MP111 MP111 P r o d uMP111 c t TI ne cn ho nv oa lt oi og ny F r o m Power Operational Amplifier FEATURES • LOW COST • HIGH VOLTAGE - 100 VOLTS • HIGH OUTPUT CURRENT- 50 AMP PULSE OUTPUT, 15 AMP CONTINUOUS • 170 WATT DISSIPATION CAPABILITY • 130 V/uS SLEW RATE • 500kHz POWER BANDWIDTH APPLICATIONS • INKJET PRINTER HEAD DRIVE • PIEZO TRANSDUCER DRIVE • INDUSTRIAL INSTRUMENTATION • REFLECTOMETERS • ULTRA-SOUND TRANSDUCER DRIVE TYPICAL APPLICATION RF +VS DESCRIPTION +Vb 4 GND 3 BACK PLATE 2 TP 1 C1 R1 Cc2 R3 R5 INKJET NOZZLE DRIVE D2 R10 R7 Q11 R11 Q16 IC1 GND 32 C3 R19 TP 5 6 7 8 9 10 +VB CC1 CC2 NC +VB NC NC 11 OUT OUT 12 13 14 15 16 +VS +VS +VS -VS -VS -VS 19 18 17 VIEW FROM COMPONENT SIDE -IN +IN GND NC -VB NC +ILIM -ILIM NC -VB NC NC 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 OUT OUT OUT C7 RLIM C8 + 17 -Vs 18 -Vs -Vb 25 19 -Vs C3 C4 LOAD & FEEDBACK -Vb 30 www.cirrus.com BACK GND PLT OUT 4 Q22 Q21 R20 3 22 OUT Q20 Q24 13 OUT 2 21 OUT Q19 Q23 1 20 OUT Q18 R12 C6 CC 12 OUT 27 -Ilim R8 Q15B + C5 28 +Ilim R17 MP111U EXTERNAL CONNECTIONS 11 OUT Q14 +IN 33 The MP111's fast slew rate and wide power bandwith make it an ideal nozzle driver for industrial inkjet printers. The 50 amp pulse output capability can drive hundreds of inkjet nozzles simultaneously. Q3 Q9 6 Q15A PIEZO TRANSDUCER C2 Q8 R15 R9 +ILIM C1 Q7 5 -IN 34 CC2 Q6 Q4 Q12 Q13 GND RLIM OUT CC1 -VS 15 +Vs Q2 -VB -ILIM CC 16 +Vs D1 GND -VS 14 +Vs Q17 Q1B Q1A C5 SUBSTRATE BACKPLATE Cc1 R2 +VB PRINT NOZZLE COMMAND VOLTAGE EQUIVALENT CIRCUIT DIAGRAM 8 +VS RI The MP111 operational amplifier is a surface mount constructed component that provides a cost-effective solution in many industrial applications. The MP111 offers outstanding performance that rivals much more expensive hybrid components yet has a footprint of only 4 sq in. The MP111 has many optional features such as four-wire current limit sensing and external compensation. The 500 kHz power bandwidth and 15 amp continuous and 50A pulse output of the MP111 makes it a good choice for piezo transducer drive applications. The MP111 is built on a thermally conductive but electrically insulating substrate that can be mounted to a heat sink. +Vb 34-PIN DIP PACKAGE STYLE FD NOTES: CC IS NPO (COG) RATED FOR FULL SUPPLY VOLTAGE +VS TO -VS. BOTH PINS 3 AND 32 REQUIRED CONNECTED TO SIGNAL GROUND. C2 AND C3 ELECTROLYTIC ≥ 10µF PER AMP OUTPUT CURRENT. C1, C4, C5-8 HIGH QUALITY CERAMIC ≥ 0.1µF. ALL OUTPUT PINS MUST BE TIED TOGETHER. SEE PACKAGE OUTLINE FD IN THE OUTLINE DIMENSIONS DATASHEET. Copyright © Cirrus Logic, Inc. 2010 (All Rights Reserved) PHASE COMPENSATION CC 100pF 68pF 33pF GAIN W/O BOOST ≥1 ≥4 ≥10 TYP. SLEW RATE 55 V/µS 60 V/µS 130 V/µS CC 470pF 220pF 100pF GAIN W BOOST ≥3 ≥6 ≥10 TYP. SLEW RATE 12 V/µS 27 V/µS 55 V/µS DEC 20101 APEX − MP111UREVD MP111 ABSOLUTE MAXIMUM RATINGS Product Technology From EXTERNAL CONNECTIONS SUPPLY VOLTAGE, +VS to -VS SUPPLY VOLTAGE, +VB SUPPLY VOLTAGE, -VB OUTPUT CURRENT, peak POWER DISSIPATION, internal, DC INPUT VOLTAGE DIFFERENTIAL INPUT VOLTAGE TEMPERATURE, pin solder, 10s TEMPERATURE, junction2 TEMPERATURE