DC-DC Step-down Supply
Product Overview:
LCX Power-YDJ DC-DC step-down power supply belongs to communication base station & off-grid no-power area series.
It adopts isolated buck topology and full-digital DSP closed-loop control.
It converts high-voltage fluctuating DC from photovoltaic arrays or high-voltage battery banks into stable low-voltage adjustable DC output for communication loads and backup storage batteries.
Modular design supports multi-unit parallel redundancy expansion with active current sharing. It can work cooperatively with PV, battery and diesel generator systems.
Featuring high conversion efficiency, low output ripple, strong anti-disturbance capability and wide-temperature environmental adaptability, it provides reliable low-voltage DC power guarantee for remote communication stations, off-grid DC micro-grids and various field monitoring terminals.
Typical Applications：
· Remote 4G/5G communication base station low-voltage DC power supply
· Off-grid DC micro-grid system in mountainous and pastoral areas
· PV-battery hybrid off-grid power supply system
· Meteorological, hydrological and environmental monitoring field equipment power supply
· Unattended monitoring terminals for border outposts and oil-gas fields
· DC step-down unit for new-energy and energy-storage test sites
Technical Specifications:
1. Topology & Control Architecture
Isolated DC DC buck topology, full digital DSP closed loop control. Modular power unit design, multi module parallel capacity expansion with active current sharing function.
2. Electrical Performance
· Wide range high voltage DC input, adapt to large amplitude voltage fluctuation of photovoltaic and battery working conditions
· Step down low voltage DC output, continuously adjustable (24V /48V telecom voltage grade optional)
· Voltage setting accuracy ≤±0.5%FS；Output ripple coefficient ≤0.8%
· Max conversion efficiency ≥96.5%
· Fast dynamic response, restrain output fluctuation under input and load step change
3. Working Modes & Battery Management
Support constant voltage(CV), constant current(CC), constant power(CP) modes with seamless mode switching. Built in intelligent charging logic, compatible with lithium ion, sodium ion and lead acid batteries, realize float charge & equalizing charge. Can connect with upper layer EMS for system energy scheduling.
4.Comprehensive Protection Functions
DC input over voltage / under voltage, reverse connection protection; DC output over voltage, over current, short circuit, over temperature protection. Fault latch off and fault event record function, protect front end power source and rear end communication loads.
5.HMI & Communication Interface
Color touch screen HMI with Chinese English bilingual display. Real time display of input / output voltage, current, power and alarm information. Standard RS485, Ethernet interfaces, Modbus protocol, support remote monitoring, parameter setting and data uploading for unattended field sites.
6.Cooling & Environmental Adaptability
Intelligent temperature controlled air cooling; optional outdoor cabinet version for higher protection grade. Operating temperature: 20℃ ~ +55℃. Dust proof, moisture proof design, adapt to mountain, pastoral and other harsh field working conditions.
Technical Parameters and Selection
Technical Parameters and Selection
