Application Note AN 2010-05 V1.1, June 2014 AN2010-05 MA3AE12_EVAL – Isolating Amplifier for current measurement with MIPAQTM Base IFAG IPC APS N 2010-03 2009 Application Note AN 2010-05 V1.1, June 2014 Edition 2010-05-07 Published by Infineon Technologies AG 59568 Warstein, Germany © Infineon Technologies AG 2010. All Rights Reserved. Attention please! THE INFORMATION GIVEN IN THIS APPLICATION NOTE IS GIVEN AS A HINT FOR THE IMPLEMENTATION OF THE INFINEON TECHNOLOGIES COMPONENT ONLY AND SHALL NOT BE REGARDED AS ANY DESCRIPTION OR WARRANTY OF A CERTAIN FUNCTIONALITY, CONDITION OR QUALITY OF THE INFINEON TECHNOLOGIES COMPONENT. THE RECIPIENT OF THIS APPLICATION NOTE MUST VERIFY ANY FUNCTION DESCRIBED HEREIN IN THE REAL APPLICATION. INFINEON TECHNOLOGIES HEREBY DISCLAIMS ANY AND ALL WARRANTIES AND LIABILITIES OF ANY KIND (INCLUDING WITHOUT LIMITATION WARRANTIES OF NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OF ANY THIRD PARTY) WITH RESPECT TO ANY AND ALL INFORMATION GIVEN IN THIS APPLICATION NOTE. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that lifesupport device or system, or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered. AN2010-05 Revision History: 2014-06, V1.1 Previous Version:V1.0 Changes since last revision Email address updated SP number updated Author: Alain Siani(IFAG IMM INP M AE) We Listen to Your Comments Any information within this document that you feel is wrong, unclear or missing at all? Your feedback will help us to continuously improve the quality of this document. Please send your proposal (including a reference to this document) to: [email protected] 2 N 2010-03 2009 MA3AE12_EVAL – Isolating Amplifier Application Note AN 2010-05 V1.1, June 2014 for current measurement with MIPAQTM Base Table of contents 1. INTRODUCTION .............................................................................. 4 1.1 1.2 2 2.1 2.2 2.3 2.4 3 3.1 3.2 3.3 4 5 Part number explanation ............................................................................... 4 Key data .......................................................................................................... 5 DESIGN FEATURES ........................................................................ 5 Main features .................................................................................................. 5 Dimension of the Board ................................................................................ 5 Functionality .................................................................................................. 6 Linearity .......................................................................................................... 6 SCHEMATIC AND LAYOUT OF MA3AE12_EVAL ........................... 7 Schematics ..................................................................................................... 7 Layout ............................................................................................................. 7 Bill of Material - MA3AE12_EVAL ................................................................. 7 HOW TO ORDER EVALUATION BOARDS...................................... 8 REFERENCES ................................................................................. 8 3 N 2010-03 2009 MA3AE12_EVAL – Isolating Amplifier Application Note AN 2010-05 V1.1, June 2014 for current measurement with MIPAQTM Base 1. Introduction The MA3AE12_EVAL current measurement board as shown in Figure 1 was developed to support TM user during their first steps designing applications with the MIPAQ base modules. The MA3AE12 current measurement evaluation boards are available from Infineon in small quantities. Functions and properties of these parts are described in the datasheet chapter of this document whereas the remaining paragraphs provide information intended to enable the customer to copy, modify and qualify the design for production. The design of the MA3AE12 was performed with respect to the environmental conditions described as design target in this document. The requirements for lead free reflow soldering have been considered when components were selected. The design was tested as described in this documentation but not qualified regarding manufacturing and operation in the whole ambient temperature operating range or lifetime. The boards provided by Infineon are subjected to functional testing only. Due to their purpose, the evaluation boards are not subjected to the same procedures regarding Returned Material Analysis (RMA), Process Change Notification (PCN) and Product Discontinuation (PD) as regular products. See legal disclaimer and warnings for further