Apex SA55 Datasheet

PULSE WIDTH MODULATION AMPLIFIER

MICROTECHNOLOGY

HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX (800) 546-2739

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

SA55

PRELIMINARY

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

ILIM

PWM

DIRECTION

BRAKE

THERMAL FLAG OUTPUT

THERMAL SENSING

UNDER VOLTAGE LOCKOUT

BRIDGE DRIVER

BOOTSTRAP 1

CHARGE PUMP DRIVE

CURRENT SENSING

GROUND

BOOTSTRAP 2

CHARGE PUMP DRIVE

OUTPUT 1 CURRENT

SENSE OUT OUTPUT 2

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SA55

ABSOLUTE MAXIMUM RATINGS

SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

SUPPLY VOLTAGE, VS, Pin 6 60V VOLTAGE at Pins 3, 4, 5, 8 and 9 12V VOLTAGE at Bootstrap Pins (Pins 1 and 11) V PEAK OUTPUT CURRENT (200mS) 10A

OUT

±16V

CONTINUOUS OUTPUT CURRENT (Note 2) 5A POWER DISSIPATION (Note 3) 25W POWER DISSIPATION (T JUNCTION TEMPERATURE, T ESD SUSCEPTIBILITY (Note 4) 1500V STORAGE TEMPERATURE, T LEAD TEMPERATURE (Soldering, 10 sec.) 300°C JUNCTION TERMPERATURE, T VS SUPPLY VOLTAGE +12V to +55V

= 25°C, Free Air) 3W

J(MAX)

STG

150°C –40°C to +150°C –40°C to +125°C

SPECIFICATIONS

PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

SWITCH ON RESISTANCE, RDS(ON) Output Current = 5A 0.33 0.6 Ω CLAMP DIODE FORWARD DROP, V LOGIC LOW INPUT VOLTAGE, V

LOGIC LOW INPUT CURRENT, I LOGIC HIGH INPUT VOLTAGE, V

LOGIC HIGH INPUT CURRENT, I CURRENT SENSE OUTPUT I

CLAMP

CURRENT SENSE LINEARITY 1A ≤ I UNDERVOLTAGE LOCKOUT Outputs Turn OFF 9 V UNDERVOLTAGE LOCKOUT Outputs Turn OFF 11 V WARNING FLAG TEMPERATURE, T FLAG OUTPUT SATURATION VOLTAGE, VF(ON) TJ = TJw, IL = 2 mA 0.15 V

FLAG OUTPUT LEAKAGE, IF(OFF) VF = 12V 0.2 10 µA SHUTDOWN TEMPERATURE, T QUIESCENT SUPPLY CURRENT, I OUTPUT TURN-ON DELAY TIME, t

OUTPUT TURN-ON SWITCHING TIME, t

OUTPUT TURN-OFF DELAY TIMES, t OUTPUT TURN-OFF SWITCHING TIME, t

MINIMUM INPUT PULSE WIDTH, t CHARGE PUMP RISE TIME, t

JSD

S Don

Doff

off

cpr

Clamp Current = 5A 1.2 1.5 V Pins 3, 4, 5 –0.1 V

0.8 V VIN = –0.1V, Pins = 3, 4, 5 –10 µA Pins 3, 4, 5 2 V

12 V

VIN = 12V, Pins = 3, 4, 5 10 µA

= 1A 485 560 µA

OUT

≤ 5A ±6 ±9%

OUT

Pin 9 ≤ 0.8V, IL = 2 mA 145 °C

Outputs Turn OFF 160 175 °C All Logic Inputs Low 13 25 mA Sourcing Outputs, I Sinking Outputs, I Bootstrap Capacitor = 10 nF Sourcing Outputs, I Sinking Outputs, I Sourcing Outputs, I Sinking Outputs, I Bootstrap Capacitor = 10 nF Sourcing Outputs, I Sinking Outputs, I Pins 3, 4, 5 1 µs

= 5A 300 ns

OUT

= 5A 300 ns

OUT

= 5A 100 ns

OUT

= 5A 80 ns

OUT

= 5A 200 ns

OUT

= 5A 200 ns

OUT

= 5A 75 ns

OUT

= 5A 70 ns

OUT

No Bootstrap Capacitor 20 µs

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.