SA03
M I C R O T E C H N O L O G Y
FEATURES
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WIDE SUPPLY RANGE—16-100V
30A CONTINUOUS TO 60°C case
3 PROTECTION CIRCUITS
ANALOG OR DIGITAL INPUTS
SYNCHRONIZED OR EXTERNAL OSCILLATOR
FLEXIBLE FREQUENCY CONTROL
MOTORS TO 4HP
REACTIVE LOADS
LOW FREQUENCY SONAR
LARGE PIEZO ELEMENTS
OFF-LINE DRIVERS
C-D WELD CONTROLLER
APPLICATIONS
12-PIN POWER DIP
PACKAGE STYLE CR
EXTERNAL CONNECTIONS
DESCRIPTION
The SA03 is a pulse width amplifier that can supply 3000W
to the load. An internal 45kHz oscillator requires no external
components. The clock input stage divides the oscillator
frequency by two, which provides the basic switching of
22.5 kHz. External oscillators may also be used to lower the
switching frequency or to synchronize multiple amplifiers.
Current sensing is provided for each half of the bridge giv-
ing amplitude and direction data. A shutdown input turns off
all four drivers of the H bridge output. A high side current
limit and the programmable low side current limit protect the
amplifier from shorts to supply or ground in addition to load
shorts. The H bridge output MOSFETs are protected from
thermal overloads by directly sensing the temperature of the
die. The 12-pin hermetic MO-127 power package occupies
only 3 square inches of board space.
BLOCK DIAGRAM AND TYPICAL APPLICATION
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
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