restrictions on Infineon’s warranty and liability. a) Top side b) bottom side Figure 1 The Module Power supply board 1.1 Part number explanation The notation of this evaluation has to be interpreted as explained in the following Table MA3AE12_EVAL Table 1 MA Module Adapter board 3A measured current up to 300A E12 Maximum blocking voltage of IGBT Module 1200V EVAL Evaluation Board Explanation of the part number 4 N 2010-03 2009 MA3AE12_EVAL – Isolating Amplifier Application Note AN 2010-05 V1.1, June 2014 for current measurement with MIPAQTM Base 1.2 Key data All values given in the Table bellow are values at ambient temperature TA = 25 °C. Parameter Input side Supply voltage VCC Output side supply voltage VDD2 min Typ 7 4,5 5 Max Unit 25 V 5,5 V Input side supply current IP 9 16 mA Output side supply current IS 13 16 mA -200 +200 mV Input voltage range (linear) Table 2 General key data and characteristic values 2 Design features Electrical features of the evaluation board and mechanical dimensions including necessary interface connections are presented in following sections. 2.1 Main features The MA3AE12_EVAL offers the following features: 15 kV/µs Common-Mode Rejection at VCM = 1000 V A fully differential amplifier ACPL-C78A PCB is designed to fulfill the requirements of IEC61800-5-1, pollution degree 2, overvoltage category III 2.2 Dimension of the Board 5 N 2010-03 2009 MA3AE12_EVAL – Isolating Amplifier Application Note AN 2010-05 V1.1, June 2014 for current measurement with MIPAQTM Base 2.3 Functionality The MA3AE12 board offers a reliable and cost efficient solution to sense each output phase current of TM the MIPAQ base in Figure 2. MA3AE12 requires to be powered by two different sources. The primary side of MA3AE12 can be powered by respectively floating top igbt gate driver voltage supply. The second side of MA3AE12 can be powered by one external source. This could be the same supply that is used for the external control unit. 1 The voltage from the current sensing resistor is applied to the input Rs+ and Rs- through an RC antialiasing filter (R1 and C2). The differential output voltage OUT+ and OUT- is proportional to the main IGBT phase current and can be externally converted to a single-ended signal by using an operational amplifier. Figure 2 Current measurement on MIPAQ 2.4 Linearity TM base with MA3AE12_EVAL 2 The transfer linearity of the chosen differential Amplifier ACPL-C78A as described in the datasheet , TM is ensured up to the nominal current of all available MIPAQ base modules. Table 3 Shunt resistor value [m] Shunt voltage @ Inom [mV] IFS75B12N3T4_B31 2,4 180 IFS100B12N3T4_B31 1,5 150 IFS150B12N3T4_B31 1 150 MIPAQ TM base Shunt voltage according to the MIPAQ TM base module Note: the series ACPL-C79X is available for higher accuracy. 1 2 TM Shunt resistor internal to MIPAQ base Further information is available in the datasheet 6 N 2010-03 2009 MA3AE12_EVAL – Isolating Amplifier Application Note AN 2010-05 V1.1, June 2014 for current measurement with MIPAQTM Base 3 Schematic and Layout of MA3AE12_EVAL To meet the individual customer requirements and to make the evaluation board a simple starting point for further developments or modifications, all necessary technical data like schematic, layout and components are included in this chapter. 3.1 Schematics 3.2 Layout 3.3 Bill of Material - MA3AE12_EVAL The tolerances for resistors should be less or equal ±1 %, for capacitors of the type C0G less or equal ±5 % and for capacitors of the type X7R less or equal ±10 %. Recommended Type Value / Type Package QTY Name Part Manufacturer Capacitor 100n/25V/X7R 0603 3 C3, C4 - Capacitor Capacitor Semiconductor Semiconductor Resistor Resistor 100n/25V/X7R 10n/25V/X7R ZMR500FTA ACPL-C78A 68R 47R 1206 0603 SOT23 SSO-8 0805 0805 3 1 1 1 1 2 C1 C2 IC1 IC2 R1 R3, R4 Zetex Avago - Table 4 Bill of Material for MA3AE12_EVAL 7 N 2010-03 2009 MA3AE12_EVAL – Isolating Amplifier Application Note AN 2010-05 V1.1, June 2014 for current measurement with MIPAQTM Base 4 How to order Evaluation Boards Every Evaluation Board has its own IFX order number and can be ordered via your Infineon Sales Partner. Information can also be found at the Infineon’s Web Page: www.infineon.com CAD-data for the board described here are available on request. The use of this data is subjected to the disclaimer given in this AN. Please contact: [email protected] IFX order number for MA3AE12_EVAL: SP000855486 5 References Datasheet of ACPL-C78A Datasheet of IFS75B12N3T4_B31 Datasheet of IFS100B12N3T4_B31 Datasheet of IFS150B12N3T4_B31 Application Note AN2009-05 “Making use of Modules with integrated Shunts” 8