MP103FC

MP103 RoHS Power Amplifier COMPLIANT FEATURES • • • • Low Cost Integrated Solution Output Current > 10A within SOA Internal Power Dissipation 35W Per Channel 167V/µs Slew Rate APPLICATIONS • Piezoelectric Actuation For Ink Jet Printer Nozzles DESCRIPTION The MP103 is a high voltage, high output current dual channel operational amplifier for driving capacitive loads such as piezo devices use in ink jet printing applications. The MP103 utilizes proprietary IC’s combined with discrete semiconductor and passive elements on a thermally conductive insulated metal substrate, delivering very high power from a compact module. The amplifier gain is fixed at 65 V/V when the feedback pin is connected to the VOUT pin. Internal compensation provides optimum slew rate and ensures stability. The only external components required are the current limit resistors RLIM, a series isolation resistor RS (when driving a capacitative load) and the power supply bypass capacitors. Figure 1: Equivalent Schematic Feedback A +VS +VS +VS IL IL +VAUX IL IN_A -VS -VS -VS Out A -5V Feedback B +VS +VS +VS IL IL IL IN_B Out B -VS -VS -VS www.apexanalog.com © Apex Microtechnology Inc. All rights reserved JAN 2018 MP103U Rev E MP103 TYPICAL CONNECTION Figure 2: Typical Connection +V S +V AUX 10μF 100nF 100nF RCL +V S +V AUX IN V OUT CL ½ MP103 GND FDBK OUT RFEEDBACK RL -V S -V S 2 100nF 10μF MP103U Rev E MP103 PINOUT AND DESCRIPTION TABLE Figure 3: External Connections 42 -VS_A 41 -VS_A 40 -VS_A NC 39 1 +V _A S 2 +VS_A 3 +VS_A 4 CL_A 5 CL_A IN_A 37 NC FBK_A 36 NC 35 6 CL_A 7 NC 8 OUT_A 9 NC 10 NC 11 NC 12 NC 38 MP103 (viewed from backplate) +VAUX 34 NC 33 32 GND NC 31 FBK_B 30 NC 29 13 NC 14 NC IN_B 28 NC 27 15 OUT_B 16 NC CL_B 26 CL_B 25 17 NC 18 +VS_B 19 +V _B S 20 +V _B S CL_B -VS_B -VS_B -VS_B 24 23 22 21 Pin Number Name Description 1, 2, 3 +Vs_A The positive supply rail for channel A. 4, 5, 6 CL_A Connect to the current limit resistor. Output current flows into/out of these pins through RCL. The output pin and the load are connected to the other side of RCL. 8 OUT_A The output for channel A. Connect this pin to load and to the feedback resistor. 15 OUT_B The output for channel B. Connect this pin to load and to the feedback resistor. 18, 19, 20 +Vs_B The positive supply rail for channel B. 21, 22, 23 -Vs_B The negative supply rail for channel B. Internally connected to -Vs_A. 24, 25, 26 CL_B Connect to the current limit resistor. Output current flows into/out of these pins through RCL. The output pin and the load are connected to the other side of RCL. 28 IN_B The input for channel B. 30 FBK_B The feedback pin for channel B. This pin must be connected to OUT_B to close the feedback loop. When connected directly to OUT_B the closed loop voltage gain of channel B is 65 V/V. The gain can be increased by inserting a 1/4 W resistor between FBK_B and OUT_B. 32 GND Ground. 34 Vaux +24 V power supply pin. A 24 V supply is required for operation of front end small signal circuitry. 36 FBK_A The feedback pin for channel A. This pin must be connected to OUT_A to close the feedback loop. When connected directly to OUT_A the closed loop voltage gain of channel A is 65 V/V. The gain can be increased by inserting a 1/4 W resistor between FBK_A and OUT_A. 38 IN_A The input for channel A. 40, 41, 42 -Vs_A The negative supply rail for channel A. Internally connected to -Vs_B. All Others NC No connection. MP103U Rev E 3 MP103 ELECTRICAL SPECIFICATIONS Notes: a) All Min/Max characteristics and specifications are guaranteed over the Specified Operating Conditions. Typical performance characteristics and specifications are derived from measurements taken at typical supply voltages and TC = 25°C. b) +VS and −VS denote the positive and negative supply voltages to the