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Infineon EVAL MTR 48V150A GaN User Manual
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Infineon EVAL MTR 48V150A GaN User Manual

Infineon EVAL MTR 48V150A GaN User Manual

Low voltage motor drive evaluation board with coolgan transistors for high current applications
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UG171032
Low voltage motor drive evaluation board with
CoolGaN™ transistors for high current applications
About this document
Scope and purpose
This document provides an overview of the EVAL_MTR_48V150A_GaN CoolGaN™ motor drive evaluation board
for low-voltage applications, including information on the hardware, mechanical structure, and test setup.
Intended audience
This document is intended for system application engineers who want to improve space utilization and seek
inspiration for their next motor drive designs, for low voltage applications up to 48 V and 150 A
current.
Figure 1
Evaluation board EVAL_MTR_48V150A_GaN
Note:
This document is for the EVAL_MTR_48V150A_GaN reference board. The product name
(EVAL_MOTOR_16KW_1EDN7116U_GaN) shown in the figures of this document are due to
variations in the design and manufacturing processes. Both EVAL_MTR_48V150A_GaN and
EVAL_MOTOR_16KW_1EDN7116U_GaN refer to the same reference board.
User guide
www.infineon.com
Please read the sections "Important notice" and "Warnings" at the end of this document
motor phase
RMS
V 1.0
2025-03-31

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Summary of Contents for Infineon EVAL MTR 48V150A GaN

  • Page 1 (EVAL_MOTOR_16KW_1EDN7116U_GaN) shown in the figures of this document are due to variations in the design and manufacturing processes. Both EVAL_MTR_48V150A_GaN and EVAL_MOTOR_16KW_1EDN7116U_GaN refer to the same reference board. User guide Please read the sections “Important notice” and “Warnings” at the end of this document V 1.0 www.infineon.com 2025-03-31...
  • Page 2 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 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Safety precautions Safety precautions Note: Please note the following warnings regarding the hazards associated with development systems. Table 1 Safety precautions Warning: The evaluation or reference board contains DC bus capacitors which take time to discharge after removal of the main supply.
  • Page 4 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Table of contents Table of contents About this document ........................1 Important notice ..........................2 Safety precautions .......................... 3 Table of contents ..........................4 Introduction .......................... 5 Design features ........................
  • Page 5 The boards provided by Infineon must be used for functional testing only. Note: Reference boards are not subject to the same procedures as regular products regarding returned material analysis (RMA), process change notification (PCN), and product discontinuation (PD).
  • Page 6 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Introduction 12 V 3.3 V 12 V to 3.3 V Phase A To connector 12 V to 5 V Phase B TLS202B1MB33: Low dropout, low noise, 3.3 V, 150 mA Q17_HBA OUT_SRC Phase C...
  • Page 7 Design features Design features EVAL_MTR_48V150A_GaN is an evaluation board equipped with the latest generation of Infineon’s CoolGaN™ Transistors in combination with a complementary EiceDRIVER™ gate driver and current sensor XENSIV™ with current reel out of the chip.
  • Page 8 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Design features 2.1.4 TLS202B1MBV33 low-dropout voltage regulator TLS202B1MBV33 is a monolithic integrated fixed linear voltage post regulator for load currents up to 150 mA. The IC regulates an input voltage from 2.7 V to 18 V with a precision of ±3%. TLS202B1MBV33 is specially designed for applications requiring very low standby currents.
  • Page 9 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Design features Parameter Value Conditions/comment DC link voltage feedback Sensitivity 50 mV/V ±1% Onboard supply +12 V ±2% Used for LDO that supplies the gate drivers. Also supplies the 3.3 V regulator +3.3 V ±3% Used for the TLI4972 current sensor...
  • Page 10 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Design features Connector silkscreen for version 2.0 and above Protection diode Connector silkscreen for version 2.0 LED indicator and above x3 Temperature sensor External supply at 12V 6x 1END71x6U EiceDRIVER™...
