LogiCoA™ Brand

LogiCoA™ is a brand that embodies a design philosophy of fusing digital elements to maximize the performance of analog circuits. By combining the advantages of analog circuitry with those of digital control, it is possible to maximize the potential of circuit topologies, contributing to more efficient power utilization. As LogiCoA™ is a design concept that can be applied not only to the power supply field, but also to power solutions as a whole, ROHM is considering its application in future products and solutions.

・LogiCoA™ is a trademark or registered trademark of ROHM Co., Ltd.

LogiCoA™ Power Supply Solution Page

The basic architecture and key features of the LogiCoA™ Power Supply Solution are available on ROHM’s website.
https://www.rohm.com/support/logicoa

LogiCoA™ Power Supply Solution Reference Design Lineup

In addition to sample software, a variety of tools necessary for evaluation, such as circuit diagrams, PCB layouts, parts lists, and support documents are available on ROHM’s website, while actual device evaluation is also possible using the reference design board. Going forward, ROHM will continue to expand its lineup of reference designs to support a wide range of power topologies.
● Reference Design Part No.
　• PFC + Flyback Converter: REF67004
　• Buck Converter: REF66009

Reference Design Part No.	REF67004	REF66009
Design Name	LogiCoA™ Power Supply Solution PFC + Flyback Converter (AC: 85V to 264V input/ DC 24V output)	LogiCoA™ Power Supply Solution Buck Converter (12V input/5V output, 25W)
LogiCoA™ MCU Part No.	ML62Q2035	ML62Q2035
Reference Design Board Part No.	LogiCoA003-EVK-001	LogiCoA001-EVK-001

LogiCoA™ MCU Lineup

Key features include a built-in 3ch analog comparator that can be synchronized with timers, along with a D/A converter that enables digital control of various parameters to support different power supply topologies.

Part No.	Data Sheet	Operating Voltage	Temperature	Timer	Comparator	A/D Converter	D/A Converter	Programmable Gain Amp	CPU	Memory			Package
										Code Flash	Data Flash	RAM
ML62Q2033-NNNTD		4.5V to 5.5V	Ta= -40°C to +105°C (Tj=+115°C) (Absolute max. rating: Tj Max. = +125°C)	16bit timer with PWM/ Capture × 6 counters, 10 outputs 64MHz (max.) operation (15.625ns resolution)	3ch (asynchronous clock operation) Response time: 100ns typ.	12bit SA-ADC: 5ch	8bit, 2ch	1ch, Gain setting: 4 levels (×4/×8/ ×16/×32)	16bit RISC CPU Core (U16), 16MHz (max.) operation	16KB	4KB (Erasable unit:128B)	2KB	TSSOP20
ML62Q2035-NNNTD										32KB
ML62Q2043-NNNGD				16bit timer with PWM/ Capture × 6 counters, 13 outputs 64MHz (max.) operation (15.625ns resolution)						16KB			WQFN24
ML62Q2045-NNNGD										32KB

LogiCoA™ MCU Development Support System

Built on a ROHM’s proprietary 16bit RISC CPU core, LogiCoA™ MCUs are fully supported by a dedicated integrated development environment and emulator tools.

For more information on the LogiCoA™ development support system and a product overviews, please visit ROHM’s LogiCoA™ MCU development system support page (link below).
https://www.rohm.com/lapis-tech/product/micon/logicoa-software

Online Sales Information

• Reference Design Board P/N:
　LogiCoA003-EVK-001*, LogiCoA001-EVK-001

• Reference Board P/N:
　RB-D62Q2035TD20, RB-D62Q2045GD24

• LogiCoA™ MCU P/N:
　ML62Q2035-NNNTDZWATZ, ML62Q2045-NNNGDZW5BY

Pricing : $677/unit (samples for LogiCoA003- EVK-001, excluding tax)

Application Examples

• Industrial robots　• Semiconductor manufacturing equipment　• Gaming devices
The LogiCoA™ Power Supply Solution is also suitable for integration into general industrial equipment and consumer devices with power requirements ranging from approximately 50W to 1kW.

Terminology

Critical Conduction Mode PFC (Power Factor Correction) Converter

A configuration used in AC-DC converters within switching power supplies, Critical Conduction Mode PFC offers a high-power factor (indicating efficient utilization of supplied power) while generating less noise compared to Continuous Conduction Mode PFC. A power factor of ‘1’ signifies that all supplied power is being effectively used without waste.

Quasi-Resonant Flyback Converter

A DC-DC converter topology commonly used in isolated power supply designs, these converters leverage a quasi-resonant control technique to minimize switching losses and noise. Ideal for applications up to 100W, it offers advantages in terms of reduced component count and cost. While other forward-type topologies exist, advancements in the components used in these designs have led to smaller, more efficient isolated power supply solutions.

Analog Control Power Supply

A power supply configuration built with analog components, commonly used for applications up to 1kW due to its simplicity and low power consumption. However, implementing advanced features such as customizable parameter settings and data logging is challenging with analog control alone, often requiring fully digital solutions that tend to increase both cost and power consumption.

Digital Control Power Supply

A power supply is managed using digital technology. High-speed CPUs and DSPs are used to precisely monitor and control key parameters such as voltage and current, improving power supply efficiency and reliability. Digital control also enables advanced functions, such as operation log data acquisition, that are difficult to implement with analog control alone. However, CPUs and DSPs tend to be expensive and consume significant power, posing challenges in terms of cost effectiveness and energy efficiency.
　• CPU (Central Processing Unit): The core processor responsible for executing programs and performing data processing.
　• DSP (Digital Signal Processor): A processor that converts analog signals into digital form and performs operations such as filtering and amplification.

Topology

Refers to the circuit configuration. Power topology defines how electrical energy is transformed and managed within a circuit. The specific configuration depends on factors such as input and output voltage levels, power requirements, and whether electrical isolation is necessary.