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Nuvoton KE-KA44370A User Manual

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KE-KA44370A
User's Manual for
KE-KA44370A Evaluation Board
July 12, 2024
Page 1 of 51
Rev 1.00

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Summary of Contents for Nuvoton KE-KA44370A

  • Page 1 KE-KA44370A User’s Manual for KE-KA44370A Evaluation Board July 12, 2024 Page 1 of 51 Rev 1.00...

  • Page 2: Disclaimer

    Nuvoton Technology Japan Corporation (hereinafter referred to as NTCJ) products. When the application system is designed using this product, please design the system at your own risk. Please read, consider, and apply appropriate usage notes and description in this standard.

  • Page 3: Table Of Contents

    KE-KA44370A Contents DISCLAIMER................................2 CONTENTS ................................3 OVERVIEW ................................. 4 RECOMMENDED OPERATING CONDITIONS ......................5 CIRCUIT DIAGRAM OF EVALUATION BOARD ...................... 6 DESCRIPTION FOR EVALUATION BOARD ......................7 ■ Connection with motor..........................7 ■ Current limit ..............................9 ■ Power supply ............................. 10 ■...

  • Page 4: Overview

    KE-KA44370A Overview KE-KA44370A evaluation board can be used to evaluate the function of our original Advanced Auto Phase & Rapid Soft switching (A2PRaS) technology installed in KA44370A, which is the single-phase motor driver. This evaluation board supports 48V power supply as well as conventional 12V and 24V.

  • Page 5: Recommended Operating Conditions

    KE-KA44370A Recommended Operating Conditions Parameter Pin Name Min. Typ. Max. Unit Note — Supply Voltage Range — HP, HN Input Voltage Range — Notes *1: It is a value under the conditions which do not exceed the absolute maximum rating and the power dissipation.

  • Page 6: Circuit Diagram Of Evaluation Board

    KE-KA44370A Circuit diagram of Evaluation board VCCIC PROG RHB_C (100Ω) D2(Mount) RHB_B RLDFG_M(1kΩ) (1kΩ) QHALL RSCK_M (1kΩ) RPROG_M(1kΩ) RSDI_M(1kΩ) RHB_BE RHB_E (10kΩ) (750Ω) HB HGND HN HP (0.1µF) (Short) HALL VREG 9 10 (No mount) HGND RSDI CS_S (10kΩ) CHALL...

  • Page 7: Description For Evaluation Board

    KE-KA44370A Description for Evaluation Board ■ Connection with motor Hall input VCCIC RHB_C (100Ω) RHB_B (1kΩ) QHALL RHB_BE RHB_E (10kΩ) (750Ω) KA44370A HB HGND HN HP HALL (No mount) (0.1µF) CHALL (0.01µF) HGND Note 1 : Value in ( ) is default value of mounted part.
  • Page 8 KE-KA44370A Description for Evaluation Board ■ Connection with motor Power output （OUT, Power Tr, Pre drive） PVCC RHG2 RHG1 (180Ω) (180Ω) CHG2 CHG1 (1.2nF) (1.2nF) CB2(0.047µF) OUT1 RB2(51Ω) External motor drive output terminals OUT1 OUT2 Connect to a motor coil.

  • Page 9: Current Limit

    KE-KA44370A Description for Evaluation Board ■ Current limit Current detection PVCC RHG2 RHG1 (180Ω) (180Ω) CHG2 CHG1 (1.2nF) (1.2nF) CB2(0.047µF) OUT1 RB2(51Ω) OUT1 OUT2 OUT2 KA44370A CB1(0.047µF) RB1(51Ω) RLG2(100Ω) RLG1(100Ω) CLG2 CLG1 (2.2nF) (2.2nF) RCSS CCSS RCS1 (0.22Ω) (100Ω) (4700pF)

  • Page 10: Power Supply

    KE-KA44370A Description for Evaluation Board ■ Power supply VCC, GND RLVD3 RLVD2 (OPEN) (100kΩ) RLVD1 (1kΩ) C50(1µF) CVCC (10µF) CVCCIC (OPEN) AGND PGND Note 1 : Value in ( ) is default value of mounted part. Note 2 : This symbol is a monitor pin [ Front side] External GND Terminal.