  • Page 11 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Design features Pin no. Description Details Active HIGH with internal pull-up; driving the pin to 0 V disables the 5 V rail Motor phase OCD. Active LOW; all phases ORed together PWM HS A Active HIGH, 3.3 V PWM LS A...
  • Page 12 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Design features Pin no. Description Details PWM HS C and 3 Active HIGH, 3.3 V PWM LS C and 3 Active HIGH, 3.3 V PWM HS B and 2 Active HIGH, 3.3 V PWM LS B and 2 Active HIGH, 3.3 V...
  • Page 13 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Design features Figure 5 Cross-section showing the assembly of heat spreader with TIM applied to a single device for top-side cooling The placement of the TIM is shown in Figure 6 (left).
  • Page 14 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Schematic and layout Schematic and layout Overview A schematic overview of the motor drive is shown in Figure 7. The schematic can be divided into three core components: Half-bridge (HB): This block has the CoolGaN™...
  • Page 15 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Schematic and layout Transistor Gate resistor pair To the sensor external High-side transistor Not mounted Low-side transistor Figure 8 Schematic of the power stage including a gate driver for a single half-bridge HF caps DC-link caps Figure 9...
  • Page 16 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Schematic and layout Sink/source up to 4A Not mounted To the power stage Figure 10 Schematic of the gate driver and the LDO for a single half-bridge The behavior is corrected with an LDO that regulates the gate driver's supply voltage.
  • Page 17 Low voltage motor drive evaluation board with CoolGaN™ HF caps transistors for high current applications Schematic and layout From the power stage Not mounted Figure 12 Schematic of the current sensor and location on the board 3.2.3 Half-bridge (HB) layout The recommended layout for a CoolGaN™...
  • Page 18 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Schematic and layout Layers necessary for EVAL_MTR_48V150A_GaN Figure 14 Layout of the phase node and stackup Figure 15 Figure 16 report the connection from the gate driver to the device in parallel and the return path, for the low-side and the high-side respectively.
  • Page 19 Figure 18 for boards earlier than version 2.0 and in Figure 19 for versions 2.0 and later. The pinout is compatible with Infineon’s XMC1400 4400 control cards, which can also be used with other microcontrollers. The control board can be supplied with less than 25 mA from the onboard DC-DC converter, either from the 12 V or 3.3 V rail, using the...
  • Page 20 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Schematic and layout Not mounted Figure 19 Schematic of the pin header or control card interface for version 2.0 boards and later 3.4.1 Temperature sensing A temperature sensor (Figure 20) is connected directly to the same ground potential as the low-side switch Q2, with a scale factor of 10 mV/°C (or 20 mV/°C depending on the mounted parts, check...
  • Page 21 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Supported user modifications Supported user modifications EVAL_MTR_48V150A_GaN is a flexible evaluation board to support designs using CoolGaN™ Transistors in motor drive applications. To cater to different needs, the board supports several user modifications. External supply of 12 V rail For investigation of gate drive patterns and the first-check of the microcontroller, power the EVAL_MTR_48V150A_GaN evaluation board with an external auxiliary supply, as the onboard auxiliary power...
  • Page 22 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Supported user modifications Electrolytic capacitor place Figure 22 Additional electrolytic capacitor with a step of 7 mm and V measurements The EVAL_MTR_48V150A_GaN evaluation board provides onboard probing points of critical waveforms, such as and V , as shown in Figure...
  • Page 23 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Supported user modifications UVLO, heatsink electrical connection, and battery voltage divider The UVLO of the main DC-DC converter, which steps down the main power connection, can be tuned for a lower battery voltage (e.g., 36 V).
  • Page 24 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Supported user modifications Gate resistor and C external replacements The EVAL_MTR_48V150A_GaN board is equipped with a gate resistor and external C to slow down dV/dt when it is requested. Figure 25 shows where the gate drivers are shown for one half-bridge of the inverter.
  • Page 25 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Measurements Measurements Here are some typical measurements that can be observed with the EVAL_MTR_48V150A_GaN evaluation board for reference. measurement Figure 26 shows an example measurement of low-side V (also called phase node V ) using the test pads shown in...
