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UM103815
eDisconnect Power Switch for battery-powered
applications
REF_60100EDPS
About this document
Scope and purpose
Applications with lithium-ion batteries use battery management systems (BMS) to monitor the battery state
and ensure safe operation. The battery protection unit (BPU), which is a subset of BMS, is typically equipped
with electro-mechanical or electronic switches with control circuitry for precharge and (dis-)connect
operations.
This user manual provides a brief overview about the concept and functions implemented as well as the use of
the eDisconnect Power Switch (EDPS) reference board REF_60100EDPS. This reference board is targeted for
battery-powered applications like EVs, servers, energy storage systems (ESS) and serves its purpose in safe
disconnection of the battery to abnormal conditions and connection (auto-restart) of the system to normal
conditions with the charger or load. The design offers an effective solution for the implementation of a smart
BPU using electronic devices like MOSFETs, gate-drivers, and current sensor and is intended to provide reliable
performance for such applications.
Intended audience
This document is intended for hardware developers and users of demonstrator boards.
About the reference board/kit
Product(s) embedded on a PCB with a focus on specific applications and defined use cases that may include
software. PCB and auxiliary circuits are optimized for the requirements of the target application.
This reference board can also be used during the design-in process for evaluating performances of current
sensors, Linear FETs, and TOLT MOSFETs.
Note:
Boards do not necessarily meet safety, EMI, quality standards (for example UL, CE) requirements.
Note:
PCB and auxiliary circuits are NOT optimized for final customer design.
User guide
www.infineon.com
Please read the sections "Important notice" and "Warnings" at the end of this document
V 1.0
2024-06-28
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Table of Contents
Related Manuals for Infineon REF 60100EDPS
Summary of Contents for Infineon REF 60100EDPS
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Page 1: About This Document
Boards do not necessarily meet safety, EMI, quality standards (for example UL, CE) requirements. Note: PCB and auxiliary circuits are NOT optimized for final customer design. User guide Please read the sections “Important notice” and “Warnings” at the end of this document V 1.0 www.infineon.com 2024-06-28... -
Page 2: Important Notice
Boards provided by Infineon Technologies. The design of the Evaluation Boards and Reference Boards has been tested by Infineon Technologies only as described in this document. The design is not qualified in terms of safety requirements, manufacturing, and operation over the entire operating temperature range or lifetime. -
Page 3: Safety Precautions
eDisconnect Power Switch for battery-powered applications REF_60100EDPS Safety precautions Safety precautions Note: Please note the following warnings regarding the hazards associated with development systems. Table 1 Safety precautions Warning: The DC link potential of this board is up to 100 VDC. When measuring voltage waveforms by oscilloscope, high-voltage differential probes must be used. -
Page 4: Table Of Contents
eDisconnect Power Switch for battery-powered applications REF_60100EDPS Table of contents Table of contents About this document ........................1 Important notice ..........................2 Safety precautions .......................... 3 Table of contents ..........................4 The board at a glance ......................6 Scope of supply ............................6 Block diagram ............................ - Page 5 eDisconnect Power Switch for battery-powered applications REF_60100EDPS Table of contents Test points ............................. 32 Appendices ........................... 34 BOM of the power board ........................34 BOM of the control board ........................35 References ............................ 40 Glossary ............................41 Revision history..........................43 User guide V 1.0 2024-06-28...