  • Page 11: External Interface

    KE-KA44370A Description for Evaluation Board ■ External Interface VSP Speed Control RVSP3 RVSP2 (100kΩ) (OPEN) RVSP1 LDFG (1kΩ) KA44370A C50(1µF) Note 1 : Value in ( ) is default value of mounted part. Note 2 : This symbol is a monitor pin RVSP3 Pull-up resistor for VSP pin.
  • Page 12 KE-KA44370A Description for Evaluation Board ■ External Interface LDFG output Note 1 : Value in ( ) is default value of mounted part. Note 2 : This symbol is a monitor pin [ Front side ] LDFG External LDFG terminal...
  • Page 13 KE-KA44370A Description for Evaluation Board ■ External Interface Communication to IC PROG SCK SDI RPROG_M(1kΩ) It is possible to set the parameters for IC RSDI_M(1kΩ) functions by using PROG, SCK, SDI and SDO terminal on this board. RSCK_M (1kΩ) KA44370A...

  • Page 14: Adjust Of Motor Characteristics

    KE-KA44370A Adjust of Motor Characteristics Note) Unless otherwise specified, typical values are listed. Please adjust the settings according to the motor set specifications. Please note that if you change the MOSFET or gate constant, the recommended parameter setting for "■ 7.
  • Page 15 KE-KA44370A Adjust of Motor Characteristics (continued) ■ Various Parameter Settings and Recommended Setting Values (continued) Section Parameter Parameter item Recommended parameter setting Page variable Item = 7’ b0000000 & Maximum Rotation Speed MAX1 MAX1 = 2’ b00: Setting when Speed Feedback...

  • Page 16: Fg / Ld Terminal Output Signal Selection

    KE-KA44370A Adjust of Motor Characteristics (continued) ■ 1. FG / LD Terminal Output Signal Selection selects the FG / LD terminal output from either the rotation speed signal (FG) or the motor lock FG_LD protection detection signal (LD). Select the rotation speed signal (FG) or motor lock protection detection signal (LD) according to the motor set specifications.

  • Page 17: Motor Lock Protection Setting

    KE-KA44370A Adjust of Motor Characteristics (continued) ■ 2. Motor Lock Protection Setting and T adjust the motor lock protection detection time and release time. LOCKON LOCKOFF The motor output is turned OFF during lock protection operation, and the protection is released after the lock protection release time has elapsed.

  • Page 18: Standby Power Consumption Reduction Mode Selection

    KE-KA44370A Adjust of Motor Characteristics (continued) ■ 3. Standby Power Consumption Reduction Mode Selection enables / disables the standby power consumption reduction mode (Sleep mode). SLEEP Enable / disable the standby power consumption reduction mode according to the motor set specifications.

  • Page 19: Vsp Terminal Speed Command Input Signal Selection

    KE-KA44370A Adjust of Motor Characteristics (continued) ■ 4. VSP Terminal Speed Command Input Signal Selection selects the input method (DC input mode or PWM input mode) of the speed command signal input to the VSP terminal. Select the speed command signal input method (DC / PWM) according to the motor set specifications.

  • Page 20: Speed Command Input / Output Polarity And Gain Adjustment

    KE-KA44370A Adjust of Motor Characteristics (continued) ■ 5. Speed Command Input / Output Polarity and Gain Adjustment 5.1. VSP : Speed Command Input / Output Polarity Selection selects the input / output polarity of the speed command. Select the input / output polarity of the speed command according to the motor set specifications.
  • Page 21 KE-KA44370A Adjust of Motor Characteristics (continued) ■ 5. Speed Command Input / Output Polarity and Gain Adjustment (continued) 5.2. VSP : Speed Command Input / Output Gain Adjustment adjusts the input / output gain of the rotation command (the speed command input level that results in maximum motor current).
  • Page 22 KE-KA44370A Adjust of Motor Characteristics (continued) ■ 5. Speed Command Input / Output Polarity and Gain Adjustment (continued) Table 5-1 Speed command input for maximum motor Speed command input for maximum motor current PWM input mode [%] DC input mode [V]...

  • Page 23: Motor Start / Stop Threshold Setting

    KE-KA44370A Adjust of Motor Characteristics (continued) ■ 6. Motor Start / Stop Threshold Setting 6.1. VSP : Motor Stop Selection STOP selects whether to stop the motor drive. STOP Select whether to stop the motor according to the motor set specifications.
  • Page 24 KE-KA44370A Adjust of Motor Characteristics (continued) ■ 6. Motor Start / Stop Threshold Setting (continued) 6.2. VSP : Motor Start Threshold Setting START sets the threshold value for the speed command that will initiate motor start-up. START The speed command threshold for stopping has a hysteresis width of 3.125% relative to the motor start threshold.

