Nuvoton Technology: Inverter Control KM1M4BF Series

Product Summary

The KM1M4BF series is a 32-bit flash microcomputer equipped with Arm® Cortex®-M4F and featuring both high processing performance and low power consumption.

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 KM1M4BF series supports the functions required for high-speed, high-precision feedback processing and control.

Multi-function/polyphase PWM support

It is equipped with a maximum of 16-phase (8 complementary channels) PWM output for power control. These can be freely combined and synchronized, making it compatible with a variety of systems. It also has a wide range of PWM control functions to support the transition from analog control to digital control. It is equipped with control assist functions that are friendly to both hardware and software engineers. Furthermore, the 16-bit timer is also capable of PWM/complementary PWM output.

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®-M4 120MHz
floating point arithmetic	Single precision
Instruction/Data Flash	Max 264KB / 32KB 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 system or 3V system Single power supply operation

Product Line

series	model number	The number of pins	ROM[KB]		RAM[KB]	Package
			Instruction	Date	Date
KM1M4BF0 series	KM1M4BF02K	100	264	32	16	100 pins QFP 14 mm x 14mm
	KM1M4BF02G		136	8
	KM1M4BF03K	80	264	32		80 pins QFP 12 mm x 12mm
	KM1M4BF03G		136	8
	KM1M4BF04K	64	264	32		64 pins QFP 10 mm x 10mm
	KM1M4BF04G		136	8
	KM1M4BF05G	48	136	8		48 pins QFP 7mm x 7mm
KM1M4BF5 series	KM1M4BF52K	100	264	32	16	100 pins QFP 14 mm x 14mm
	KM1M4BF52G		136	8
	KM1M4BF53K	80	264	32		80 pins QFP 12 mm x 12mm
	KM1M4BF53G		136	8
	KM1M4BF54K	64	264	32		64 pins QFP 10 mm x 10mm
	KM1M4BF54G		136	8

* The difference between the KM1M4BF0 series and the KM1M4BF5 series is the allocation of the S debugger terminal (SWD).

Product block diagram

KM1M4BF series block diagram

Use applications

・Inverter 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
・As a model-based development environment, we also provide each simulation model for Mathworks' Matlab/simlink.