MP206 2-Channel Power Amplifier Print Head Driver FEATURES Optimized Solution to Drive Dynamic Capacitive Loads Peak Output Current: 21A Slew Rate: 100V/s (at 180nF load) Maximum Pulse Voltage: up to 60V (with boost supplies) Temperature Sensor 30-pin Open Frame Package APPLICATION Piezoelectric Actuation for Inkjet Printheads - Fujifilm Dimatix Samba G3L - Fujifilm Dimatix GMA series DESCRIPTION The MP206 is a 2-channel high output power amplifier for driving capacitive loads such as piezo devices used in inkjet printing applications. The amplifier provides flexibility in output drive it can provide positive or negative pulses to a constantly changing number of piezo nozzles. MP206 is built on a thermally conductive, but electrically isolated substrate, delivering high power in a very compact module. The amplifier gain is fixed at approximately 19.85V/V in non-inverting mode (or -15.7V/V for inverting mode). It is optimized to achieve a 0 to 40V (or -40 to 0V) output voltage swing. A combination of internal and external compensation allows MP206 to be tailor-fit to any of the print heads listed above, providing opti- mum slew rate and ensuring stability. Auxiliary voltages (+V and -V ) for the amplifier stage are used to B B reduce the power loss in the output drivers. Figure 1: Block Diagram +V B +V S C C -IN Input Host Class B Output OUT +IN Stage -V B -V S www.apexanalog.com Apex Microtechnology Inc. Nov 2019 Subject to Change All rights reserved MP206 Datasheet Rev AMP206 Figure 2: Typical Connection +V +V B S D1 CBP1 CBP2 CBP3 D / D E/ 5, 11 D2 +VB 15, 16 14 14 -IN A Print -IN A +V A S 17, 18, 19 Head MP206 OUT A Drive RISO A -V A S Voltage RN A 13 13 +IN A +IN A CH1 20, 21 C A C CN A 12 12 V A V A 10 IN GND IN GND D3 CC A 1 TP RC A CBP4 CBP5 2 -V S BPLT 22 +V Temperature S TMP+ CBP6 CBP7 Monitor D / 23 TMP- D E/ D4 24, 25 8 8 -IN B Print -IN B +V B S 26, 27, 28 Head MP206 OUT B Drive RISO B -V B S Voltage 7 RN B 7 +IN B +IN B CH2 29, 30 CC B CN B 6 6 V B VIN B -V 4 IN GND B GND D5 3, 9 CC B RC B CBP8 CBP9 CBP10 D6 -V -V S B The above components and supply voltages are application-specific. Please see the following table for sug- gested values. Note that these values may be altered (within the Absolute Maximum Ratings of the MP206) for special applications. 2 MP206 Datasheet Rev A