REF66009 - Reference Design
LogiCoA™ Solution BUCK Converter (12V Input, 5V Output, 25W)
LogiCoA001-EVK-001 is a reference design for a BUCK converter that uses ROHM's analog-digital fusion control technology LogiCoA™, which includes a microcontroller ML62Q2035 suitable for LogiCoA™, a 100V gate driver BD2320EFJ-LA, LDO BD950N1WG-C, BD900N1WG-C, operational amplifier BU7481SG, and shunt resistor LTR100LJZPFSR020. Design data, sample software, and an operating system for power supply control are available for this reference design, as well as a reference board. We hope that you will have a chance to experience the analog-digital fusion control LogiCoA™ and make use of it in your future power supply device development.
Reference Program
We offer a reference program comprising an OS for power control and firmware for BUCK converter control. Additionally, we provide a communication GUI that allows communication from a Windows PC. Please utilize these as design references. Reference Program and Communication GUI are available here.
- LogiCoA™ Solution Buck Converter Reference Program
- LogiCoA™ Solution Buck Converter Communication GUI (Excel file)
User's Guide
Application Note
- Analog-Digital Hybrid Power Supply Synchronous Buck DCDC Converter Operating Instructions DOWNLOAD
- Analog-Digital Hybrid Control Innovating Switching Power Supply Design DOWNLOAD
- Operating System for Switching Power Control MCU "RMOS" DOWNLOAD
- Serial Communication of RMOS and GUI Developing Manual DOWNLOAD
About the LogiCoA™ Brand
LogiCoA™ is the brand granted to the design philosophy of integrating digital elements to maximize the performance of analog circuitry. By fusing the merits of analog circuits with digital control, it brings out the full potential of circuit topology and contributes to higher efficiency of power utilization. ROHM thinks that this LogiCoA™ can be applied not only to the power supply field but also to the overall power solution as. We are looking at future applications for products and solutions.
LogiCoA™ is a trademark or registered trademark of ROHM Co., Ltd.
Design Resources
- LogiCoA001-EVK-001
- Schematic
- BOM
- Layout (PDF)
Specifications
| Board Number | Input Voltage Range | Output Voltage | Maximum Output Current | Switching Frequency | Maximum Duty | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LogiCoA001-EVK-001 | 7.5 - 38.0V | 5V | 5A | 160kHz | 80% |
Distribution Inventory
| Board Number | Distributor | Quantity Available |
|---|---|---|
| LogiCoA001-EVK-001 | - | - |
Key Components
| Board Number | Part Number | Product Category | Datasheet | Status | SPICE | LTspice® ? | Thermal Model | Symbol & Footprint | 3D STEP | Samacsys ECAD Library | Calc Tool | ROHM Solution Simulator |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LogiCoA001-EVK-001 | BD2320EFJ-LA | Gate Drivers | - | Active | - | - | - | |||||
| LogiCoA001-EVK-001 | BU7481SG | Operational Amplifiers | - | Recommended | - | - | - | |||||
| LogiCoA001-EVK-001 | LTR100LJZPFS | Current Detection Resistors | - | Recommended | - | |||||||
| LogiCoA001-EVK-001 | BD900N1WG-C | Linear Regulators | - | Recommended | - | - | - | |||||
| LogiCoA001-EVK-001 | BD950N1WG-C | Linear Regulators | - | Recommended | - | - | Solution Simulator | |||||
| LogiCoA001-EVK-001 | ML62Q2035-NNNTD(Taping) | LogiCoA™ MCUs | - | Recommended | - | |||||||
| LogiCoA001-EVK-001 | ML62Q2035-NNNTD(Tray) | LogiCoA™ MCUs | - | Recommended | - |