1. Description
The RBBA3000-50 is a high-current (50A) intelligent buck–boost converter based on an internal digital signal processor. The use of a dedicated DSP controller allows additional features to be implemented, making this product especially useful in many practical power supply applications, including purely analog power supplies. Besides a very fast response to transient loads, the DSP core also supports a comprehensive set of output protections including short circuit, adjustable output current limit, over-voltage fault protection, and over-temperature protection.
The input voltage range is from 9V to 60VDC with a 100ms surge withstand capability of up to 80VDC. This extensive input voltage range makes the RBBA3000-50 advantageous for battery-powered systems based on lead-acid or lithium-Ion battery packs in which the charger supply voltage can surge if the battery load is disconnected suddenly. The input features an under-voltage lock-out (UVLO) that disables the converter if the input is below 6V (typ.).
There is a growing trend away from using AC uninterruptible power supplies (UPS) and towards DC backed-up supplies for ensuring functionality during a power outage. The usage of an AC supply to charge a battery or supercapacitor energy storage device and then using that stored energy to deliver AC to power the application in an emergency is very inefficient for ensuring supply continuity. The power losses in the DC charging circuit and the following AC inverter are significant. Thus, most UPSs can only store enough energy to run the system for a few minutes. This is sufficient for all computers to power down but rarely so for mechanical systems such as robotics or assembly machines to complete the current task and move to the resting position to allow rapid restarting when the mains power resumes. In contrast, operating the entire system with a high-current 48VDC allows direct battery back- up to be used with sufficient power to allow even heavy industrial assembly plants to reset safely. The RBBA3000-50 is an ideal component for such systems and can deliver a stable 48V output from an input voltage that is higher, equal to, or lower than 48VDC.
The converter is built into a standard half-brick case with an aluminum baseplate for efficient thermal bonding with a heatsink. With appropriate cooling, the RBBA3000-50 can be used up to full load over the entire -40°C to +85°C industrial ambient temperature range. The RBBA3000-50 datasheet includes calculation examples for the necessary power derating depending on the size of the available heatsink or the altitude of the application. Furthermore, four threaded inserts are provided to allow the converter to be securely fixed to both the PCB and the heatsink.
All power supplies must meet strict limits for radiated and conducted EMI (Electro-Magnetic Interference). The RBBA3000-50 datasheet includes suggestions for the required external EMC filtering to meet the EN55032 Class A.
The input voltage range is from 9V to 60VDC with a 100ms surge withstand capability of up to 80VDC. This extensive input voltage range makes the RBBA3000-50 advantageous for battery-powered systems based on lead-acid or lithium-Ion battery packs in which the charger supply voltage can surge if the battery load is disconnected suddenly. The input features an under-voltage lock-out (UVLO) that disables the converter if the input is below 6V (typ.).
There is a growing trend away from using AC uninterruptible power supplies (UPS) and towards DC backed-up supplies for ensuring functionality during a power outage. The usage of an AC supply to charge a battery or supercapacitor energy storage device and then using that stored energy to deliver AC to power the application in an emergency is very inefficient for ensuring supply continuity. The power losses in the DC charging circuit and the following AC inverter are significant. Thus, most UPSs can only store enough energy to run the system for a few minutes. This is sufficient for all computers to power down but rarely so for mechanical systems such as robotics or assembly machines to complete the current task and move to the resting position to allow rapid restarting when the mains power resumes. In contrast, operating the entire system with a high-current 48VDC allows direct battery back- up to be used with sufficient power to allow even heavy industrial assembly plants to reset safely. The RBBA3000-50 is an ideal component for such systems and can deliver a stable 48V output from an input voltage that is higher, equal to, or lower than 48VDC.
The converter is built into a standard half-brick case with an aluminum baseplate for efficient thermal bonding with a heatsink. With appropriate cooling, the RBBA3000-50 can be used up to full load over the entire -40°C to +85°C industrial ambient temperature range. The RBBA3000-50 datasheet includes calculation examples for the necessary power derating depending on the size of the available heatsink or the altitude of the application. Furthermore, four threaded inserts are provided to allow the converter to be securely fixed to both the PCB and the heatsink.
All power supplies must meet strict limits for radiated and conducted EMI (Electro-Magnetic Interference). The RBBA3000-50 datasheet includes suggestions for the required external EMC filtering to meet the EN55032 Class A.
