 2 of motor control.
34
PWM3
PWM signal input for phase 3 of motor control.
35
CT1
Capacitor pin 1 for input filter.
36
CT2
Capacitor pin 2 for input filter.
37
VBAT
Input battery voltage for the motor.
38
VREG
Regulated voltage for internal circuitry.
39
GND
Ground pin for signal reference.
40
VCPH
High-side charge pump output voltage for MOSFET gate driver.
41
FAULT
Output for any fault condition detected in the device.
42
VCP
High-side charge pump output.
43
VDS
Drain-source voltage sensing for protection.
44
COM
Common connection for signal and reference ground.
45
GND
Ground pin for the IC.
46
N/C
Not connected pin.
47
PWR
Power supply voltage input.
48
GND
Ground pin for the device.
3. Pin Function Details
Gate Driver Outputs: Pins
DRVH and
DRVL control the high-side and low-side MOSFETs for three-phase motor drive.
Current Sensing: Pins
LSEN and
HSEN monitor the current in the motor phases for protection and control.
Fault Pin: The
FAULT pin indicates a fault condition, such as overcurrent or thermal shutdown.
Control Inputs: Pins
IN1,
IN2, and
IN3 control the phase motor drive by receiving PWM input signals.
Shutdown and Protection: The
SD pin is used to disable the device.
OVP pin triggers fault in case of overvoltage condition.
Power Inputs: VDC provides the main supply voltage to the motor driver, and
VREG regulates internal circuitry.
4. FAQ Section
**Q: What is the function of the DRV8301DCAR's