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PULSE WIDTH MODULATION AMPLIFIER
SA55
MICROTECHNOLOGY
HTTP://WWW.APEXMICROTECH.COM
(800) 546-APEX
(800) 546-2739
PRELIMINARY
FEATURES
* * * * * * * * * DELIVERS UP TO 5A CONTINUOUS OUTPUT OPERATES AT SUPPLY VOLTAGES TO 55V TTL AND CMOS COMPATIBLE INPUTS NO "SHOOT-THROUGH" CURRENT THERMAL WARNING FLAG OUTPUT AT 145 C THERMAL SHUTDOWN (OUTPUTS OFF) AT 160 C INTERNAL CLAMP DIODES SHORTED LOAD PROTECTION INTERNAL CHARGE PUMP WITH EXTERNAL BOOTSTRAP CAPABILITY
APPLICATIONS
* * * * * 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
VS 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 * TELEPHONE (520) 690-8600 * FAX (520) 888-3329 * ORDERS (520) 690-8601 * EMAIL prodlit@apexmicrotech.com
SA55
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, VS, Pin 6 VOLTAGE at Pins 3, 4, 5, 8 and 9 VOLTAGE at Bootstrap Pins (Pins 1 and 11) PEAK OUTPUT CURRENT (200mS) CONTINUOUS OUTPUT CURRENT (Note 2) POWER DISSIPATION (Note 3) POWER DISSIPATION (TA = 25C, Free Air) JUNCTION TEMPERATURE, TJ(MAX) ESD SUSCEPTIBILITY (Note 4) STORAGE TEMPERATURE, TSTG LEAD TEMPERATURE (Soldering, 10 sec.) JUNCTION TERMPERATURE, TJ VS SUPPLY VOLTAGE
ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS
60V 12V VOUT 16V 10A 5A 25W 3W 150C 1500V -40C to +150C 300C -40C to +125C +12V to +55V
SPECIFICATIONS
PARAMETER SWITCH ON RESISTANCE, RDS(ON) CLAMP DIODE FORWARD DROP, VCLAMP LOGIC LOW INPUT VOLTAGE, VIL LOGIC LOW INPUT CURRENT, IIL LOGIC HIGH INPUT VOLTAGE, VIH LOGIC HIGH INPUT CURRENT, IIH CURRENT SENSE OUTPUT CURRENT SENSE LINEARITY UNDERVOLTAGE LOCKOUT UNDERVOLTAGE LOCKOUT WARNING FLAG TEMPERATURE, TJW FLAG OUTPUT SATURATION VOLTAGE, VF(ON) FLAG OUTPUT LEAKAGE, IF(OFF) SHUTDOWN TEMPERATURE, TJSD QUIESCENT SUPPLY CURRENT, IS OUTPUT TURN-ON DELAY TIME, tDon OUTPUT TURN-ON SWITCHING TIME, ton OUTPUT TURN-OFF DELAY TIMES, tDoff OUTPUT TURN-OFF SWITCHING TIME, toff MINIMUM INPUT PULSE WIDTH, tpw CHARGE PUMP RISE TIME, tcpr TEST CONDITIONS Output Current = 5A Clamp Current = 5A Pins 3, 4, 5 VIN = -0.1V, Pins = 3, 4, 5 Pins 3, 4, 5 VIN = 12V, Pins = 3, 4, 5 IOUT = 1A 1A IOUT 5A Outputs Turn OFF Outputs Turn OFF Pin 9 0.8V, IL = 2 mA TJ = TJw, IL = 2 mA VF = 12V Outputs Turn OFF All Logic Inputs Low Sourcing Outputs, IOUT = 5A Sinking Outputs, IOUT = 5A Bootstrap Capacitor = 10 nF Sourcing Outputs, IOUT = 5A Sinking Outputs, IOUT = 5A Sourcing Outputs, IOUT = 5A Sinking Outputs, IOUT = 5A Bootstrap Capacitor = 10 nF Sourcing Outputs, IOUT = 5A Sinking Outputs, IOUT = 5A Pins 3, 4, 5 No Bootstrap Capacitor 485 6 145 0.15 0.2 160 13 300 300 100 80 200 200 75 70 1 20 MIN TYP 0.33 1.2 MAX 0.6 1.5 -0.1 0.8 -10 2 12 10 560 9 9 UNITS V V V A V V A A % V 11 C V A C mA ns ns ns ns ns ns ns ns s s
V
10 175 25
NOTE: These specifications apply for VS = 42V, unless otherwise specified.
This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications are subject to change without notice. SA55U REV.1AUGUST 1999 (c) 1999 Apex Microtechnology Corp.

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