12V DC Motor Control with BTN8982TA for one uni-directional DC brushed motor

Open online SPICE simulator circuit link: motor_brushed_12V_half-bridge_BTN8982TA.tsc


DC Motor Control with BTN8982TA (Half-Bridge)

{1. click here to set circuit parameters}
{2. click on "Run" to calculate components}
{3. click on "OK" and Simulate Transient }

{Supply voltage [V]}
VS:= 12 {use 8 ... 18}

{DC Motor parameters}
motor_J:=4.7E-7 {moment of inertia [kgm2] }
motor_k:=8.5m {motor constant [Nm/A] }
motor_D:=0 {ideal friction coefficient}
motor_R:=3.25 {motor resistance [Ohm] }
motor_L:=5m {motor inductance [H] }

{DO NOT Change! max. allowed speed in [rpm] }
max_speed:=VS/motor_k*60/2/pi
max_speed=[13.4814k]

speed:=8000 {ideal free running speed [rpm] }
{angular velocity w [rad/s] = speed*2*pi/60}
w:=speed*2*pi/60
w=[837.758]

{switching frequency [Hz] }
fs:= 1000 {use 100 ... 30000}

{Ambiente temperature [Celsius] }
Tamb:=50 {use 0 ... 120}

{===DO NOT CHANGE BELOW========}
Veff:=w*motor_k
Duty:=Veff/VS
Duty=[593.4119m]
T:=1/fs
T_ON:= Duty*T {on time}
T_OFF:=T-T_ON {off time}

ControlT2:=T_ON
ControlT4:=T_OFF

The BTN8982TA motor control device with half-bridge topology is one
of the high current motor control chips. The circuit demonstrate an
example circuit to drive one uni-directional DC motors (half bridge
configuration). The implemented integrated BTN8982TA NovalithIC™
half bridges can be controlled by a PWM via the IN Pin.

The DC motor parameters can be adjusted in the green text box on the
left side to simulate your individual motor control case.


Technical Assistance

Other circuits
Application Note: DC-MOTORCONTR_BTN8982
Application Note: NovalithIC™ half-bridge family BTN89xy

Product info: BTN8982TA