RANGE, storage OPERATING TEMPERATURE, case 100V +VS + 15V6 -VS – 15V6 50A, within SOA 170W +VB to -VB ±25V 225°C. 175°C. -40 to 105°C. -40 to 85°C. SPECIFICATIONS PARAMETER INPUT OFFSET VOLTAGE OFFSET VOLTAGE vs. temperature OFFSET VOLTAGE vs. supply BIAS CURRENT, initial3 BIAS CURRENT vs. supply OFFSET CURRENT, initial INPUT RESISTANCE, DC INPUT CAPACITANCE COMMON MODE VOLTAGE RANGE COMMON MODE VOLTAGE RANGE COMMON MODE REJECTION, DC NOISE GAIN OPEN LOOP @ 15Hz GAIN BANDWIDTH PRODUCT @ 1MHz PHASE MARGIN OUTPUT VOLTAGE SWING VOLTAGE SWING VOLTAGE SWING VOLTAGE SWING CURRENT, continuous, DC SLEW RATE, AV = -20 SETTLING TIME, to 0.1% RESISTANCE POWER BANDWIDTH 80VP-P TEST CONDITIONS1 2 TYP 1 20 Full temperature range 1011 4 92 1MHz bandwidth, 1kΩ RS RL = 10KΩ, CC = 33pF CC = 33pF Full temperature range IO = 15A IO = -15A IO = 15A, +VB = +VS +10V IO = -15A, -VB = -VS -10V CC = 33pF 2V Step No load, DC CC = 33pF, +VS = 50V, -VS = -50V POWER SUPPLY VOLTAGE CURRENT, quiescent THERMAL RESISTANCE, AC, junction to case5 RESISTANCE, DC, junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case MIN 10 96 6 45 MAX UNITS 5 50 20 100 0.1 50 +VB - 15 -VB + 15 mV µV/°C µV/V pA pA/V pA Ω pF V V dB µV RMS dB MHz degrees V V V V A V/µS µS Ω kHz +VS - 10 -VS + 10 +VS - 0.8 -VS + 1.0 15 100 +VS - 8.4 -VS + 5.8 130 1 3 500 ±15 ±45 142 ±50 157 V mA .65 .88 13 85 °C/W °C/W °C/W °C Full temperature range, f ≥ 60Hz Full temperature range, f < 60Hz Full temperature range -40 MP111U MP111 POWER DERATING PHASE, Φ (°) 60 1 CC = 33pF 2 CC = 68pF 3 CC = 100pF RL = 4Ω IO = 1A 20 0 -40 -20 0 20 40 60 80 100 CASE TEMPERATURE, TC (°C) 0.001 30 MP111U 50 W =1 O 10 P O P 0.01 = AV = 10 CC = 33pF VS = 50V RL = 4Ω W HARMONIC DISTORTION PO = 5W 7 100 1K 10K 30K FREQUENCY, F (Hz) NORMALIZED QUIESCENT CURRENT, IQ (%) 96 TC = 25°C 92 TC = 85°C 88 TC = -40°C 84 20 40 60 80 100 TOTAL SUPPLY VOLTAGE, VS (V) 9 OUTPUT VOLTAGE SWING 8 OM +VS 7 W/O BOOST FR OM -V S T FR W/O BOOS 6 5 TC=25°C 50mS PULSE 4 3 ST FROM -V S 2 WITH BOO OM +V S 1 WITH BOOST FR 0 0 3 6 9 12 OUTPUT CURRENT, IO (A) 15 F 0.1 -25 0 25 50 75 100 CASE TEMPERATURE, TC (°C) 100 pF 70 -50 QUIESCENT CURRENT vs. SUPPLY 104 33p 80 10 10K 100 1K 10K 100K 1M 10M FREQUENCY, F (Hz) 100 90 2 C C= 100 3 C C= 110 20 1 F 120 1 CC = 33pF 2 CC = 68pF 3 CC = 100pF RL = 4Ω IO = 1A DC 40 68p CURRENT LIMIT 60 0 10 10 100 1K 10K 100K 1M 10M FREQUENCY, F (Hz) 130 80 pF 1 100 10M POWER RESPONSE 100 pF 0 120 1M FREQUENCY, F (Hz) 470 20 -180 100K 220 40 2 10M C C= 1 CC = 100pF 2 CC = 220pF 3 CC = 470pF RL = 4Ω IO = 1A DC 100K 1M FREQUENCY, F (Hz) 2 C C= 3 60 1 1 CC = 33pF 2 CC = 68pF 3 CC = 100pF RL = 4Ω IO = 1A -150 SMALL SIGNAL RESPONSE W/O BOOST OPEN LOOP GAIN, A (dB) 100 80 -180 10K -120 C C= OPEN LOOP GAIN, A (dB) -120 -150 40 -90 3 OUTPUT VOLTAGE, VO (VP-P) 80 1 2 3 NORMALIZED QUIESCENT CURRENT, IQ (%) 120 120 NORMALIZED CURRENT LIMIT, (%) 1 -90 100 PHASE RESPONSE W/O BOOST -60 PHASE, Φ (°) 160 140 SMALL SIGNAL RESPONSE W/ BOOST DISTORTION, THD (%) PHASE RESPONSE W/ BOOST -60 OUTPUT CURRENT FROM +VS OR -VS (A) 180 VOLTAGE DROP FROM SUPPLY, (V) INTERNAL POWER