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Page 6: The Board At A Glance
Micro Inspector Pro GUI provided by Infineon within the standard PC setup. REF_60100EDPS is a combination of a power board named REF_60100EDPS_PB and a control board named REF_60100EDPS_CB. -
Page 7: Block Diagram
eDisconnect Power Switch for battery-powered applications REF_60100EDPS The board at a glance Block diagram Figure shows a high-level schematic architecture of REF_60100EDPS which includes a protection switch unit, a current sensor, a microcontroller, a freewheeling MOSFET, a precharge drive circuit, an auxiliary supply, and voltage-sensing subsections. -
Page 8: Board Parameters And Technical Data
eDisconnect Power Switch for battery-powered applications REF_60100EDPS The board at a glance A switching regulator is provided onboard to generate an auxiliary supply (12 V) to power the LED and the free-wheeling MOSFET’s gate-drive circuit. Alternatively, the external connector (12 V) on the control board (REF_60100EDPS_CB) can also be used for these purposes. -
Page 9: System And Functional Description
eDisconnect Power Switch for battery-powered applications REF_60100EDPS System and functional description System and functional description Power board (REF_60100EDPS_PB) Figure 3 shows the REF_60100EDPS_PB reference board is a power board consisting of MOSFETs (TOLT) connected in drain-to-drain configuration, a current sensor with a straight PCB-sensing structure, precharge MOSFETS (SSO8) in common-source configuration in the positive rail of the battery and a free-wheeling MOSFET (TOLL) across the pack terminals. -
Page 10: Control Board (Ref_60100Edps_Cb)
eDisconnect Power Switch for battery-powered applications REF_60100EDPS System and functional description Control board (REF_60100EDPS_CB) Figure 4 shows the REF_60100EDPS_CB reference board which is a power management control board consisting of the 2ED4820-EM smart gate driver [2], 1EDN8511B non-isolated one-channel gate-driver, and a 32- bit MCU, XMC1302-T028X0200 AB. -
Page 11: Hardware Application Setup
eDisconnect Power Switch for battery-powered applications REF_60100EDPS System and functional description The control board REF_60100EDPS_CB must be interfaced with the power board REF_60100EDPS_PB to drive MOSFETs. The X1 and X2 male connectors on the control board are to be interfaced with X7 and X8 on the power board respectively. -
Page 12: Description Of The Functional Blocks
Current Sensor Simulation Tool: The current-sensing structure for the defined external-rail PCB structure is simulated using the XENSIV™ Current Sensor Simulation Tool provided by Infineon Technologies. The user can enter the geometries of the PCB sensing structure as well as the layer stack to calculate the key performance parameters such as the magnetic field transfer factor, electric resistance, and power dissipation. -
Page 13: Basic Operation
USB connection and open the GUI software XENSIV™ TLx4971 - TLE4972 Current Sensor Programmer app in the Infineon Developer Center launcher. After the programmer board is recognized by the GUI, the user can initiate communication with the TLE4972 by selecting it from the list of devices in the current toolbox section. -
Page 14: Special Operation Modes
eDisconnect Power Switch for battery-powered applications REF_60100EDPS System and functional description Figure 7 shows the ideal waveforms during normal operation of the REF_60100EDPS board. During normal operation, the system start-up is initially handled by the precharge operation of the load capacitance connected across the pack terminals followed by turn-on of the main switches. -
Page 15: System Design
eDisconnect Power Switch for battery-powered applications REF_60100EDPS System design System design Schematics 3.1.1 Power board schematics Figure 9 Power board schematic 3.1.2 Control board schematics 3.1.2.1 Gate driver schematics Figure 10 Schematics of the gate-driver User guide V 1.0 2024-06-28... -
Page 16: Mcu Schematics
eDisconnect Power Switch for battery-powered applications REF_60100EDPS System design 3.1.2.2 MCU schematics Figure 11 Schematic of MCU 3.1.2.3 Auxiliary supply (V to 12 V) schematics Figure 12 Schematic of the switching regulator 3.1.2.4 12 V external supply and LDO Figure 13 Schematics of the 12 V to 3.3 V supply User guide V 1.0... -
Page 17: Layout
eDisconnect Power Switch for battery-powered applications REF_60100EDPS System design Layout 3.2.1 Power board layout Figure 14 REF_60100EDPS_PB top layer User guide V 1.0 2024-06-28... - Page 18 eDisconnect Power Switch for battery-powered applications REF_60100EDPS System design Figure 15 REF_60100EDPS_PB layer 2 Figure 16 REF_60100EDPS_PB layer 3 User guide V 1.0 2024-06-28...
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Page 19: Control Board Layout
eDisconnect Power Switch for battery-powered applications REF_60100EDPS System design Figure 17 REF_60100EDPS_PB bottom layer 3.2.2 Control board layout Figure 18 REF_60100EDPS_CB top layer User guide V 1.0 2024-06-28... - Page 20 eDisconnect Power Switch for battery-powered applications REF_60100EDPS System design Figure 19 REF_60100EDPS_CB layer 2 Figure 20 REF_60100EDPS_CB layer 3 User guide V 1.0 2024-06-28...