  • Page 26 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Measurements Measurement of losses: RL load with different gate drive options Measurements of the RL load with the setup shown in Figure 27 are necessary to evaluate the losses under different conditions, with gate drivers, and the type of cooling used.
  • Page 27 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Measurements 37.3°C on the power stage 60.5°C on the power stage Airflow Airflow Figure 29 PCB temperature during the test with RL load at f = 100 kHz and airflow of 5 m/s; (left) phase current of 50 A ;...
  • Page 28 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Measurements DUT (inverter ) Figure 31 Cooling condition in the measurement setup Figure 32 shows the efficiency and the losses of the inverter, the motor, and the overall system (motor plus inverter).
  • Page 29 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Measurements Thermal camera Heatsink Figure 33 Temperature on top of the heatsink, acquired by a thermal camera User guide V 1.0 2025-03-31...
  • Page 30 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Note for the first start of the board Note for the first start of the board The section reports the notes related to the first run of the board and limitations on the control side. The duty cycle of the PWM cannot be greater than 97% with a switching frequency PWM of 100 kHz •...
  • Page 31 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Bill of materials Bill of materials Table 5 Bill of materials for EVAL_MTR_48V150A_GaN Qty. Part Designator Part No. Manufacturer Alternative description parts/ Comments C1A, C1B, C1C, C2A, 100 nF GRM188R72A104KA35D Murata...
  • Page 32 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Bill of materials Qty. Part Designator Part No. Manufacturer Alternative parts/ description Comments C96A, C96B, C96C, C130A, C130B, C130C C94A, C94B, C94C, Should have soft 4.7 µF GRJ31CZ72A475KE01L Murata C95A, C95B, C95C,...
  • Page 33 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Bill of materials Qty. Part Designator Part No. Manufacturer Alternative parts/ description Comments 10 µF C203A, C203B, C203C, CM105X6S106K16AT – C212A, C212B, C212C, C224A, C224B, C224C, C225A, C225B, C225C, C241A, C241B, C241C C204A, C204B, C204C, 1 nF...
  • Page 34 Kingbright – LED green LED2 AA1608CGSK Kingbright – GaN HEMT Q17A, Q17B, Q17C, IGC025S08S1 Infineon – Q18A, Q18B, Q18C, Q19A, Q19B, Q19C, Q20A, Q20B, Q20C, Q21A, Q21B, Q21C, Q22A, Q22B, Q22C, Q23A, Q23B, Q23C, Q24A, Q24B, Q24C, Q25A, Q25B, Q25C,...
  • Page 35 ERJ-3EKF1963V Panasonic – – 528-744 RS PRO – – 970250321 Würth – Elektronik Gate driver U3A, U3B, U3C, U6A, 1EDN7116U Infineon – U6B, U6C Current U4A, U4B, U4C TLE4972-AE35S5 Infineon – sensor Temp. U5A, U5B, U5C MCP9700AT-E/LT Microchip MAX6612MXK+T sensor...
  • Page 36 References [1] Infineon Technologies AG: Datasheet for Infineon CoolGaN™ Transistors (2024); Available online [2] Infineon Technologies AG: Datasheet for EiceDRIVER™ 1EDN71x6U, 200 V high-side TDI gate driver IC for GaN transistors and MOSFETs; Available online [3] Infineon Technologies AG: Datasheet for TLE4972 high precision coreless current sensor for industrial applications in 4.5x3.5 mm SMD package;...
  • Page 37 Low voltage motor drive evaluation board with CoolGaN™ transistors for high current applications Revision history Revision history Document Date Description of changes revision V 1.0 2025-03-31 Initial version User guide V 1.0 2025-03-31...
  • Page 38 Technologies in a written document signed by 81726 Munich, Germany authorized representatives of Infineon Technologies, Infineon Technologies’ products may not be used in any applications where a failure of the product or any © 2025 Infineon Technologies AG. consequences of the use thereof can reasonably be expected to result in personal injury.