MP39A

MP39 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

• HIGH INTERNAL DISSIPATION — 125 Watts
• HIGH VOLTAGE, HIGH CURRENT — 100V, 10A
• HIGH SLEW RATE — 10V/µs
• 4 WIRE CURRENT LIMIT SENSING
• OPTIONAL BOOST VOLTAGE INPUTS

APPLICATIONS

• LINEAR AND ROTARY MOTOR DRIVES
• YOKE/MAGNETIC FIELD EXCITATION
• PROGRAMMABLE POWER SUPPLIES TO ±45V
• INDUSTRIAL AUDIO
• PACKAGE OPTION - DIP10 - DUAL-IN-LINE

DESCRIPTION

The MP39 is a cost-effective high voltage MOSFET power operational amplifier constructed with surface mount com - ponents on a thermally conductive but electrically isolated substrate. While the cost is low the MP39 offers many of the same features and performance specifications found in much more expensive hybrid power amplifiers. The metal substrate allows the MP39 to dissipate power up to 125 watts and its power supply voltages can range up to +/- 50 Volts (100V total). Optional boost voltage inputs allow the small signal portion of the amplifier to operate at higher supply voltages than the high current output stage. The amplifier is then biased to achieve close linear swings to the supply rails at high current for extra efficient operation. External compensation tailors performance to the user needs. A four-wire sense technique allows current limiting without the need to consider internal or external mili-ohm parasitic resistance in the output line. An Iq pin is available which can be used to shut off the quiescent current in the output stage. The output stage then operates class C and lowers quiescent power dissipation. This is useful in applications where output crossover distortion is not important. EQUIVALENT SCHEMATIC * SEE "BYPASSING" PARAGRAPH Phase Compensation Gain Cc Rc 1 470pF 100Ω ≥ 3 220pF Short ≥ 10 100pF Short TYPICAL APPLICATION REF: APPLICATION NOTE 25 The high power bandwidth and high voltage output of the MP39 allows driving ultra-sonic transducers via a resonant circuit including the transducer and a matching transformer. The load circuit appears resistive to the MP39. EXTERNAL CONNECTIONS 30-pin DIP PACKAGE STYLE CL

APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS SUPPLY VOLTAGE, +VS to –VS 100V BOOST VOLTAGE ±VS ±20V OUTPUT CURRENT, within SOA 25A POWER DISSIPATION, internal 125W INPUT VOLTAGE, differential ±20V INPUT VOLTAGE, common mode ±VB TEMPERATURE, pin solder - 10s 200°C TEMPERATURE, junction2 175°C TEMPERATURE, storage –40 to +105°C OPERATING TEMPERATURE RANGE, case –40 to +85°C MP39 • MP39A SPECIFICATIONS NOTES: * The specification of MP39A is identical to the specification for MP39 in applicable column to the left. 1. Unless otherwise noted: T C = 25°C, RC = 100Ω, CC = 470pF. DC input specifications are ± value given. Power supply voltage is typical rating. ±VB = ±VS. 2. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to achieve high MTTF. For guidance, refer to the heatsink data sheet. 3. Rating applies if the output current alternates between both output transistors at a rate faster than 60 Hz. 4. The MP39 must be used with a heat sink or the quiescent power may drive the unit to junction temperatures higher than 175°C. The MP39 is constructed from MOSFET transistors. ESD handling procedures must be observed.CAUTION MP39 MP39A PARAMETER TEST CONDITIONS 1 MIN TYP MAX MIN TYP MAX UNITS INPUT OFFSET VOLTAGE, initial 5 10 * 3 mV OFFSET VOLTAGE, vs. temperature Full temperature range 30 50 * * µV/°C OFFSET VOLTAGE, vs. supply 15 * µV/V OFFSET VOLTAGE, vs. power Full temperature range 30 * µV/W BIAS CURRENT, initial 10 200 * 100 pA BIAS CURRENT, vs. supply .01 * pA/V OFFSET CURRENT, initial 10 50 * 30 pA INPUT IMPEDANCE, DC 10 10 * Ω INPUT CAPACITANCE 20 * pF COMMON MODE VOLTAGE RANGE Full temperature range ±VB 15 ±V B 12 * * V COMMON MODE REJECTION, DC Full temp, range, VCM= ±20V 86 98 * * dB INPUT NOISE 100kHz BW, RS = 1KΩ 10 * µVrms GAIN OPEN LOOP, @15Hz Full temperature range, C C = 100pF 94 113 * * db GAIN BANDWIDTH PRODUCT I O=10A 2 * MHz POWER BANDWIDTH RL=10Ω, VO = 90V p-p 40 * kHz CC = 100pF PHASE MARGIN Full temperature range 60 * ° OUTPUT VOLTAGE SWING IO=10A ±VS 8.8 ±V S 6.0 * * V VOLTAGE SWING ±VB = ±VS ±10V, IO=10A ±VS 6.8 ±V S 1.1 * * V SETTLING TIME to .1% AV=+1,10V step, RL =4Ω 2.5 * µs SLEW RATE AV= –10, CC= 100pF 10 * V/µs CAPACITIVE LOAD Full temperature range, AV=+1 10 * nF RESISTANCE 4 * Ω CURRENT, CONTINUOUS 10 11 A POWER SUPPLY VOLTAGE Full temperature range ±15 ±40 ±50 * * * V CURRENT, quiescent, boost supply 22 * mA CURRENT, quiescent, total 26 * mA THERMAL RESISTANCE, AC, junction to case3 Ful l temperature range, F>60Hz .9 * °C/W RESISTANCE, DC, junction to case Full temperature range, F<60Hz 1.2 * °C/W RESISTANCE4, junction to air Full temperature range 12 * °C/W TEMPERATURE RANGE, case Meets full range specification -40 85 * * °C

APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com TYPICAL PERFORMANCE GRAPHSMP39 • MP39A

APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com GENERAL Please read Application Note 1 "General Operating Con - siderations" which covers stability, supplies, heat sinking, mounting, current limit, SOA interpretation, and specification interpretation. Visit www.apexmicrotech.com for design tools that help automate tasks such as calculations for stability, internal power dissipation, current limit; heat sink selection; Apex’s complete Application Notes library; Technical Seminar Workbook; and Evaluation Kits. CURRENT LIMIT The two current limit sense lines are to be connected directly across the current limit sense resistor. For the current limit to work correctly pin 24 must be connected to the amplifier output side and pin 23 connected to the load side of the current limit resistor, R CL, as shown in Figure 1. This connection will bypass any parasitic resistances, Rp, formed by sockets and solder joints as well as internal amplifier losses. The current limiting resistor may not be placed anywhere in the output circuit except where shown in Figure 1. The value of the current limit resistor can be calculated as follows: .7RCL = I LIMIT BOOST OPERATION With the VB feature the small signal stages of the amplifier are operated at higher supply voltages than the amplifier's high current output stage. +VS (pins 12-14) and –VS (pins 18-20) are connected to the high current output stage. An additional 10V on the V B pins is sufficient to allow the small signal stages to drive the output transistors into saturation and improve the output voltage swing for extra efficient operation when required. When close swing to the supply rails is not required the +V B and +VS pins must be strapped together as well as the –V B and –VS pins. The boost voltage pins must not be at a voltage lower than the VS pins. BYPASSING Proper bypassing of the power supply pins is crucial for proper operation. Bypass the ±Vs pins with a aluminum electrolytic capacitor with a value of at least 10µF per amp of expected output current. In addition a .47µF to 1µF ceramic capacitor should be placed in parallel with each aluminum electrolytic capacitor. Both of these capacitors have to be placed as close to the power supply pins as physically possible. If not connected to the Vs pins (See BOOST OPERATION) the V B pins should also be bypassed with a .47µF to 1µF ceramic capacitor. USING THE IQ PIN FUNCTION Pin 25 (Iq) can be tied to pin 6 (Cc1) to eliminate the class AB biasing current from the output stage. Typically this would remove 1-4 mA of quiescent current. The resulting decrease in quiescent power dissipation may be important in some applications. Note that implementing this option will raise the output impedance of the amplifier and increase crossover distortion as well. COMPENSATION The external compensation components CC and RC are con- nected to pins 4 and 6. Unity gain stability can be achieved at any compensation capacitance greater than 470 pF with at least 60 degrees of phase margin. At higher gains more phase shift can be tolerated in most designs and the compensation capacitance can accordingly be reduced, resulting in higher bandwidth and slew rate. APPLICATION REFERENCES For additional technical information please refer to the fol - lowing application notes. AN 1 General Operating Considerations AN 11 Thermal Techniques AN 38 Loop Stability with Reactive Loads 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. MP39U REV G JANUARY 2005 © 2005 Apex Microtechnology Corp. ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS MP39 • MP39A