33937_09 Datasheet, PDF (3/48 Pages) Freescale Semiconductor, Inc – Three Phase Field Effect Transistor Pre-driver

INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
PUMP
VPWR
VSUP
VPUMP
PGND
MAIN
CHARGE
PUMP
OSCILLATOR
5.0 V
REG.
VDD
VLS
REG.
TRICKLE
CHARGE
PUMP
HOLD
-OFF
CIRCUIT
RST
INT
EN1
EN2
PX_HS
PX_LS
CS
SI
SCLK
SO
PHASEX
OC_OUT
GND(2)
3
3
3
+
-
OVER-CUR.
COMP.
CONTROL
LOGIC
+
-
I-SENSE
AMP.
UV
DETECT
3X
T-LIM
VSUP
+
DESAT.
COMP
1.4
-
V
+
-
HIGH
SIDE
DRIVER
+
-
PHASE
COMP.
VSUP
LOW
SIDE
DRIVER
VSS OC_TH AMP_OUT AMP_N AMP_P
VLS_CAP
VLS
VDD
PX_BOOT
PX_HS_G
PX_HS_S
PX_LS_G
PX_LS_S
Figure 2. 33937 Simplified Internal Block Diagram
Analog Integrated Circuit Device Data
Freescale Semiconductor
33937
3