MSA260 APEX | Alldatasheet

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Technical content

APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com

FEATURES

  • LOW COST
  • HIGH VOLTAGE - 450 VOLTS
  • HIGH OUTPUT CURRENT - 20 AMPS
  • 9kW OUTPUT CAPABILITY
  • VARIABLE SWITCHING FREQUENCY
  • IGBT FULL BRIDGE OUTPUT

APPLICATIONS

  • BRUSH MOTOR CONTROL
  • MRI
  • MAGNETIC BEARINGS
  • CLASS D SWITCHMODE AMPLIFIER

DESCRIPTION

The MSA260 is a surface mount constructed PWM amplifier that provides a cost effective solution in many industrial applica- tions. The MSA260 offers outstanding performance that rivals many much more expensive hybrid components. The MSA260 is a complete PWM amplifier including an oscillator, comparator, error amplifier, current limit comparators, 5V reference, a smart controller and a full bridge IGBT output circuit. The switching frequency is user programmable up to 50 kHz. The MSA260 is built on a thermally conductive but electrically insulating substrate that can be mounted to a heatsink. EQUIVALENT CIRCUIT DIAGRAM 58-PIN DIP PACKAGE STYLE KC TYPICAL APPLICATION TORQUE MOTOR CONTROL With the addition of a few external components the MSA260 becomes a motor torque controller. In the MSA260 the source terminal of each low side IGBT driver is brought out for current sensing via R SA and R SB. A1 is a differential amplifier that amplifies the difference in currents of the two half bridges. This signal is fed into the internal error amplifier that mixes the cur- rent signal and the control signal. The result is an input signal to the MSA260 that controls the torque on the motor. EXTERNAL CONNECTIONS VIEW FROM COMPONENT SIDE ROSC RRAMP SINGLE POINT GND C3C1 C2

APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739 ABSOLUTE MAXIMUM RATINGS SPECIFICATIONSMSA260 SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS PARAMETER TEST CONDITIONS1 MIN TYP MAX UNITS ERROR AMPLIFIER OFFSET VOLTAGE Full temperature range 9 mV BIAS CURRENT Full temperature range 500 nA OFFSET CURRENT Full temperature range 150 nA COMMON MODE VOLTAGE RANGE Full temperature range 0 4 V SLEW RATE Full temperature range 1 V/µS OPEN LOOP GAIN RL = 2KΩ 96 dB UNITY GAIN BANDWIDTH 1 MHz CLOCK LOW LEVEL OUTPUT VOLTAGE Full temperature range 0.2 V HIGH LEVEL OUTPUT VOLTAGE Full temperature range 4.8 V RISE TIME 7 nS FALL TIME 7 nS BIAS CURRENT, pin 22 Full temperature range 0.6 µA 5V REFERENCE OUTPUT VOLTAGE 4.85 5.15 V LOAD CURRENT 2 mA OUTPUT4 VCE(ON), each active IGBT ICE = 15A 2.25 V CURRENT, continuous VS = 400V, F = 22kHz 20 A CURRENT, peak 1mS, VS = 400V, F = 22kHz 30 A FLYBACK DIODE CONTINUOUS CURRENT 20 A FORWARD VOLTAGE I F = 15A 1.5 V REVERSE RECOVERY IF = 15A 150 nS POWER SUPPLY VOLTAGE, VS 5 400 450 V VOLTAGE, VCC 14 15 16 V CURRENT, VS, quiescent 22kHz switching 9 28 mA CURRENT, VCC, quiescent 22kHz switching 18 mA CURRENT, VCC, shutdown 10 mA THERMAL RESISTANCE, DC, junction to case Full temperature range 1 °C/W RESISTANCE, junction to air Full temperature range 14 °C/W TEMPERATURE RANGE, case -40 85 °C/W SUPPLY VOLTAGE, VS 450V SUPPLY VOLTAGE, VCC 16V OUTPUT CURRENT, peak 30A, within SOA POWER DISSIPATION, internal, DC 250W 3 SIGNAL INPUT VOLTAGES 5.4V TEMPERATURE, pin solder, 10s 225°C TEMPERATURE, junction2 150°C TEMPERATURE RANGE, storage -40° to 105°C OPERATING TEMPERATURE, case -40° to 85°C NOTES: 1. Unless otherwise noted: T C=25°C, VCC = 15V, VS = 400V, F = 22kHz. 2. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to achieve high MTBF. 3. Each of the two output transistors on at any one time can dissipate 125W. 4. Maximum specification guaranteed but not tested.

APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com TYPICAL PERFORMANCE GRAPHS MSA260

APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com 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. MSA260U REV B JULY 2004 © 2004 Apex Microtechnology Corp. OPERATING CONSIDERATIONS MSA260 CALCULATING INTERNAL POWER DISSIPATION Detailed calculation of internal power dissipation is complex but can be approximated with simple equations. Conduction loss is given by: W = I * 2.5 + I2 * 0.095 where I = output current Switching loss is given by: W = 0.00046 * I * Vsupply * Fswitching Combine these two losses to obtain total loss. Calculate heatsink ratings and case temperatures as would be done for a linear amplifier. For calculation of junction temperatures, assume half the loss is dissipated in each of two switches: Tj = Ta + Wtotal * RØhs + 1/2Wtotal * RØjc, where: RØhs = heatsink rating RØjc = junction-to-case thermal resistance of the MSA260. The SOA typical performance graphs below show perfor - mance with the MSA260 mounted with thermal grease on the Apex HS26. The Free Air graph assumes vertical orientation of the heatsink and no obstruction to air flow in an ambient temperature of 30°C. The other two graphs show performance with two levels of forced air. Note that air velocity is given in linear feet per minute. As fans are rated in cubic delivery capability, divide the cubic rating by the square area this air flows through to find velocity. As fan delivery varies with static pressure, these calculations are approximations, and heatsink ratings vary with amount of power dissipated, there is no sub stitute for temperature measurements on the heatsink in the center of the amplifier footprint as a final check.