DISSIPATION, P (W) Product Technology From 100K 1M FREQUENCY, F(Hz) 5M QUIESCENT CURRENT vs. TEMP. 130 120 VS 110 100 90 TOTAL VB 80 -40 -20 0 20 40 60 80 100 CASE TEMPERATURE TC (°C) 50 SAFE OPERATING AREA 100S, TC=25°C 10 1mS, TC=25°C 10mS, TC=25°C DC, TC=25°C DC, TC=85°C 1 100 1 10 SUPPLY TO OUTPUT DIFFERENTIAL, VS-VO (V) 3 MP111 Product Technology From GENERAL Please read Application Note 1 "General Operating Considerations" which covers stability, power supplies, heat sinking, mounting, current limit, SOA interpretation, and specification interpretation. Visit www.cirrus.com for design tools that help automate tasks such as calculations for stability, internal power dissipation, current limit, heat sink selection, Apex Precision Power's complete Application Notes library, Technical Seminar Workbook and Evaluation Kits. GROUND PINS The MP111 has two ground pins (pins 3, 32). These pins provide a return for the internal capacitive bypassing of the small signal portions of the MP111. The two ground pins are not connected together on the substrate. Both of these pins are required to be connected to the system signal ground. SAFE OPERATING AREA The MOSFET output stage of the MP111 is not limited by second breakdown considerations as in bipolar output stages. Only thermal considerations and current handling capabilities limit the SOA (see Safe Operating Area graph on previous page). The output stage is protected against transient flyback by the parasitic body diodes of the output stage MOSFET structure. However, for protection against sustained high energy flyback external fast-recovery diodes must be used. COMPENSATION The external compensation capacitor CC is connected between pins 5 and 6. Unity gain stability can be achieved with any capacitor value larger than 100pF for a minimum phase margin of 45 degrees. At higher gains more phase shift can usually be tolerated in most designs and the compensation capacitor value can be reduced resulting in higher bandwidth and slew rate. Use the typical operating curves as a guide to select CC for the application. An NPO (COG) type capacitor is required rated for the full supply voltage (100V). OVERVOLTAGE PROTECTION Although the MP111 can withstand differential input voltages up to ±25V, additional external protection is recommended. In most applications 1N4148 signal diodes connected anti-parallel across the input pins is sufficient. In more demanding applications where bias current is important diode connected JFETs such as 2N4416 will be required. See Q1 and Q2 in Figure 1. In either case the differential input voltage will be clamped to ±0.7V. This is usually sufficient overdrive to produce the maximum power bandwidth. Some applications will also need over voltage protection devices connected to the power supply rails. Unidirectional zener diode transient suppressors are recommended. The zeners clamp transients to voltages within the power supply rating and also clamp power supply reversals to ground. Whether the zeners are used or not the system power supply should be evaluated for transient performance