Nuvoton Technology: Inverter Control KM1M7BF Series

Product Summary

The KM1M7BF series is a 32-bit flash microcomputer equipped with Arm® Cortex®-M7 and featuring high processing power and high-performance analog mechanism.

Equipped with high-speed/high-precision analog functions that are ideal for motor control/digital power supply control, high-speed feedback processing can be executed, and external components can be incorporated into the microcomputer, contributing to the creation of highly efficient/miniaturized power management systems. increase.

Product features

Realization of high-speed feedback processing

In recent power electronics control, in order to achieve even higher efficiency, precision, and power savings, there is a demand for lower loss by using compound semiconductors such as SiC (silicon carbide) and GaN (gallium nitride) instead of conventional silicon-based FETs. To achieve this, high-speed, high-precision feedback processing and control are essential.

Nuvoton Technology's KM1M7BF series supports the functions required for high-speed, high-precision feedback processing and control.

Multi-function/polyphase PWM support

A maximum of 24 phases (complementary 12 channels) of PWM can be freely combined and synchronized, making it compatible with various systems. In addition, it is equipped with a wealth of PWM control functions that support the transition from analog control to digital control, and is equipped with a control assist function that is friendly not only to hardware engineers but also to software engineers.

Contributes to reduction of peripheral parts

Analog parts such as a differential amplifier that can input negative voltages and window comparators are also built in. These reference voltages are set by an internal DAC. This contributes to the reduction of external components.

Overview of each function

CPU performance	Cortex®-M7 160MHz
floating point arithmetic	Single precision - double precision supported
Instruction/Data Flash	Max 512KB / 64KB Sector 0/1 of instruction area corresponds to SWAP function
High speed A/D conversion	12bit / 0.5us (2Msps) / 3unit
Built-in analog	Differential Amplifier, Window Comparator
Safety function	Memory ECC, clock error detection, AD fault diagnosis
Power-supply voltage	5V single power supply operation

Product Line

series	model number	The number of pins	ROM[KB]		RAM[KB]		PWM (Channel)	Serial I/F	Package
			Instruction	Date	Instruction	Date
KM1M7BF0 series	KM1M7BF00N	144	512	64	64	64	Complementary 12ch (Max: 24ch)	Synchronous x 7ch (Max: UART x 6ch, I2C x 2ch, LIN x 1ch) SMBus x 1ch *Depends on number of pins	144 pins HQFP 20mm x 20mm
	KM1M7BF00M		384			48
	KM1M7BF00K		256			32
	KM1M7BF02N	100	512			64			100 pins HQFQ 14 mm x 14mm
	KM1M7BF02M		384			48
	KM1M7BF02K		256			32

Product block diagram

KM1M7BF series block diagram

Use applications

・Inverter control

・Motor control

Product support

Nuvoton Technology provides evaluation boards and evaluation environments for evaluating microcontrollers.

Evaluation board overview

・We provide a starter kit (NuMaker) that allows you to immediately start evaluating microcontrollers.
- Equipped with connectors for all pins of the microcomputer
- Built-in debugger function on board:
This makes it possible to build an evaluation environment simply by connecting a PC and NuMaker with a USB cable.
- Equipped with Arduino UNO compatible expansion terminal

Overview of development environment

・As an integrated development environment, the following environment is supported.
- IAR Embedded Workbench
- Keil MDK-ARM
・To support code development, Nuvoton also provides the following tools:
- Peripheral Code Generator: A tool that uses a GUI to generate sample code for initializing peripherals built into the microcomputer
- RAM monitor tool: A tool that monitors the RAM status of the microcomputer in real time and improves debugging and analysis efficiency
・Reference boards for various motor controls are also available.
- 3-phase interleaved PFC EVA board, etc.
・As a model-based development environment, we also provide each simulation model for Mathworks' Matlab/simlink.