  • Page 25: Output Pwm Control Setting

    KE-KA44370A Adjust of Motor Characteristics (continued) ■ 7. Output PWM Control Setting Note) Please note that if you change the MOSFET or gate constant, the recommended parameter setting for this chapter "■ 7. Output PWM Control Setting" will change. 7.1. T...
  • Page 26 KE-KA44370A Adjust of Motor Characteristics (continued) ■ 7. Output PWM Control Setting (continued) 7.3. F : Output PWM Frequency Selection selects the output PWM frequency. The PWM is ON at the selected output PWM frequency. Selecting a PWM frequency of 20kHz makes it possible to improve efficiency by reducing switching losses, while selecting 30kHz makes it possible to suppress distortion of the motor current waveform.

  • Page 27: Motor Current Adjustment

    KE-KA44370A Adjust of Motor Characteristics (continued) ■ 8. Motor Current Adjustment 8.1. VT : Maximum Motor Current Adjustment adjusts the maximum motor current. When combined with current detection resistor Rcs ( = RCS1 // RCS2), the maximum motor current I...
  • Page 28 KE-KA44370A Adjust of Motor Characteristics (continued) ■ 8. Motor Current Adjustment (continued) 8.2. VT : Minimum Rotation Speed Setting sets the minimum rotation speed. When speed feedback control is disabled, the minimum motor current I is limited as a percentage of the maximum motor current based on the following formula.

  • Page 29: Speed Control Method Selection

    KE-KA44370A Adjust of Motor Characteristics (continued) ■ 9. Speed Control Method Selection 9.1. N : Maximum Rotation Speed Setting when Speed Feedback Control is Enabled MAX1 MAX2 and N set whether the speed feedback control method is enabled or disabled, and the maximum...
  • Page 30 KE-KA44370A Adjust of Motor Characteristics (continued) ■ 9. Speed Control Method Selection (continued) 9.2. G : Responsiveness Adjustment when Speed Feedback Control is Enabled STEP1 STEP0 and G adjust the responsiveness (Gain) when speed feedback control is enabled. STEP1 STEP0 Check and adjust the transient characteristics such as the settling time and overshoot / undershoot when the motor accelerates and decelerates.

  • Page 31: Vibration Suppression / High-Speed Rotation

    KE-KA44370A Adjust of Motor Characteristics (continued) ■ 10. Vibration Suppression / High-speed Rotation By adjusting the motor current waveform and slope angle, it is possible to suppress vibration with sinusoidal wave motor current, or increase the maximum rotation speed with trapezoidal wave motor current.
  • Page 32 KE-KA44370A Adjust of Motor Characteristics (continued) ■ 10. Vibration Suppression / High-speed Rotation (continued) Address Bit Item Variable Default Recommended Description Speed command input to start trapezoidal wave drive (transition wave drive completed) 0% - 93.8%, 6.25% step (16 divisions) 4’...
  • Page 33 KE-KA44370A Adjust of Motor Characteristics (continued) ■ 10. Vibration Suppression / High-speed Rotation (continued) 10.2. SL1, SL2: Trapezoidal Wave Motor Current Slope Angle Adjustment SL1 and SL2 adjust the slope angle of the trapezoidal wave motor current. The setting value is defined as an angle relative to one period of the waveform (electrical angle 360deg).

  • Page 34: Rotation Speed Characteristics Adjustment

    KE-KA44370A Adjust of Motor Characteristics (continued) ■ 11. Rotation Speed Characteristics Adjustment The rotation speed characteristics can be adjusted by adjusting the motor current phase. The detailed settings are explained below. 11.1. PH : Maximum Motor Current Advanced Phase adjusts the maximum motor current advanced phase, thereby adjusting the maximum rotation speed.
  • Page 35 KE-KA44370A Adjust of Motor Characteristics (continued) ■11. Rotation Speed Characteristics Adjustment (continued) 11.3. V : Motor Current Advanced Phase Start Threshold Setting adjusts the linearity of the rotation speed in response to the speed command input when speed feedback control is disabled. The threshold value of the speed command input at which the advanced phase starts to increase toward the maximum advanced phase of the motor current set by PH is set.

  • Page 36: Reduction Of Rush Current

    KE-KA44370A Adjust of Motor Characteristics (continued) ■ 12. Reduction of Rush Current By adjusting the motor acceleration / deceleration time, it is possible to reduce rush current when the motor starts up or when it accelerates or decelerates rapidly. 12.1. T...

  • Page 37: Resistor Map

    KE-KA44370A Adjust of Motor Characteristics (continued) ■ Resistor Map The following table is the register map for this IC. Each symbol corresponds to the variable name explained in chapters "■ 1. FG / LD Terminal Output Signal Selection" to "■ 12. Reduction of Rush Current".

