Step-up DC/DC converter

high-powerregulatedrack-mount

Product overview
The VOITA rack-mount DC-DC step-up converter is designed for industrial and communication systems requiring stable DC voltage boosting. It can operate as a standalone supply or in parallel with current-sharing for higher capacity. The unit fits a 2U, 19 inch equipment rack and provides high efficiency with low electromagnetic interference.

Basic specifications

• DC input: 48 VDC (typical model)
• DC output (typical): 220 VDC (series supports DC220V / DC110V / DC48V / DC24V depending on model)
• Output current: 10 A (also available in 20 A and other ratings)
• Allowable input range (48 V models): 43 V – 56.7 V
• Signal port: RS485 (optional)
• Form factor: 2U, 19 inch rack-mount

Technical features

• Overvoltage, over-current and short-circuit protection
• High-temperature protection
• Automatic current-sharing for parallel operation
• Optional RS485 communication with real-time monitoring
• Optional 4-way dry contact: output state, abnormal output voltage, internal temperature, low battery voltage

Operational notes

• Follow the manufacturer's instruction manual for installation and operation.
• Observe correct polarity when connecting DC input/output.
• Ensure proper grounding to prevent electric shock and equipment damage.
• Avoid sustained overload to prevent faults.
• Keep the manual for maintenance and troubleshooting.

Selected technical index
Efficiency: ≥85% (table); Full-load efficiency: ≥90% (product statement)
OCP tolerance: rated ±5%
Load/source change rate: ≤±0.5%
Temperature coefficient: 150 PPM/℃
Peak ripple Vpp ≤ 100 mV; switching ripple Vpp ≤ 60 mV; noise ≤ 1 mV
Operating temperature: 0–45℃; Humidity: ≤95% RH non-condensing; Altitude: ≤2000 m
Hi-pot: DC 2500 V; Leakage current: < 10 mA

Input undervoltage / overvoltage protection points
DC220V: LVP 180 V, OVP 270 V
DC110V: LVP 90 V, OVP 140 V
DC48V: LVP 40 V, OVP 60 V
DC24V: LVP 20 V, OVP 32 V

Floating / equalizing charge ranges and defaults
Floating charge adjustment ranges: DC220V 180–230V; DC110V 99–132V; DC48V 43–56.7V; DC24V 22–27.6V
Default floating output: DC220V 220V; DC110V 121V; DC48V 52.8V; DC24V 26.4V
Equalizing charge adjustment ranges: DC220V 192–245V; DC110V 110–132V; DC48V 48–57.6V; DC24V 24–29.8V
Default equalizing output: DC220V 227V; DC110V 127V; DC48V 56.4V; DC24V 28.2V
Output voltage protection point examples: DC220V 245V ±1V; DC110V 145V ±1V; DC48V 58V ±1V; DC24V 30V ±1V

Port definition (rear panel)
DC input: DC input+ / DC input-
DC output: DC output+ / DC output-
Dial switch: B0–B3 binary address (0–15)
9-pin terminal: RS485 A / B
Fault dry contacts: COM; BATTERY FAIL; TEMP FAIL; OUT VOLTAGE FAIL; OUT FAIL
Current sharing interface: SH+ / SH- (for parallel operation)

Startup steps (summary)

• Connect DC output to the load.
• Connect DC input observing polarity.
• Connect RS485 if communication is required.
• Turn on the power switch to start the unit.

Maintenance and fault handling (summary)

• Incorrect output voltage: adjust floating/equalizing potentiometer.
• Fault indicator active: check battery/output for over-discharge, short, or over-current.
• No output at load: inspect output wiring for open circuit.
• Unstable output: verify input voltage and check for overload.
• No output: inspect output wiring, input fuse and input supply.

Technical specifications

• Brand: VOITA
• Model family: Rack Mount DC Step up Converter series (DC220V / DC110V / DC48V / DC24V options)
• Nominal DC input: 48 VDC (typical)
• Allowable input range (48V models): 43–56.7 V
• Nominal DC output (example): 220 VDC
• Output current: 10 A (example) — also available in 20 A
• Communication: RS485 (optional)
• Dimensions: 2U, 19 inch rack-mount
• Efficiency: ≥85% (table); full-load ≥90%
• Protections: OVP, OCP, short-circuit, high temperature
• Parallel operation: automatic current sharing (SH+/SH-)
• Operating: 0–45℃; Humidity ≤95% RH non-condensing; Altitude ≤2000 m
• Safety: Hi-pot DC2500V; Leakage current <10 mA