MC33937 Datasheet, PDF (1/48 Pages) Freescale Semiconductor, Inc – Three Phase Field Effect Transistor Pre-driver

Freescale Semiconductor
Advance Information
Document Number: MC33937
Rev. 8.0, 8/2012
Three Phase Field Effect
Transistor Pre-driver
33937A
The 33937A is a field effect transistor (FET) pre-drivers designed
for three phase motor control and similar applications. The integrated
circuit (IC) uses SMARTMOS technology.
The IC contains three high side FET pre-drivers and three low side
FET pre-drivers. Three external bootstrap capacitors provide gate
charge to the high side FETs.
The IC interfaces to a MCU via six direct input control signals, an
SPI port for device setup and asynchronous reset, enable and
interrupt signals. Both 5.0 and 3.0 V logic level inputs are accepted
and 5.0 V logic level outputs are provided.
Features
• Fully specified from 8.0 to 40 V covers 12 and 24 V automotive
systems
• Extended operating range from 6.0 to 58 V covers 12 and 42 V
systems
• Greater than 1.0 A gate drive capability with protection
• Protection against reverse charge injection from CGD and CGS of
external FETs
• Includes a charge pump to support full FET drive at low battery
voltages
• Dead time is programmable via the SPI port
• Simultaneous output capability enabled via safe SPI command
THREE PHASE PRE-DRIVER
EK SUFFIX (Pb-FREE)
98ASA99334D
54-PIN SOICW-EP
ORDERING INFORMATION
Device
(Add R2 Suffix for
Tape and Reel)
Temperature
Range (T_A)
Package
MC33937APEK
-40 to 135 C 54 SOICW-EP
See document MC33937 Rev. 6.0 for MCZ33937EK
specification.
V_SYS
MCU
OR
DSP
33937
VPUMP
PUMP
VPWR
VLS
VSUP
PA_HS_G
PB_HS_G
PC_HS_G
VDD
PA_HS_S
VSS
PB_HS_S
PC_HS_S
3
3
PX_HS
PX_LS
3
PHASEX
PA_LS_G
CS
PB_LS_G
SI
PC_LS_G
SCLK
SO
PX_LS_S
RST
INT
EN1
EN2
AMP_P
AMP_N
GND AMP_OUT
R_SEN
Figure 1. 33937A Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2011-2012. All rights reserved.