MP118 • MP118A MP118 • MP118A MP108, MP108A Power Operational Amplifier FEATURES • • • • • • DESCRIPTION HIGH VOLTAGE - 200 VOLTS HIGH OUTPUT CURRENT (10A continuous) 100 WATT DISSIPATION CAPABILITY 140 kHz POWER BANDWIDTH TEMPERATURE MONITOR INTEGRATED SHUT-DOWN APPLICATIONS • • • • • INK JET PRINTER HEAD DRIVE PIEZO TRANSDUCER DRIVE INDUSTRIAL INSTRUMENTATION REFLECTOMETERS ULTRA-SOUND TRANSDUCER DRIVE +VB 8 +VB 4 The MP118 is a SMT operational amplifier that provides a cost effective solution in many industrial applications. The MP118 offers outstanding performance that rivals much more expensive hybrid components, but yet has a footprint of only ≈26cm2 (4 in2). The 140 kHz power bandwidth and 10A output of the MP118 makes it a good choice for piezo transducer drive applications. The MP118 is built on a thermally conductive but electrically insulating substrate that can be mounted to a heat sink. MP118 is based on the MP108 design, but offers lower quiescent current consumption and new features for enhanced system protection. The newly introduced over-current protection and temperature monitoring circuitry will shut-down the system before any permanent damage occurs. 14 +VS GND 3 15 +VS BACK PLATE 2 16 +VS TP 1 SUBSTRATE BACKPLATE 11 OUT CC1 5 12 OUT C C2 6 13 OUT TEMP 7 SD 9 System Control +5V 28 +ISD 27 -ISD RESET 10 20 OUT GND On-board power-on RESET -IN 34 +IN 33 21 OUT 22 OUT 17 -VS GND 32 18 -VS GND 19 -VS -VB 30 -VB 25 Figure 1: Equivalent Circuit Diagram (for Illustration Purposes Only – Not Accurate Representation) Copyright © Apex Microtechnology, Inc. 2014 www.apexanalog.com MP118U (All Rights Reserved) NOV 2014 MP118U REV C1 MP118 • MP118A ABSOLUTE MAXIMUM RATINGS Parameter Symbol Min Max Units 200 V SUPPLY VOLTAGE, +VS to -VS SUPPLY VOLTAGE, +VB (Note 4, 6) +VS +15 V SUPPLY VOLTAGE, -VB (Note 4, 6) -VS -15 V 12 A OUTPUT CURRENT, peak, within SOA POWER DISSIPATION, internal, DC 100 W +VB to -VB V 225 °C 150 °C -40 +105 °C OPERATING TEMPERATURE RANGE, case -40 +100 °C SD, RESET Signal -0.3 5.5 V INPUT VOLTAGE TEMPERATURE, pin solder, 10s (Note 2) TEMPERATURE, junction TEMPERATURE, storage SPECIFICATIONS INPUT MP118 Parameter Test Conditions (Note 1) OFFSET VOLTAGE Min Typ Max 1 5 Full temp range OFFSET VOLTAGE, vs. temperature MP118A Min Typ Max Units * 3 mV 50 * µV/ °C OFFSET VOLTAGE, vs. supply 20 * µV/V BIAS CURRENT, initial 100 70 pA 0.1 * pA/V 30 pA (Note 3) BIAS CURRENT, vs. supply OFFSET CURRENT, initial 50 INPUT RESISTANCE, DC 1011 INPUT CAPACITANCE * 4 Ω * pF COMMON MODE VOLTAGE RANGE +VB -15 * V COMMON MODE VOLTAGE RANGE -VB +15 * V COMMON MODE REJECTION, DC NOISE 92 * 20 kHz BW, Rs = 1kΩ GAIN * MP118 Parameter dB 2 Test Conditions (Note 1) OPEN LOOP, 15 Hz RL = 10kΩ CC =10pF GAIN BANDWIDTH PRODUCT @ 1 MHz CC = 10pF PHASE MARGIN FULL temp range, CC=150pF Min Typ 96 120 MP118A Max Min Typ * * dB * MHz * degrees 56 45 µV RMS 60 * Max Units POWER SUPPLY MP118 Parameter VOLTAGE CURRENT, quiescent Test Conditions (Note 1) MP118A Min Typ Max Min Typ Max Units ±15 ±75 ±100 * * * V 25 30 * 27 mA 2 MP118U MP118 • MP118A OUTPUT MP118 Parameter Test Conditions (Note 1) Min Typ MP118A Max Min Typ Max Units VOLTAGE SWING IO = 10A +VS - 10 +VS - 8.6 * * V VOLTAGE SWING IO = -10A -VS + 10 -VS + 7 * * V VOLTAGE SWING IO = 10A, +VB = +VS +10V +VS - 1.6 * V VOLTAGE SWING IO = -10A, -VB = -VS -10V -VS + 5.1 * V 10 11 A 65 * V/µs CURRENT, CONTINUOUS, DC SLEW RATE, A V = -20 CC = 10pF SETTLING TIME to 0.1% 2V step RESISTANCE No load, DC POWER BANDWIDTH 180VP-P CC = 10pF, +VS = 100V, -VS = -100V 0.55 * µs 5 * Ω * 140 THERMAL kHz MP118/MP118A Parameter RESISTANCE, AC, junction to case Test Conditions (Note 1) (Note 5) Min Typ Max Units Full temp range, F≥60 Hz 1 °C/W RESISTANCE, DC, junction to case Full temp range, F<60 Hz 