TYPICAL APPLICATIONS
FUNCTIONAL PIN DESCRIPTION
TYPICAL APPLICATIONS
Figure 7 shows a typical application for the 17511A. When
applying the gate voltage to the CRES pin from an external
source, be sure to connect it via a resistor equal to, or greater
than, RG = VCRES / 0.02Ω.
5.0 V
VCRES < 14 V
NC
NC
RG > VCRES/0.02 Ω
NC
NC
RG
0.01 μF
17511A
VDD VM
C1L
C1H
C2L
C2H
CRES
GOUT
OUT1
MCU
EN
GIN
IN1
OUT2
IN2
GND
Motor
Solenoid
NC = No Connect
Figure 7. 17511A Typical Application Diagram
CEMF SNUBBING TECHNIQUES
Care must be taken to protect the IC from potentially
damaging CEMF spikes induced when commutating currents
in inductive loads. Typical practice is to provide snubbing of
voltage transients via placing a capacitor or zener at the
supply pin (VM) (see Figure 8).
5.0 V 5.0 V
17511A
VDD VM
C1L
C1H OUT1
C2L
C2H
CRES
OUT2
GND
5.0 V 5.0 V
17511A
VDD VM
C1L
C1H OUT1
C2L
C2H
CRES
OUT2
GND
Figure 8. CEMF Snubbing Techniques
Analog Integrated Circuit Device Data
Freescale Semiconductor
17511A
11