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Page 21: Bill Of Materials
Bill of materials Table 5 BOM of REF_60100EDPS_PB Qty Designator Description Manufacturer Manufacturer P/N Q1, Q2 OptiMOS™ 5 Single N-Channel Linear FET Infineon ISC035N10NM5LF2 100 V OptiMOS™ 5 power MOSFET in TOLT Infineon IPTC014N10NM5 Q3, Q4, Q5, Q6, Q8, Q9 OptiMOS™... -
Page 22: Connector Details
Power Switch for battery-powered applications REF_60100EDPS System design Designator Description Manufacturer Manufacturer P/N 48 V smart high-side MOSFET gate driver Infineon 2ED4820-EM with SPI Medium Power AF Schottky Diode, 30 V, Infineon BAS3010B-03W Connector details Table 7 Connectors Label... -
Page 23: Configuration Tool
The board should be connected to the PC through XMC™ Link and operated from the Micro Inspector Pro software available in Infineon Toolbox Developer Center Launcher. X4 and X5 connectors on the control board serve the purpose of debugging the firmware with an external card KIT_XMC_LINK_SEGGER_V1 which is an isolated debug probe shown in Figure 22. -
Page 24: User Interface Control
eDisconnect Power Switch for battery-powered applications REF_60100EDPS Configuration tool User interface control Figure 23 User interface control design in Micro Inspector Pro Figure 23 shows the user interface control design which has three main sections together with the simplified block diagram of REF_60100EDPS. System Status: Displays the telemetry information of the board •... - Page 25 2. The user takes full responsibility for the safety of the reference board or the battery if operated outside of the specified test setup and conditions. 3. Contact Infineon for any further technical support on hardware and software functionalities of the system. User guide V 1.0...
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Page 26: System Performance
eDisconnect Power Switch for battery-powered applications REF_60100EDPS System performance System performance Test parameters Table 8 lists the parameters for which REF_60100EDPS is tested to show the performance of the system. Table 8 Test parameters of REF_60100EDPS Specification Variable Value Battery voltage 48 V Cable inductance 1.5 µH... -
Page 27: Thermal Performance
eDisconnect Power Switch for battery-powered applications REF_60100EDPS System performance Figure 25 Precharge operation with LinearFETs: V = 48 V, C = 4.5 mF Load 5.2.3 Thermal performance 5.2.3.1 Without heatsink The power board is configured in the application setup without connecting the heatsink for measuring the maximum continuous DC current that can be drawn from the board, at a maximum case temperature of 100°C, on bidirectional protection MOSFETs at an ambient temperature of 25 °C. - Page 28 eDisconnect Power Switch for battery-powered applications REF_60100EDPS System performance Figure 26 Temperature distribution at 80 A after a ramp-up time of 90 seconds Figure 27 Thermal performance without heatsink User guide V 1.0 2024-06-28...
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Page 29: With Heatsink
System performance 5.2.3.2 With heatsink To utilize the performance of Infineon TOLT devices with the top-side cooling package for superior thermal performance, the reference board REF_60100EDPS_PB is connected to an aluminum plate heatsink having a thermal resistance (R ) of 4 K/W for enhancing heat transfer in natural air convection. With top-side cooling,... -
Page 30: Current Sensor (Tle4972) Performance
eDisconnect Power Switch for battery-powered applications REF_60100EDPS System performance 5.2.4 Current sensor (TLE4972) performance Figure 29 Sensor current deviation against Instrument current Figure 30 Overcurrent protection by TLE4972 User guide V 1.0 2024-06-28... -
Page 31: Smart Gate-Driver (2Ed4820-Em) Performance
eDisconnect Power Switch for battery-powered applications REF_60100EDPS System performance Figure 29 and Figure 30 show current sense measurements and overcurrent protection by the current sensor TLE4972-AE35D5 with its analog pins and a fast over-current detection output. The OCD1 pin of the current sensor is connected to the SAFESTATEN pin of the gate-driver 2ED4820-EM on the control board for a fast protection mechanism. -
Page 32: Led Indications
eDisconnect Power Switch for battery-powered applications REF_60100EDPS System performance Parameter Variable Value MOSFET voltage blank time 10 µs MOS_BLKx MOSFET voltage filter time 5 µs MOS_FLTx The user can request the device settings depending on application requirements. The protection mechanisms for overcurrent and short-circuit faults on REF_60100EDPS are adopted in the order shown in Table Table 10... - Page 33 eDisconnect Power Switch for battery-powered applications REF_60100EDPS System performance Label Function OCD2 Overcurrent detection channel 2 of the current-sensor (open drain) AOUT Analog output voltage of the current sensor VREF Analog output voltage of the current sensor Gate connection of charge MOSFETs Source connection of charge MOSFETs Gate connection of discharge MOSFETs Source connection of discharge MOSFETs...
