Buffer module 24V 20A DBUF20-24

Supercapacitor buffer module – reliable power supply in critical situations

The DBUF20-24 buffer module is an advanced device designed to provide uninterrupted power to 24V DC systems. It utilizes electrolytic capacitors instead of traditional batteries, eliminating the need for regular replacement and ensuring a longer lifespan. This solution is ideal for applications where even a short power outage can lead to serious consequences.

Construction and application

DBUF20-24 is a DIN rail module, making it easy to mount and integrate with existing installations. It is designed to work with regulated 24V DC power supplies, providing energy buffering in the event of an input voltage failure. This protects connected devices from sudden shutdown, data loss, or damage. The module finds application in industrial control systems, semiconductor devices, factory automation, and all types of electromechanical apparatus requiring a stable power supply.

Key features and benefits

• Maintenance-free buffering: The use of electrolytic capacitors eliminates the need for maintenance and replacement typical of batteries.
• Fast response time: The module switches to buffer mode instantly, minimizing system downtime. Buffering time with a 20A load is up to 350ms.
• Operational flexibility: The ability to choose between a constant 22V DC or dynamic (Vin-1V DC) operating mode adapts the module to different applications.
• Status indication: An LED indicates readiness, charging, or buffering, making diagnostics and system monitoring easier.
• Parallel connection capability: Allows extending the power backup time by connecting multiple modules in parallel.
• Wide operating temperature range: From -25°C to +75°C ensures reliable operation even in harsh environmental conditions.
• Built-in protections: Overvoltage, overload, and short-circuit protection guarantees the safety of the installation and connected devices.
• Signal indicators: Ready, Buffering, and Inhibit signals allow remote control of the module's operation and integration with monitoring systems.

Operating parameters and compliance with standards

The DBUF20-24 module is characterized by an output voltage of 24V DC and an output current of up to 20A. The input voltage range is 23-30V DC during charging. The device meets the safety requirements of IEC62368-1 and UL62368-1 standards, confirming its high quality and reliability. It also has a CE certificate, guaranteeing compliance with European directives.