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
V
than, RG
=
C
/0.02 Ω.
RES
5.0 V
17511A
VDD VM
GOUT
V
NC C1L
CRES < 14 V
NC C1H
NC C2L
NC C2H
V
RG
> CRES/0.02 Ω
CRES
OUT1
0.01 µF
RG
Motor
EN
Solenoid
GIN
IN1
IN2
OUT2
GND
MCU
NC = No Connect
Figure 7. 17511A Typical Application Diagram
CEMF SNUBBING TECHNIQUES
5.0 V
5.0 V
5.0 V
5.0 V
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).
17511A
17511A
VM
V
DD
VM
V
DD
C1L
C1H
C2L
C2H
C1L
C1H
C2L
C2H
OUT1
OUT1
CRES
CRES
OUT2
OUT2
GND
GND
Figure 8. CEMF Snubbing Techniques
17511A
Analog Integrated Circuit Device Data
Freescale Semiconductor
11
FREESCALE [ Freescale ]
