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DC AND STEPPER MOTOR DRIVES
POSITION AND VELOCITY SERVOMECHANISMS
FACTORY AUTOMATION ROBOTS
NUMERICALLY CONTROLLED MACHINERY
COMPUTER PRINTERS AND PLOTTERS
DESCRIPTION
The SA55 is a 5A H-Bridge designed for motion control
applications. The device is built using a multi-technology
process which combines bipolar and CMOS control circuitry
with DMOS power devices on the same monolithic structure.
Ideal for driving DC and stepper motors; the SA55 accomodates
peak output currents up to 10A. An innovative circuit which
facilitates low-loss sensing of the output current has been
implemented.
BLOCK DIAGRAM
THERMAL
FLAG
OUTPUT BOOTSTRAP 1
V
S
BOOTSTRAP 2
THERMAL
SENSING
ILIM
UNDER
VOLTAGE
LOCKOUT
CHARGE
PUMP
DRIVE
CURRENT
SENSING
CHARGE
PUMP
DRIVE
OUTPUT 1
CURRENT
SENSE OUT
OUTPUT 2
PWM
DIRECTION
BRAKE
BRIDGE
DRIVER
GROUND
APEX MICROTECHNOLOGY CORPORATION
鈥?TELEPHONE (520) 690-8600 鈥?FAX (520) 888-3329 鈥?ORDERS (520) 690-8601 鈥?EMAIL prodlit@apexmicrotech.com
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