IRMCK099 introduction and Drone Application. imotion Team June 2, 2016

Transcription

1 IRMCK099 introduction and Drone Application imotion Team June 2, 2016

2 Senserless BLDC Motor Control System 2

3 IRMCK099 Control Block Diagram Closed Loop Speed Control SPEED_REF RAMP Accel Rate Decel Rate + - VD KP PI KI LIM- Field Weaking LIM+ LIMIT ID_REF = 0 below base speed IPM Control KP KI PI PI KP KI LIM- LIM+ LIMIT LIM- LIM+ Sensorless Field Oriented Control VQ VD j e Va Vb CARRIER_FREQ Space Vector PWM Dead time DEADTIME 6 Gate Signals FAULT VQ ESTIMATED_ANGLE ESTIMATED_SPEED Rotor Angle Estimator Start up Sequencer Fault Detection IQ ID j e Ia Ib 2/3 Iu Iv Iw Phase Current reconstruction DC bus Current Copyright Infineon Technologies AG All rights reserved. Page 3

4 IRMCK099 Typical application connection 4

5 IRMCK099 (TinyMCE) IC Features Key Features: 32bit MCE computation engine 100MIPS by Internal calibrated 100MHz system clock Hardware accelerator for fast FOC algorithm execution Zero offset/gain calibrated 8-channel 12-bit ADC (0-1.2V) Integrated OP amps and comparator for current sensing 31 parameter blocks in 16K byte OTP memory Low power standby mode, wake up by analog input (Vsp) Additional Features: Internal temperature sensor Configurable digital IO Internal overcurrent hardware comparator UART, I2C, analog (PWM) output and capture input 3.3V single supply 5mm x 5mm 32pin QFN TDI/RXD/CAP TCK 1 2 TMS/DIR 3 AIN3 AIN2 AIN1/VBUS AIN0/VSP IFB2O mm x 5mm QFN 32L TDO/TXD/PG 9 1FB1- IFB2- GPIO7/TXD IFB2+ GPIO6/RXD GPIO5/PG IFB1+ GPIO3 Application Pin Out IFB1O GPIO4/CAP VDDCAP GPIO2/DIR 26 IRMCK VDD1 GPIO1 25 VPP 24 GPIO0/GK 23 PWMWL 22 PWMVL 21 PWMUL 20 PWMWH 19 PWMVH 18 PWMUH 17 VSS 5

6 6 Vsp Control Input Vsp control is selected by configure SysConfig[3:2] to 01 In Vsp control mode, in case of fault condition, the control will try to clear the fault after a 10 seconds delay and once the fault is cleared, motor will start running

7 7 Motor Current Derating IRMCK099 features automatic motor current derating and thermal shutdown protection Each block is 128 bytes and contains all the configuration parameters Only the latest programmed block will be loaded by MCE firmware MotorLim IdFwk(max) Motor Stop RegenLim Tderating Tshutdown T

8 8 Low Speed Motor Current Limit IRMCK099 provides low speed current limit feature which reduce current limit in low speed region. This feature provides smooth and quiet start up, and it also can reduce rotor lock current. MotorLim gain Current limit = Low Speed Limit + ( MotorSpeed - MinSpd) * gain LowSpeedLim[15:8] = gain LowSpeedLim[7:0] = Low Speed Limit Low Speed Limit 0 MinSpd Low Speed Threshold MotorSpeed

9 UART Communication 8-bytes data frame (including 2-bytes checksum) Support 7 commands: Read Status; Reset; Change Control Mode; Motor Run; Motor Stop; Register Read; Register Write Networking capability: one master can control multiple IRMCK099 (slave) in a same network by using broadcast address. Each node can be assigned a 8-bit node address, support up to 254 nodes on same network. Node address (1 byte) Command (1 byte) Data Word 0 (2 bytes) Data Word 1 (2 bytes) Checksum (2 bytes) 9

10 10 Protections Motor Gatekill Critical Over Voltage Over Voltage This fault is set when there is over current and will instantly initiate inverter and regulator shutdown. Cannot be masked. This fault is set when the voltage is above a set threshold; all low side switches are clamped (zero-vector-braking) to protect the drive and brake the motor. The zero-vector is held until fault is cleared. Cannot be masked. This fault is set when the DC Bus voltage is above a set limit. Under Voltage This fault is set when the DC Bus voltage is under a set limit. Flux PLL Out Of Control Zero Speed This fault is set when the PLL is not locked which could be due to wrong parameter configuration, one or more phase loss. This fault is set if motor is not spinning for time duration Over Temperature Rotor Lock Parameter Load Link Break Protection This fault is set when the temperature is above a set limit. This fault is set when the rotor is locked This fault is set when there is no matching Motor ID is found or when there is no parameter block is programmed in the OTP. This fault is set when there is no UART communication for more than a set time limit.

11 11 Multiple Parameter Programming There are 31 parameter blocks in OTP memory Each block is 128 bytes and contains all the configuration parameters Only the latest programmed block will be loaded by MCE firmware Multiple motor support 128 Bytes 128 Bytes * Bytes 0x3FFF 0x3F80 0x3F7F 0x3080 0x307F 0x3000 0x2FFF Calibration Data Parameter block 30 Parameter block 1 Parameter block 0 4k Bytes 0x7E Checksum 0x7C Parameter 62 0x7A Parameter 61 Parameter Block n Starting MCE address = 0x3000+0x80*n User can write multiple motor parameters into multiple parameter blocks (with different MotorID) MCE Firmware load parameter block with MotorID selected MCE Program 12k Bytes Relative address (Bytes) n=0-30 0x04 Parameter 2 0x02 Parameter 1 0x00 Header MotorID can be selected by Analog input or UART. Or MotorID can be disabled and always load the final one. MCE address (Bytes) 0x0000

12 Simple Tuning (Development Environment) MCEDesigner - PC tool to tune the motor during development Communicates with IRMCK099M through UART Parameters are in the RAM during motor tuning No need to program parameter block MCEDesigner Debug Cable Reference Board 12

13 Reference design board (30W 200W) IRMCS0199 R1.1 Features: IRMCK099 IRSM DA J1: AC in Power Suppl y J5 : I/O Interface µipm- DIP J4: UART IRMCK099 J3: JTAG J2: Motor Out 13

14 Reference design board (up to 300W) Control board: IRMC0099_R3.0 Power board: IRMD505-1-D_R1.0 µipm-dip IRMCK099M 14

15 15 Demo board for Drone 25mm Infineon drone motor drive demo Controller: IRMCK099 Power: IR3742 Application: Drone Rating: 20A/25V Size: 25x13mm 2 13mm

16 Key Benefit of imotion for Drone Benefits: High integration FOC solution: Integrated op-amp, over-current comparator Low components count: 1 shunt current sensing, internal clock, internal tempsense Compact PCB for smaller drone: 20x11mm 2 per ESC for 250g drone High performance FOC algorithm: 30kHz F PWM to run 12 poles motor at 25000rpm UART communication designed for drone: Dedicated UART command for drone, networking capability Quick and consistent motor start: Be able to throw-start the drone ASIC approach: Use the IC like a hardware motor controller, save resource and time for algorithm development Prolonged battery usage time: Low loss PWM 16

17 17 Online Technical Resource Please visit our website to get more technical support material: product/power/motor-controland-gate-driver-ics/digital-motorcontrollerimotion/channel.html?channel=55 46d4624d6fc3d5014d9f028b1c56 04#ispnTab9 product/promopages/madk/

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