including power-on overshoot and power-off polarity reversals as well as line regulation. See Z1 and Z2 in Figure 1. POWER SUPPLY BYPASSING Bypass capacitors to power supply terminals +VS and -VS must be connected physically close to the pins to prevent 4 local parasitic oscillation in the output stage of the MP111. Use electrolytic capacitors at least 10µF per output amp required. Bypass the electrolytic capacitors with high quality ceramic capacitors (X7R) 0.1µF or greater. In most applications power supply terminals +Vb and -Vb will be connected to +VS and -VS respectively. Supply voltages +Vb and -Vb are bypassed internally but both ground pins 3 and 32 must be connected to the system signal ground to be effective. In all cases power to the buffer amplifier stage of the MP111 at pins 8 and 25 must be connected to +Vb and -Vb at pins 4 and 30 respectively. Provide local bypass capacitors at pins 8 and 25. See the external connections diagram on page 1. +Vs Z1 RF -IN 34 +Vs 3 +Vb RIN GND Q2 OUT 34 IN ILIM- Q1 33 +IN -Vs -Vs -Vb GND 32 33 27 28 ILIM+ RP OUT 11-13 20-22 RLIM RL Z2 FIGURE 1 OVERVOLTAGE PROTECTION FIGURE 2 4 WIRE CURRENT LIMIT 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 28 must be connected to the amplifier output side and pin 27 connected to the load side of the current limit resistor RLIM as shown in Figure 2. This connection will bypass any parasitic resistances RP, formed by socket 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 2. The value of the current limit resistor can be calculated as follows: RLIM = .65/ILIMIT BOOST OPERATION With the boost feature the small signal stages of the amplifier are operated at a higher supply voltages than the amplifier's high current output stage. +Vb (pins 4,8) and -Vb (pins 25,30) are connected to the small signal stages and +VS (pins 14-16) and -VS (pins 17-19) are connected to the high current output stage. An additional 10V on the +Vb and -Vb pins is sufficient to allow the small signal stages to drive the output stage into the triode region and improve the output voltage swing for extra efficient operation when required. When the boost feature is not needed +VS and -VS are connected to the +Vb and -Vb pins respectively. The +Vb and -Vb pins must not be operated at supply voltages less than +VS and -VS respectively. BACKPLATE GROUNDING The substrate of the MP111 is an insulated metal substrate. It is required that it be connected to signal ground. Connect pin 2 (back plate) to signal ground. The back plate will then be AC grounded to signal ground through a 1µF capacitor. MP111U Product Technology From MP111 CONTACTING CIRRUS LOGIC SUPPORT For all Apex Precision Power product questions and inquiries, call toll free 800-546-2739 in North America. For inquiries via email, please contact [email protected]. International customers can also request support by contacting their local Cirrus Logic Sales Representative. To find the one nearest to you, go to www.cirrus.com IMPORTANT NOTICE Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. 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