MP104KF Apex Microtechnology

MP104 MP104 Dual Power Amplifier FEATURES Low Cost Integrated Solution Peak Output Current >10A within SOA Internal Power Dissipation 100 W Per Channel 50V/s Slew Rate APPLICATIONS Piezoelectric Actuation For Ink Jet Printer Nozzles DESCRIPTION The MP104 is a high voltage, high output current dual channel power amplifier for driving capacitive loads such as piezo devices used in ink jet printing applications. The MP104 utilizes proprietary ICs 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 64 V/V when the feedback pin is connected to the V pin. Internal compensation provides optimum slew rate and ensures stability. OUT The only external components required are the current limit resistors R , a series isolation resistor R and LIM S the power supply bypass capacitors. Figure 1: Equivalent Schematic FBK A 35 +VS A 4 5 Q1 6 TMP A 39 Q2 +24V OUT A 33 7 U4-A CL A 1 U2 IN A 38 2 3 Q3 -5V U1 -VS A 40 Q4 41 -VB 36 42 FBK B 28 +VS B 15 16 Q5 17 TMP B 24 Q8 OUT B 14 U4-B CL B 18 U3 19 25 20 Q7 -VS B GND 21 26 BACK OF SUBSTRATE Q6 N/C 22 32 23 34 37 11 13 27 29 30 31 89 10 12 Apex Microtechnology Inc. Apr 2018 www.apexanalog.com All rights reserved MP104U Rev E 24V 24VMP104 TYPICAL CONNECTION Figure 2: Typical Connection +V S +24V 1F 100F 1F R LIM +V S R i +V AUX I L Print nozzle I L I L R S command OUT MP104 voltage FB TMP A R SN -V B C GND SN -V S Read JN Temperature 1F -V S -V B Each Channel 2 MP104U Rev E