MC33926 Freescale Semiconductor, MC33926 Datasheet - Page 14

• Manufacturer Part Number: MC33926
• Description: 5.0 A Throttle Control H-Bridge
• Manufacturer: Freescale Semiconductor

ANALOG CONTROL AND PROTECTION
CIRCUITRY:
internal logic. The charge pump provides gate drive for the H-
Bridge MOSFETs. The Current and Temperature sense
circuitry provides detection and protection for the output
drivers. Output undervoltage protection shuts down the
MOSFETS.
GATE CONTROL LOGIC:
primarily for any low-voltage DC servo motor control
application within the current and voltage limits stated for the
device. Two independent inputs provide polarity control of
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33926
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
FUNCTIONAL PIN DESCRIPTION
The on-chip Voltage Regulator supplies 3.3V to the
The 33926 is a monolithic H-Bridge Power IC designed
33926
INTERFACE
MCU
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
ANALOG CONTROL AND PROTECTION
CURRENT SENSE
TEMPERATURE
Figure 10. Functional Internal Block Diagram
COMMAND AND FAULT REGISTERS
SENSE
PROTECTION LOGIC CONTROL
GATE CONTROL LOGIC
PWM CONTROLLER
two half-bridge totem-pole outputs. Two independent disable
inputs are provided to force the H-Bridge outputs to tri-state
(high impedance off-state).
H-BRIDGE OUTPUT DRIVERS: OUT1 AND OUT2
from OUT1 to OUT2 is reversible and under full control of the
user by way of the Input Control Logic. The output stage is
designed to produce full load control under all system
conditions. All protective and control features are integrated
into the Control and Protection blocks. The sensors for
current and temperature are integrated directly into the
output MOSFET for maximum accuracy and dependability.
REGULATION
VOLTAGE
CHARGE
The H-Bridge is the power output stage. The current flow
PUMP
Analog Integrated Circuit Device Data
OUTPUT DRIVERS
OUT1 - OUT2
H-BRIDGE
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