  • Page 38: Parameter Setting Method

    KE-KA44370A Parameter Setting Method ■ How to Set Parameters SPI communication for parameter setting is performed by inputting to the PROG (enable), SCK (clock), and SDI (data) pins, and reading the output from the FG / LD pin (SDO). Please create and input the signals described on the following pages to set up the device.

  • Page 39: Mode List

    KE-KA44370A Parameter Setting Method (continued) ■ Mode List This IC can set and read parameters and write to OTP in the following modes. Mode Description Page You can set parameters without writing OTP. Register Setting Use this mode for pre-verification.

  • Page 40: Register Setting Mode

    KE-KA44370A Parameter Setting Method (continued) ■ 1. Register Setting Mode Overview In register setting mode, parameters can be set without writing OTP. Please use this mode to perform pre- verification before writing the OTP. Please note that the set parameters will be initialized when VCC is restarted or the IC enters standby power consumption reduction mode.

  • Page 41: Register Read Mode

    KE-KA44370A Parameter Setting Method (continued) ■ 2. Register Read Mode Overview In register read mode, parameters set in "1. Register Setting Mode", or the parameters written to the OTP in "3. OTP Write Mode" can be read if "1. Register Setting Mode" has not been executed after VCC startup.

  • Page 42: Otp Write Mode

    KE-KA44370A Parameter Setting Method (continued) ■ 3. OTP Write Mode Overview In OTP write mode, parameters can be set and written to OTP. By writing to OTP, parameter settings are retained even after VCC is restarted. Please note that the OTP can only be written once. Please perform this procedure after performing pre- verification in "1.
  • Page 43 KE-KA44370A Parameter Setting Method (continued) ■ 3. OTP Write Mode (continued) (3) OTP write command Switch PROG to "H" and input the OTP write command "0x0001". After inputting the OTP write command, set PROG to "L". After switching PROG to "L", writing to the OTP is performed. This completes the sequence for the OTP write mode.

  • Page 44: Optimization Procedure According To Motor Characteristics

    KE-KA44370A Optimization Procedure According to Motor Characteristics ■ About This Procedure This procedure is an example of the optimal procedure for adjusting the IC settings and current detection resistor Rcs according to the motor characteristics. Sufficient evaluation and verification are required in the design of the mass production set. The customer is fully responsible for the incorporation of the above procedure in the design of the equipment.

  • Page 45: Procedure When Speed Feedback Control Is Disabled

    KE-KA44370A Optimization Procedure According to Motor Characteristics (continued) ■ Procedure when Speed Feedback Control is Disabled VCC = 48V, Current detection resistor Rcs = 0.22Ω, Motor current waveform = Sinusoidal wave (VSP = 100%), VT = 0.2V, PH = 0°...

  • Page 46: Procedure When Speed Feedback Control Is Enabled

    KE-KA44370A Optimization Procedure According to Motor Characteristics (continued) ■ Procedure when Speed Feedback Control is Enabled (1) Check the max rotation speed with sinusoidal wave motor current VCC = 48V, Current detection resistor Rcs = 0.22Ω, , VT = 0.2V, VSP = 100%, = 42.2°, Maximum rotation speed N...
  • Page 47 KE-KA44370A Optimization Procedure According to Motor Characteristics (continued) ■ Procedure when Speed Feedback Control is Enabled (continued) (2) Adjust the settling time with sinusoidal wave motor current / Check low-speed stability Check settling time Check the settling time when the speed command input is at maximum acceleration.
  • Page 48 KE-KA44370A Optimization Procedure According to Motor Characteristics (continued) ■ Procedure when Speed Feedback Control is Enabled (continued) (3) Check the max rotation speed with trapezoidal wave motor current VCC = 48V Motor current waveform Current detection resistor Rcs = 0.22Ω...
  • Page 49 KE-KA44370A Optimization Procedure According to Motor Characteristics (continued) ■ Procedure when Speed Feedback Control is Enabled (continued) (4) Adjust the settling time with trapezoidal wave motor current / Check low-speed stability Check settling time Check the settling time when the speed command input is at maximum acceleration.

  • Page 50: Revision History

    KE-KA44370A Revision History Date Revision Description 2024.7.12 1.00 1. initially issued. July 12, 2024 Page 50 of 51 Rev 1.00...

  • Page 51: Important Notice

    All Insecure Usage shall be made at customer’s risk, and in the event that third parties lay claims to Nuvoton as a result of customer’s Insecure Usage, customer shall indemnify the damages and liabilities thus incurred by Nuvoton.

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