PULSE WIDTH MODULATION AMPLIFIER SA55 M I C R O T E C H N O L O G Y 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 BLOCK DIAGRAM 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. THERMAL FLAG OUTPUT BOOTSTRAP 1 THERMAL SENSING ILIM PWM DIRECTION UNDER VOLTAGE LOCKOUT CHARGE PUMP DRIVE VS BOOTSTRAP 2 CURRENT SENSING CHARGE PUMP DRIVE OUTPUT 1 CURRENT SENSE OUT OUTPUT 2 BRIDGE DRIVER BRAKE GROUND APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL [email protected] ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS 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 = 25°C, Free Air) JUNCTION TEMPERATURE, TJ(MAX) ESD SUSCEPTIBILITY (Note 4) STORAGE TEMPERATURE, TSTG LEAD TEMPERATURE (Soldering, 10 sec.) JUNCTION TERMPERATURE, TJ VS SUPPLY VOLTAGE 60V 12V VOUT ±16V 10A 5A 25W 3W 150°C 1500V –40°C to +150°C 300°C –40°C to +125°C +12V to +55V SPECIFICATIONS PARAMETER TEST CONDITIONS SWITCH ON RESISTANCE, RDS(ON) CLAMP DIODE FORWARD DROP, VCLAMP LOGIC LOW INPUT VOLTAGE, VIL Output Current = 5A Clamp Current = 5A Pins 3, 4, 5 LOGIC LOW INPUT CURRENT, IIL LOGIC HIGH INPUT VOLTAGE, VIH VIN = –0.1V, Pins = 3, 4, 5 Pins 3, 4, 5 LOGIC HIGH INPUT CURRENT, IIH CURRENT SENSE OUTPUT VIN = 12V, Pins = 3, 4, 5 IOUT = 1A 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 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 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 MIN TYP MAX UNITS 0.33 1.2 0.6 1.5 –0.1 0.8 –10 2 12 10 560 Ω V V V µA V V µA µA ±9 9 % V 11 °C V µA °C mA ns ns 485 ±6 145 0.15 0.2 160 13 300 300 10 175 25 100 80 200 200 ns ns ns ns 75 70 1 20 ns ns µs µs V 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 © 1999 Apex Microtechnology Corp.