TYPICAL APPLICATIONS
PROTECTION AND DIAGNOSIS FEATURES
TYPICAL APPLICATIONS
V
SYS
+12V Nom.
To Other
Two Phases
C6
D1
D2
C2
C1
PUMP
VPWR
VSUP
VPUMP
Main
Charge
Pump
Trickle
Charge
Pump
Hold
-Off
Circuit
PGND
5V
Reg.
VDD
VLS
Reg.
VLS
Oscillator
C3
VDD
C4
UV
Detect
3 x
T-Lim
Px_BOOT
Px_HS_G
Q
HS
C
RST
x_Boot
R
High
-Side
INT
EN1
EN2
g_HS
VSUP
(Optional)
Driver
Control
Logic
+
1.4V
-
Desat.
Comp.
3
3
Px_HS
Px_LS
Phase x
Output
To Motor
Px_HS_S
CS
SI
Q
SCLK
SO
LS
Low
-Side
R
g_LS
Phase
Comp.
VSUP
3
PHASE_x
Px_LS_G
Px_LS_S
(Optional)
Driver
Phase
Return
OC_OUT
GND
I-sense
Amp.
Over-Cur.
Comp.
R1
R2
R
Sense
AMP_OUT
AMP_P
R3
OC_TH
VLS_CAP
C5
AMP_N
+
-
+
-
R
fb
To ADC
Figure 22. Typical Application Diagram Using Charge Pump (+12 V Battery System)
33937
Analog Integrated Circuit Device Data
Freescale Semiconductor
41
FREESCALE [ Freescale ]