1.25 °C/W RESISTANCE, junction to air Full temp range 13 °C/W +85 °C Max Units TEMPERATURE RANGE, case -40 TEMPERATURE SENSOR MP118/MP118A Parameter Test Conditions (Note 1) Temp Sensor Output Voltage, VTEMP Min TC = 25°C 2.298 Temp Sensor Gain V -13.6 Temperature Accuracy TC = -40°C to +85°C SYSTEM PROTECTION mV/°C ± 2.2 °C Max Units MP118/MP118A Parameter Test Conditions (Note 1) Min Thermal System Shut-down, TSD Thermal Shut-down Hysteresis Shut-down voltage (+ISD to -ISD) SD Active Level Typ Typ 100 °C 8 °C ± 0.65V (Note 8) SD Active Minimum Pulse width 0 V 0.2 1 V µs RESET High Level (Note 7) 4.5 5.5 V RESET Low Level (Note 7) 0 0.2 V NOTES: * The specification of MP118A is identical to the specification for the MP118 in the applicable column to the left 1. Unless otherwise noted: TC = 25°C, CC = 100pF. DC input specifications are value given. Power supply voltage is typical rating. 2. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to achieve high MTTF. 3. Doubles for every 10°C of case temperature increase. 4. +VS and -VS denote the positive and negative supply voltages to the output stage. +VB and -VB denote the positive and negative supply voltages to the input stages. 5. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz. 6. Power supply voltages +VB and -VB must not be less than +VS and -VS respectively. 7. The RESET signal is edge sensitive. A transition from low to high level triggers the MP118 shut-down function. 8. The SD signal needs to be an “open drain” signal, meaning that it is “high impedance” when not active low. MP118U 3 MP118 • MP118A TYPICAL PERFORMANCE GRAPHS CC = 100pF 60 CC = 220pF 40 20 -VS=-VB=-50V +VS=+VB=50V 0 10 100 1K 10K 100K 1M 10M FREQUENCY, F (Hz) 1 PHASE RESPONSE -90 PHASE, Ф (°) -105 -120 1 CC = 10pF 2 CC = 33pF 3 CC = 100pF 4 CC = 220pF -150 -165 250 200 150 +SR 100 -SR 0 0 50 100 150 200 250 300 350 COMPENSATION CAPACITANCE, Cc (pF) CC = 100pF CC = 220pF 100K 1M FREQUENCY, F (Hz) SLEW RATE 300 50 CC = 10pF 10K 40 80 120 160 200 TOTAL SUPPLY VOLTAGE, Vs (V) 5M OFFSET VOLTAGE VS 100 60 40 20 0 -40 -20 0 20 40 60 80 100 CASE TEMPERATURE, TC (°C) SHUT-DOWN VOLTAGE vs TEMP 110 100 90 80 70 -40 -20 0 20 40 60 80 100 CASE TEMPERATURE (°C) 9 20 POWER DERATING 80 120 8 7 6 5 4 3 OUTPUT VOLTAGE SWING W/O BOOST -V ROM S OST F O B W/O TC = 25°C 50ms PULSE M RO -V S TF OS O HB WIT ROM +V S OOST F WITH B 2 1 0 0 FROM +V S 10 2 4 6 8 OUTPUT CURRENT, IO (A) SAFE OPERATING AREA 10 1 C 5° =2 25°C TC C s, , T C= 5° m s 10 0m =2 5°C 10 , T C =8 DC , T C DC OUTPUT VOLTAGE, V0 (Vpp) 1 CC = 33pF 10 0 350 POWER RESPONSE 100 60 TC = -40°C 400 10M 1M FREQUENCY, F (Hz) 200 80 3 +VS = +VB = 50V -VS = -VB = -50V -180 100K TC = 25°C 4 2 -135 100 450 SLEW RATE, (V/us) -20 TC = 85°C NORMALIZED QUIESENT CURENT, IQ (%) 80 120 QUIESCENT CURRENT vs TEMP 130 VOLTAGE DROP FROM SUPPLY, (V) CC = 33pF 100 INTERNAL POWER DISSIPATION, P(W) OPEN LOOP GAIN, A (dB) CC = 10pF 120 QUIESCENT CURRENT vs SUPPLY 140 OUTPUT CURRENT FROM +VS OR -VS (A) SMALL SIGNAL RESPONSE 140 NORMALIZED QUIESENT CURENT, IQ (%) Figure 2: Typical Performance Graphs 0.2 1 10 100 200 SUPPLY TO OUTPUT DIFFERENTIAL, VS-VO (V) .8 TC = -40°C 2 TC = 25°C 0 -2 TC = 85°C -4 0 40 80 120 140 160 TOTAL SUPPLY VOLTAGE, VS (V) .75 SHUT-DOWN THRESHOLD VOLTAGE, OFFSET VOLTAGE, VOS 4 .7 SINKING CURRENT .65 .6 .55 SOURCING CURRENT .5 .45 .4 -40 -20 0 20 40 60 80 100 CASE TEMPERATURE, TC (°C) 4 MP118U MP118 • MP118A Figure 3: External Connections C1 + C2 C5 C6 CC 1 TP 2 4 5 6 7 8 9 10 BACK GND PLT +VB CC1 C C2 TEMP +VB SD RESET 3 -IN +IN GND NC -VB NC VIEW FROM COMPONENT SIDE -VB +ISD -ISD NC NC NC 34 33 32 31 30 29 28 23 C7 27 RLIM 26 25 24 OUT OUT OUT 11 12 13 22 21 20 OUT OUT OUT + C3 14 15 16 +VS +VS +VS -VS -VS -VS 19 18 17 C8 C4 LOAD & FEEDBACK NOTES: 1. CC has to be NPO (COG) rated for full supply voltage +VS to -VS. Typical values are provided in the section “COMPENSATION” 2. Both pins 3 and 32 have to be connected to signal ground. 