SA303 Datasheet, PDF (8/14 Pages) Cirrus Logic – 3 Phase Switching Amplifier

SA303
Product Innova tionFrom
Figure 4. System Diagram
V_DD
SC
TEMP
I_LIM/D IS 1
Current ^Ia
monitor ^Ib
Signals Ic
Fault
Logic
Vs (phase A)
Vs +
Vs (phase B&C)
GND
D IS 2
At
Ab
PWM B t
Signals _{B b}
Ct
Cb
SGND
M icrocontroller
or DSC
BRUSHLESS
MOTOR
Control
Gate
A
Logic
Control
B
OUT A
OUT B
C
OUT C
SA303 Switching Amplifier
PGND (A&B)
SGND
Sensing
circuits
PGND (C)
GND
Sensor – Hall Sensors
or
Sensorless – Input from Stator leads

SA303U