33937_09 Datasheet, PDF (41/48 Pages) Freescale Semiconductor, Inc – Three Phase Field Effect Transistor Pre-driver

TYPICAL APPLICATIONS
PROTECTION AND DIAGNOSIS FEATURES
TYPICAL APPLICATIONS
VSYS _{+12V Nom.}
D1
D2
C1
PUMP
C2
VPWR
C6
VSUP
VPUMP
PGND
Main
Charge
Pump
5V
Reg.
VDD
VLS
Reg.
Trickle
Charge
Pump
Oscillator
RST
INT
EN1
EN2
Px_HS
Px_LS
CS
SI
SCLK
SO
PHASE_x
OC_OUT
GND
UV _{3 x}
Detect
T-Lim
VSUP
High
-Side
3
Control
Desat.
Comp.
+
1._-4V
Driver
3
Logic
3
Over-Cur.
Comp.
OC_TH
+
-
I-sense
Amp.
AMP_OUT
AMP_N
Phase VSUP
Comp.
Low
-Side
Driver
AMP_P
VLS_CAP
C5
Rfb
To ADC
Hold
-Off
Circuit
VLS
C3
VDD
C4
Px_BOOT
Px_HS_G
Cx_Boot
Rg_HS
(Optional)
Px_HS_S
Px_LS_G
Rg_LS
(Optional)
Px_LS_S
R1
R3
R2
+
-
To Other
Two Phases
QHS
Phase x
Output
To Motor
QLS
Phase
Return
RSense
Figure 22. Typical Application Diagram Using Charge Pump (+12 V Battery System)
Analog Integrated Circuit Device Data
Freescale Semiconductor
33937
41