3. C2 and C3 are electrolytic capacitors with 10µF per amp output current. 4. C1, C4, C5-C8 need to be high quality ceramic 100nF capacitors. 5. All OUT pins (pins 11-13 and 20-22) need to be tied together. TYPICAL APPLICATION RF The MP118's fast slew rate and wide power bandwidth make it an ideal nozzle driver for industrial inkjet printers. The 10A output capability can drive hundreds of nozzles simultaneously. Figure 4 shows a high level outline of MP118 in a typical piezo transducer drive application. +VS RI PRINT NOZZLE COMMAND VOLTAGE GENERAL Please read Application Note 1 "General Operating Considerations" which covers stability, power supplies, heat sinking, mounting, current limit, SOA interpretation. Visit www.apexanalog.com for Apex Microtechnology, Inc's complete Application Notes library, Technical Seminar Workbook and Evaluation Kits. +VS +VB GND -ISD SD RESET -VS -VB GND C C2 CC1 +ISD TEMP OUT RLIM PIEZO TRANSDUCER CC -VS Figure 4: Typical Application GROUND PINS The MP118 has two ground pins (pins 3, 32). These pins provide a return for the internal capacitive bypassing of the small signal portions of the MP118. 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. MP118U 5 MP118 • MP118A SAFE OPERATING AREA The MOSFET output stage of the MP118 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 page 4). 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 a capacitor value of at least 150pF 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 (200V). Gain CC 1 150pF 2 68pF 5 33pF 20 10pF OVERVOLTAGE PROTECTION Although the MP118 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 (Q1 and Q2 in Figure 5). 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 (Z1 and Z2 in Figure 5). The zener diodes clamp transients to voltages within the power supply rating and also clamp power supply reversals to ground. Whether zener diodes 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. POWER SUPPLY BYPASSING Bypass capacitors to power supply terminals +VS and -VS must be connected physically close to the pins to prevent local parasitic oscillation in the output stage of the MP118. 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 MP118 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 5 (Figure 3). TEMPERATURE SENSING CIRCUIT Figure 5: Overvoltage Protection +Vs -IN 34 +Vs Z1 3 GND +Vb Q2 OUT Q1 33 GND +IN -Vs -Vs -Vb 32 Z2 A temperature sensor provides pin 7 a voltage that is proportional to the case temperature. The temperature sense pin can source/sink ±50μA. 6 MP118U MP118 • MP118A INTEGRATED SHUT-DOWN FEATURE MP118 includes a latching shut-down circuit that allows turning off the output stage by any of the following conditions: 1. MP118 detects an over-temperature condition (see section “Temperature Protection”) 2. MP118 detects an over-current condition (see section “Over-Current Shut-Down Protection”) 3. The external shut-down pin 9 (SD) is active low. The latching shut-down can be reset by applying a RESET pulse (raising edge) on the RESET pin 10. Note: If the RESET pulse is applied while one the shut-down conditions still exists (over-temperature or (SD) active low), the RESET pulse is ignored and the MP118 will remain turned off. TEMPERATURE PROTECTION The temperature sensor will shut-down the MP118 once it detects a temperature at or above 100°C. The temperature protection includes a hysteresis to ensure the proper cooling down of the system. Note: The system will remain shut-down while the over-temperature condition exists. If the RESET pulse is applied while an over-temperature condition exists, the pulse is ignored and the MP118 will remain turned off. EXTERNAL SHUT-DOWN SIGNAL MP118 can be shut-down also by applying a low signal to the (SD) pin. The signal (SD) needs to be high impedance when not active, and pulled to GND level when active. Note: 1. If monitored, a logic 0 at the (SD) output indicates the part is in thermal shutdown. 