output stages. +VAUX denotes the positive supply voltage to the input stages. ABSOLUTE MAXIMUM RATINGS Parameter Symbol Supply Voltage, +VS to −VS Min +VS to −VS −VS Supply Voltage, −VS Max Unit 200 V -30 V Supply Voltage, +VAUX +VAUX 30 V Output Current, pk, per Channel (Within SOA) IO(PK) 15 A Power Dissipation, internal, Each Channel PD 35 W Input Voltage VIN VAUX V 225 °C 150 °C 105 °C -5 Temperature, pin solder, 10s Temperature, junction1 TJ Temperature Range, storage −40 1. Long term operation at the maximum junction temperature will result in reduced product life. Derate power dissipation to achieve high MTTF. INPUT Parameter Test Conditions Offset Voltage Offset Voltage vs. Temperature Min Typ Max Unit -6.7 ±2 6.7 mV Full temp range Bias Current, initial1 ±2 µV/°C -6.6 ±3.3 6.6 µA Test Conditions Min Typ Max Unit Fixed Gain Feedback connected to VOUT 63.5 65 66.5 V/V Gain Bandwidth, -3db CL = 47nF 230 kHz Power Bandwidth, 130 Vp-p +VS = 145V, -VS = -15V 230 kHz 1. Doubles for every 10°C of case temperature increase. GAIN Parameter 4 MP103U Rev E MP103 OUTPUT Parameter Test Conditions Min Typ Max Unit Voltage Swing IO = 10A +VS - 15 +VS - 9 V Voltage Swing IO = 10A -VS + 15 -VS + 14 V 12 A Current, Peak, Source Rs = 1 Ω, CL = 47nF, Vin ≥ 8Vp-p Slew Rate V/µs 167 POWER SUPPLY Parameter Test Conditions Voltage, -VS Min Typ Max Unit -7 -15 -20 V 24 25 V 145 -VS + 200 V 19 26 mA 13.5 15 mA 1 5 mA Typ Max Unit 1.5 1.75 °C/W Voltage, +VAUX Voltage, +VS -VS + 20 Current, quiescent, -VS Current, quiescent, +VAUX Current, quiescent, +VS THERMAL Parameter Test Conditions Min Resistance, AC, junction to case1 Full temp range, f ≥ 60 Hz Resistance, DC, junction to case Full temp range, f < 60 Hz 3.1 3.6 °C/W Resistance, junction to air Full temp range 12.5 14 °C/W 70 °C Temperature Range, case 0 1. Rating applies if the output current alternates between both output transistors at a rate faster than 60 Hz. MP103U Rev E 5 MP103 TYPICAL PERFORMANCE GRAPHS Figure 4: Power Derating Figure 5: Output Voltage Swing 40 16 Each Channel 14 /ŶƚĞƌŶĂůWŽǁĞƌŝƐƐŝƉĂƟŽŶ Per Channel, PD (W) Voltage Drop From Supply (V) 35 30 25 20 15 10 5 SINK 12 10 8 6 4 2 0 0 0 25 50 75 100 0 2.5 5 7.5 10 Output Current, IOΈΉ Case Temperature, TC (°C) Figure 6: Frequency Response Figure 7: Quiescent Current 30 50 SOURCE 1.1 0 30 -30 20 -60 10 -90 Phase 0 1.08 -150 CLOAD = 50nF -20 1k 10k 100k Frequency, F (Hz) 6 +VS 1.06 -120 -10 Normalized Quiescent Current, IQ (X) 40 Phase, PΈ°Ή Gain, A VΈΉ Gain -180 1M 1.04 1.02 VAUX 1 -VS 0.98 0.96 -25 0 25 50 75 Case Temperature, TC (°C) MP103U Rev E MP103 Figure 8: Offset Voltage vs. Temperature Figure 9: Max. DC Output Voltage 150 DC Output Voltage, VO (Vdc) Normalized Bias Current, IB (X) 1.2 1.1 1.0 0.9 0.8 0.7 0.6 -40 140 130 120 110 100 -20 0 20 40 60 80 0 Case Temperature, TC (°C) 1.6 TC = 25°C 1.5 Normalized Bias Current, IB (X) Maximum Duty Cycle (%) 75 Figure 11: Input Bias Current vs. Temperature 100 TC = 70°C 120 140 160 Output Voltage, VO (V) MP103U Rev E 50 Case Temperature, TC (°C) Figure 10: Max. Output Pulse Duty Cycle 10 100 25 180 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 -40 -20 0 20 40 60 80 Case Temperature, TC (°C) 7 MP103 Figure 12: Offset Voltage vs. Vs Supply Figure 13: Offset Voltage vs. VAux Supply 1.035 EŽƌŵĂůŝnjĞĚKīƐĞƚsŽůƚĂŐĞ͕sOS (X) EŽƌŵĂůŝnjĞĚKīƐĞƚsŽůƚĂŐĞ͕sCS (X) 1.2 1.030 1.025 1.020 1.015 1.010 1.005 1.000 0.995 1.0 0.8 0.6 0.4 0.2 0 5 30 55 80 105 130 155 180 205 5 Total Supply Voltage, VSS (V) 20 25 Figure 15: Input Bias Current vs. VSS Supply 1.2 Normalized Bias Current, IB (X) 1.4 Normalized Bias Current, IB (X) 15 Total Supply Voltage, VAUX (V) Figure 14: Input Bias Current vs. VAux Supply 1.2 1.0 0.8 0.6 0.4 0.2 1.0 0.8 0.6 0.4 0.2 0 0 5 10 15 20 Total Supply Voltage, VAUX (V) 8 10 25 5 30 55 80 105 130 155 180 205 Total Supply Voltage, VSS (V) MP103U Rev E MP103 Figure 16: Amplifier Gain vs. RFDBK Figure 17: Slew Rate vs. Temperature 105 450 400 95 Slew Rate, SR (V/μs) ŵƉůŝĮĞƌ'ĂŝŶ͕V;sͬsͿ 100 90 85 80 75 350 300 -SLR 250 200 70 65 +SLR 0 500 1000 External Feedback Resistor, RFDBK;ёͿ MP103U Rev E 1500 150 -40 -20 0 20 40 60 80 Case Temperature, TC (°C) 9 MP103 SAFE OPERATING AREA (SOA) The MOSFET output stage of the MP103 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). 