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Page 34: Appendices
Table 14 Total BOM of REF_60100EDPS_PB Designator Description Manufacturer Manufacturer P/N Q1, Q2 OptiMOS™ 5 Single N-Channel Linear Infineon ISC035N10NM5LF2 FET 100 V OptiMOS™ 5 power MOSFET in TOLT Infineon IPTC014N10NM5 Q3, Q4, Q5, Q6, Q8, Q9 OptiMOS™ 5 power MOSFET 100 V in... -
Page 35: Bbom Of The Control Board
BOM of the control board Table 15 Total BOM of REF_60100EDPS_CB Qty Designator Description Manufacturer Manufacturer P/N 48 V smart high-side MOSFET gate Infineon 2ED4820-EM driver with SPI EiceDRIVER, Fast Single Channel 4A/8A Infineon 1EDN8511B Low-Side Gate Driver, UVLO - 8V 32-bit Microcontrollers with ARM®... - Page 36 eDisconnect Power Switch for battery-powered applications REF_60100EDPS Appendices Qty Designator Description Manufacturer Manufacturer P/N Bipolar Transistors - BJT PNP 100V Diodes ZXTP19100CFFTA Transistor Incorporated Bipolar Transistors - BJT NPN 100V Diodes ZXTN25100BFHTA Transistor Incorporated D1, D2 Diodes - General Purpose, Power, Diodes 1N4148WT-7 Switching 100V Io/150mA T/R...
- Page 37 eDisconnect Power Switch for battery-powered applications REF_60100EDPS Appendices Qty Designator Description Manufacturer Manufacturer P/N C12, C13, CAP / CERA / 1nF / 10V / 5% / X7R (EIA) / MuRata GCM188R72A102JA37 C39, C40 -55°C to 125°C / 0603(1608) / SMD / - CAP / CERA / 1uF / 25V / 10% / X5R (EIA) MuRata GRM21BR61E105KA99...
- Page 38 eDisconnect Power Switch for battery-powered applications REF_60100EDPS Appendices Qty Designator Description Manufacturer Manufacturer P/N R2, R24 RES / STD / 51k / 100mW / 1% / Vishay CRCW060351K0FKEAC 100ppm/K / -55°C to 155°C / 0603 / SMD / - RES / STD / 680R / 100mW / 1% / Vishay CRCW0603680RFKEAHP R3, R12...
- Page 39 eDisconnect Power Switch for battery-powered applications REF_60100EDPS Appendices Qty Designator Description Manufacturer Manufacturer P/N 25ppm/K / -55°C to 155°C / 0603(1608) / SMD / - Vishay AC0603FR-0775KL RES / STD / 75k / 100mW / 1% / 100ppm/K / -55°C to 155°C / 0603 / SMD / - RES / STD / 10k / 100mW / 0.1% / Vishay...
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Page 40: References
[1] Infineon Technologies AG, 2021: TLE4972 high precision coreless current sensor for automotive applications; Available online [2] Infineon Technologies AG, 2022: 48V Smart high-side MOSFET gate driver with SPI for automotive applications; Available online [3] Infineon Technologies AG: Current Sensor Simulation Tool;... -
Page 41: Glossary
eDisconnect Power Switch for battery-powered applications REF_60100EDPS Glossary Glossary Bill of Materials Control Board CFET Charge MOSFET CSAG Current sense amplification gain of smart gate driver Current sense output of smart gate driver DFET Discharge MOSFET EDPS eDisconnect Power Switch EEPROM Electrically Erasable Programmable Read-Only Memory of TLE492 current sensor GPIO... - Page 42 eDisconnect Power Switch for battery-powered applications REF_60100EDPS Glossary Pulse width modulation Reference Board Safe operating area Short circuit in the system Serial Peripheral Interface communication Serial Wire Debug protocol Thermal interface material TOLL TO-Leadless package TOLT TO-Leaded top-side cooling package UART Universal Asynchronous Receiver/ Transmitter hardware communication protocol Under temperature inside battery...
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Page 43: Revision History
eDisconnect Power Switch for battery-powered applications REF_60100EDPS Revision history Revision history Document Date Description of changes revision V 1.0 2024-06-28 Initial revision User guide V 1.0 2024-06-28... - Page 44 Published by Infineon Technologies office. Except as otherwise explicitly approved by Infineon Technologies AG Infineon Technologies in a written document 81726 Munich, Germany signed by authorized representatives of Infineon Technologies, Infineon Technologies’ products may not be used in any applications where a ©...
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