2. If (SD) goes from logic 0 to 1, then it has traversed the hysteresis window and is now ready for a RESET RF OVER-CURRENT SHUT-DOWN PROTECTION Two current sense lines are to be connected directly across the current sense resistor. For the over-current protection to work correctly, pin 28 must be connected to the amplifier output side and pin 27 connected to the load side of the current sense resistor RLIM as shown in Figure 6. This connection will bypass any parasitic resistances RP, formed by socket and solder joints as well as internal amplifier losses. The current sense resistor may not be placed anywhere in the output circuit except where shown in the figure. The value of the current sense resistor can be calculated as follows: RLIM = 0.65V/ISD RIN IN 34 ISD33 27 28 ISD+ RP OUT 11-13 20-22 RLIM RL Figure 6: Over-current Protection BOOST OPERATION With the boost feature the small signal stages of the amplifier are operated at 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. MP118U 7 MP118 • MP118A BACKPLATE GROUNDING The substrate of the MP118 is an insulated metal substrate. This substrate must 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. FD PACKAGE .26 [6.6] COMPONENT CLEARANCE [16.51] 1.300 ∅.129 [∅3.28] 4 PLACES 1 1.63 +.02 -.02 .650 CL PIN 1 2.200 [55.88] 1.100 [27.94] .450 [11.43] .670 [17.02] [ 41.4 +0.51 -0.51 ] CL 1.340 [34.04] [33.02] .070 [1.78] .150 [3.81] .380 [9.65] CL NOTES: +0.51 2.49 +.02 -.02 [ 63.2 -0.51 ] .025 [0.63] SQ. PIN .100 [2.54] TYP. 1. Dimensions are inches; alternate units are [mm]. 2. Recommended PCB hole diameter for pins: .050 [1.27]. 3. 2oz. copper over 600V dielectric over aluminum substrate. 4. Tin over nickel plated phosphor bronze pins. 5. Package weight: 18g or .63oz. 6. Mount with #4 [M3] or equivalent screws. 7. It is not recommended that mounting of the package rely on the pins for mechanical support. NEED TECHNICAL HELP? CONTACT APEX SUPPORT! For all Apex Microtechnology 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 Apex Microtechnology Sales Representative. To find the one nearest to you, go to www.apexanalog.com IMPORTANT NOTICE Apex Microtechnology, Inc. has made every effort to insure the accuracy of the content contained in this document. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (expressed or implied). Apex Microtechnology reserves the right to make changes without further notice to any specifications or products mentioned herein to improve reliability. This document is the property of Apex Microtechnology and by furnishing this information, Apex Microtechnology grants no license, expressed or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Apex Microtechnology owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Apex Microtechnology integrated circuits or other products of Apex Microtechnology. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. APEX MICROTECHNOLOGY PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN PRODUCTS USED FOR LIFE SUPPORT, AUTOMOTIVE SAFETY, SECURITY DEVICES, OR OTHER CRITICAL APPLICATIONS. PRODUCTS IN SUCH APPLICATIONS ARE UNDERSTOOD TO BE FULLY AT THE CUSTOMER OR THE CUSTOMER’S RISK. Apex Microtechnology, Apex and Apex Precision Power are trademarks of Apex Microtechnolgy, Inc. All other corporate names noted herein may be trademarks of their respective holders. Copyright © Apex Microtechnology, Inc. 2014 www.apexanalog.com 8 (All Rights Reserved) NOV 2014 MP118U MP118U REV C