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 fastrecovery diodes must be used. KƵƚƉƵƚƵƌƌĞŶƚ&ƌŽŵнsSKZͲsS;Ϳ Figure 18: SOA 1mS 10 10 mS SOURCE DC SINK DC 1 1 10 100 ^ƵƉƉůLJdŽKƵƚƉƵƚŝīĞƌĞŶƟĂů͕sSͲsO;sͿ 10 MP103U Rev E MP103 GENERAL Please read Application Note 1 “General Operating Considerations” which covers stability, supplies, heat sinking, mounting, current limit, SOA interpretation, and specification interpretation. Visit www.apexanalog.com for Apex Microtechnology’s complete Application Notes library, Technical Seminar Workbook, and Evaluation Kits. AMPLIFIER GAIN When the feedback pin for each channel is connected to the corresponding OUT pin, the gain of the amplifier is internally set to 65 V/V. The amplifier gain can be increased by connecting a resistor between the feedback and Out pin. The amplifier gain will be increased approximately 1 V/V for each additional 49.9 Ω added between the feedback and OUT pin. 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 MP103. Use electrolytic capacitors at least 10μF per output amp required. Bypass the electrolytic capacitors with high quality ceramic capacitors (X7R) 0.1μF or greater. Duplicate the supply bypass for the supply terminals of each amplifier channel. A bypass capacitor of 0.1μF or greater is recommended for the +VAUX terminal. CURRENT LIMIT For proper operation, the current limit resistor (RLIM) must be connected as shown in the external connection diagram. For optimum reliability the resistor value should be set as high as possible. The value is calculated as follows; with the maximum practical value of 30 Ω. The current limit function can be disabled by shorting the IL pin to the OUT pin. 0.7V R LIM = ----------I LIM POWER SUPPLY PROTECTION Unidirectional zener diode transient suppressors are recommended as protection on the supply pins. 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 reversal as well as line regulation. Conditions which can cause open circuits or polarity reversals on either power supply rail should be avoided or protected against. Reversals or opens on the negative supply rail is known to induce input stage failure. Unidirectional transzorbs prevent this, and it is desirable that they be both electrically and physically as close to the amplifier as possible. SERIES ISOLATION RESISTOR, RS To insure stability with all capacitive loads a series isolation resistor should be included between the output and the load as shown in the external connections drawing. A 1 Ω resistor works well for capacitive loads between 135pF and 44nF. The resistor will affect the rise and fall time of the output pulse at the capacitive load. This can be compensated for on the input signal. MP103U Rev E 11 MP103 BACKPLATE GROUNDING The substrate of the MP103 is an insulated metal substrate. It is required that it be connected to signal ground. This is accomplished when the ground pin (Pin 32) is properly connected to signal ground. 12 MP103U Rev E MP103 PACKAGE OPTIONS PACKAGE STYLE FC 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 apex.support@apexanalog.com. 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 Microtechnology, Inc. All other corporate names noted herein may be trademarks of their respective holders. MP103U Rev E 13