SA51 Datasheet, PDF (1/4 Pages) Cirrus Logic – H/BRIDGE MOTOR DRIVER/AMPLIFIER

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FEATURES
• LOW COST COMPLETE H-BRIDGE
• SELF-CONTAINED SMART LOWSIDE/HIGHSIDE DRIVE
CIRCUITRY
• SINGLE SUPPLY OPERATION
• WIDE SUPPLY RANGE: UP TO 80V
• 5A CONTINUOUS OUTPUT
• HERMETIC SEALED PACKAGE
• HIGH EFFICIENCY: 95%
• FOUR QUADRANT OPERATION, TORQUE
CONTROL CAPABILITY
APPLICATIONS
• BRUSH TYPE MOTOR CONTROL
• CLASS D SWITCHMODE AMPLIFIER
• REACTIVE LOADS
• MAGNETIC COILS (MRI)
• ACTIVE MAGNETIC BEARING
• VIBRATION CANCELLING
DESCRIPTION
The SA51 is a pulse width modulation amplifier that can sup-
ply 5A continuous current to the load. The full bridge amplifier
can be operated over a wide range of supply voltages. All of
the drive/control circuitry for the lowside and highside switches
are internal to the hybrid. The user provides a TTL compatible
PWM signal for simultaneous amplitude and direction control
in four quadrant mode. The internal circuitry will provide proper
deadtime protection for each half bridge. All N-channel FETs
mean the best efficiency for the size, both in terms of on-re-
sistance and switching capability. For an idle/sleep mode or
for fault protection, a TTL compatible disable pin is provided
so as to shut down all four transistors. The SA51 is packaged
in a space efficient isolated 8-pin TO-3 that can be directly
connected to a heatsink.
BLOCK DIAGRAM
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TYPICAL APPLICATION
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8-PIN TO-3
PACKAGE STYLE CE
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EXTERNAL CONNECTIONS
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APEX MICROTECHNOLOGY CORPORATION • TELEPHONE [phone] • FAX [phone] • ORDERS [phone] • EMAIL [e-mail]
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