基于低成本高性能OTP存储器的运动控制专用集成电路--IRMCK099详解

infineon公司的IRMCK099是基于低成本高性能OTP存储器的运动控制专用集成电路(ASIC),包括用于无传感器控制永磁电机的灵活的微小运动控制引擎(TinyMCE),具有内部振荡器,频率高达100MHz,内置了用于单个或两个并联电流反馈重构和模拟电路的硬件接口,OTP存储器16KB,MCE数据RAM 1.5KB,MCE程序RAM12KB,主要用在泵和风扇,无人机,家用电器和其它PMSM驱动.本文介绍了IRMCK099主要特性,框图,引脚连接图和应用电路,以及评估板EVAL-M1-36-45A主要特性,电路图,材料清单和PCB设计图.

IRMCK099 is a low cost, high performance OTP memory based motion control ASIC designed primarily for appliance applications. IRMCK099 is designed to implement high performance control solutions for advanced inverterized appliance motor control. IRMCK099 contains the flexible Tiny Motion Control Engine (TinyMCE) for sensorless control of permanent magnet motors over the full speed range. The TinyMCE implements sensorless Field Oriented Control using single or leg shunt current feedback by a combination of hardware and IR-supplied firmware elements. Key components of the complex sensorless control algorithms, such as the Angle Estimator, are provided as complete pre-defined control blocks. The ASIC is designed to eliminate external components and reduce cost by including an A/D converter, analog amplifiers, an overcurrent comparator, watchdog timer and internal oscillator. Strong startup and configuration tools get the motor running quickly without any programming. A standby power mode can help to increase overall system efficiency. IRMCK099 comes in a 5mmx5mm, 32 pin QFN package.

IRMCK099 is a new generation International Rectifier integrated circuit device primarily designed as a one-chip solution for inverterized appliance motor control applications. Unlike a traditional microcontroller or DSP, the IRMCK099 provides a built-in closed loop sensorless control algorithm using the unique flexible Tiny Motion Control Engine (TinyMCE) for permanent magnet motors. The MCETM consists of a collection of control elements, motion peripherals, a dedicated motion control sequencer and internal memory to map internal signal nodes. IRMCK099 also employs a unique single shunt current reconstruction circuit in addition to two leg shunt current sensing circuit to eliminate additional analog/digital circuitry. Integrated op-amps and A/D converter enable a direct shunt resistor interface to the IC. Four analog inputs and up to eight digital I/O provide resources for application specific functions. Figure 1 shows a typical application schematic using the IRMCK099. IRMCK099 contains 16 Kbytes of OTP program memory and comes in a compact 5mm x 5mm 32-pin QFN package.

IRMCK099主要特性:

 TinyMCE (Tiny Motion Control Engine) - Dedicated computation engine for high efficiency sinusoidal sensorless motor control
 Internal Oscillator – no clock required
 Built-in hardware peripheral for single or two shunt current feedback reconstruction and analog circuits
 Supports both interior and surface permanent magnet motor sensorless control
 Loss minimization Space Vector PWM
 Internal ITRIP comparator
 Two-channel analog output (Sigma Delta D/A)
 JTAG programming port for debugging
 UART and I2C serial interface
 Factory Calibrated Analog Inputs
 Capture input
 Watchdog timer with independent internal clock
 Standby low power mode
 Internal 16 Kbyte OTP memory
 CRC Memory Check
 3.3V single supply
IRMCK099概述:
Internal clock frequency (SYSCLK) 100MHz
MCETM computation time 1 SYSCLK
MCETM computation data range 16 bit signed
OTP Memory 16KB
MCE Data RAM 1.5KB
MCE Program RAM 12KB
FAULT latency (digital filtered) 2 μsec
PWM carrier frequency 1 – 20kHz
A/D input channels 6
A/D converter resolution 12 bits
A/D converter conversion speed 2 μsec
Analog output (PWM) resolution 8 bits
UART baud rate (typ) 57.6 Kbps
Number of digital I/O (max) 8
Package (lead free) QFN 5x5 32L
Typical 3.3V operating current < 30mA
Standyby mode power consumption 3.5mW
Integrated Temperature Sensor(typ) ±5degC

IRMCK099应用:

Pumps & fans
Drones, multicopters
Home appliances
Any other PMSM drive

图1.IRMCK099框图

图2.IRMCK099引脚连接图

图3. IRMCK099典型应用框图

评估板EVAL-M1-36-45A

The EVAL-M1-36-45A evaluation board is a part of the iMOTION™ Modular Application Design Kit for drives(iMOTION™ MADK).

The MADK-platformis intended to use various power stages with different control boards. These boards can beeasily interfaced through the 20 pin iMOTION™MADK-M1 interface connector.

This evaluation board was designed to give comprehensible solutions of a power stage featuring CIPOS™. Theboard is equipped with all assembly groups for sensor less field oriented control (FOC). DC-link is provided bydirect DC-input to give direct control to DC-ripple by external source. It contains in every of three output phasesemitter-shunts for current sensing and a voltage divider for DC-link voltagemeasurement.

The EVAL-M1-36-45A evaluation board is available fromInfineon. The features of this board are described in thedesign feature chapter of this document, whereas the remaining paragraphs provide information to enable thecustomers to copy,modify and qualify the design for production, according to their own specific requirements.

Environmental conditions were considered in the design of the EVAL-M1-36-45A. The design was tested asdescribed in this document but not qualified regarding safety requirements ormanufacturing and operationover the whole operating temperature range or lifetime. The boards provided by Infineon are subject tofunctional testing only.

Evaluation boards are not subject to the same procedures as regular products regarding Returned MaterialAnalysis (RMA), Process Change Notification (PCN) and Product Discontinuation (PD). Evaluation boards areintended to be used under laboratory conditions by specialists only.

图4.评估板EVAL-M1-36-45A外形图
评估板EVAL-M1-36-45A主要指标:

图5.评估板EVAL-M1-36-45A电路图:三相逆变器(CIPOS nano IPM)

图6.评估板EVAL-M1-36-45A电路图:过流保护

图7.评估板EVAL-M1-36-45A电路图:电源
评估板EVAL-M1-36-45A材料清单:

图8.评估板EVAL-M1-36-45A PCB设计图:顶层装配

图9.评估板EVAL-M1-36-45A PCB设计图:底层装配

图10.评估板EVAL-M1-36-45A PCB设计图:顶层走线

图11.评估板EVAL-M1-36-45A PCB设计图:底层走线