Nuvoton Technology: Digital Power Control KM1M7AF Series

Product Summary

The KM1M7AF 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. The KM1M7AF series is also equipped with a PWM channel that can control shift and period with industry-leading resolution (208 ps).

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 KM1M7AF 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.

A high-resolution output function is also supported, achieving an industry-leading 208 ps resolution. It has a high-resolution duty function, high-resolution output shift function, and high-resolution periodic function, and can also achieve phase shift control and frequency control with high accuracy.

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
PWM resolution	208ps
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]		CAN	VGA	Package
series	model number	The number of pins	Instruction	Date	Instruction	Date	CAN	VGA	Package
KM1M7AF0 series	KM1M7AF00N	144	512	64	64	64	ー	〇	144 pins HQFQ 20 mm x 20mm
	KM1M7AF00M		384			48
	KM1M7AF00K		256			32
	KM1M7AF01N	128	512			64			128 pins HQFQ 18 mm x 18mm
	KM1M7AF01M		384			48
	KM1M7AF01K		256			32
	KM1M7AF02N	100	512			64			100 pins HQFQ 14 mm x 14mm
	KM1M7AF02M		384			48
	KM1M7AF02K		256			32
	KM1M7AF03N	80	512			64			80 pins HQFQ 14 mm x 14mm
	KM1M7AF03M		384			48
	KM1M7AF03K		256			32
KM1M7AF1 series	KM1M7AF10N	144	512	64	64	64	ー	ー	144 pins HQFQ 20 mm x 20mm
	KM1M7AF10M		384			48
	KM1M7AF10K		256			32
	KM1M7AF11N	128	512			64			128 pins HQFQ 18 mm x 18mm
	KM1M7AF11M		384			48
	KM1M7AF11K		256			32
	KM1M7AF12N	100	512			64			100 pins HQFQ 14 mm x 14mm
	KM1M7AF12M		384			48
	KM1M7AF12K		256			32
	KM1M7AF13N	80	512			64			80 pins HQFQ 14 mm x 14mm
	KM1M7AF13M		384			48
	KM1M7AF13K		256			32
KM1M7AF5 series	KM1M7AF50N	144	512	64	64	64	〇	〇	144 pins HQFQ 20 mm x 20mm
	KM1M7AF50M		384			48
	KM1M7AF50K		256			32
	KM1M7AF51N	128	512			64			128 pins HQFQ 18 mm x 18mm
	KM1M7AF51M		384			48
	KM1M7AF51K		256			32
	KM1M7AF52N	100	512			64			100 pins HQFQ 14 mm x 14mm
	KM1M7AF52M		384			48
	KM1M7AF52K		256			32
	KM1M7AF53N	80	512			64			80 pins HQFQ 14 mm x 14mm
	KM1M7AF53M		384			48
	KM1M7AF53K		256			32
KM1M7AF6 series	KM1M7AF60N	144	512	64	64	64	〇	ー	144 pins HQFQ 20 mm x 20mm
	KM1M7AF60M		384			48
	KM1M7AF60K		256			32
	KM1M7AF61N	128	512			64			128 pins HQFQ 18 mm x 18mm
	KM1M7AF61M		384			48
	KM1M7AF61K		256			32
	KM1M7AF62N	100	512			64			100 pins HQFQ 14 mm x 14mm
	KM1M7AF62M		384			48
	KM1M7AF62K		256			32
	KM1M7AF63N	80	512			64			80 pins HQFQ 14 mm x 14mm
	KM1M7AF63M		384			48
	KM1M7AF63K		256			32

Product block diagram

KM1M7AF series block diagram

Use applications

・Digital power control (ACDC, DCDC, DCAC)

・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
・Reference boards for various motor controls are also available.
- Bidirectional converter reference board
- 3KW Interleaved Totem Pole PFC Reference Board
・As a model-based development environment, we also provide each simulation model for Mathworks' Matlab/simlink.