V48A24T500BL
500W isolated DC-DC converter with 48V input and 24V output, optimized for 48V data center and telecom applications.
Product Overview
Description
The V48A24T500BL is a 500W isolated DC-DC converter designed for 48V power distribution systems.
Provides regulated 24V output from 36-55V input with high efficiency up to 93%.
Optimized for 48V bus architectures common in data centers, telecom, and battery-backed systems.
Product Series
V
Primary Application
48V data center power distribution
Key Features
- Optimized for 48V power bus architectures
- 93% peak efficiency for reduced power loss
- Low profile 9.3mm package height
- Integrated thermal pad for heatsink mounting
- PMBus compatible for monitoring and control
- Rugged design for industrial environments
Specifications
| Input Voltage | 36-55V DC (48V nominal) |
|---|---|
| Output Voltage | 24V fixed |
| Output Power | 500W |
| Efficiency | Up to 93% |
| Isolation | 2,250VDC |
| Package | ChiP, Low profile |
Applications
48V data center power distribution
Electronic system design
Telecom infrastructure
Electronic system design
Battery backup systems (BBU)
Battery and charging management
LED lighting power
Electronic system design
Industrial 24V power distribution
Industrial automation and control
FAE Expert Insights
"The V48A24T500BL is specifically designed for 48V power architectures, which are increasingly popular in data centers due to efficiency advantages. I've worked on several 48V data center designs where this converter played a key role. The 93% efficiency is excellent for this power level, and the low-profile package is valuable for blade server applications where board real estate is premium. The PMBus compatibility is a major advantage for intelligent power management - we can monitor voltage, current, and temperature, and even control output on/off remotely. For 48V bus systems, this is my top recommendation for 24V distribution."
Purpose-built for 48V data center architectures with PMBus intelligence
— David Wang, BeiLuo
Frequently Asked Questions
What are the advantages of 48V power distribution?
48V power distribution advantages: Efficiency: Lower I2R losses compared to 12V for same power; Cable size: Smaller conductors needed for same power; Safety: 48V is considered safe voltage (no special safety training required); Standardization: 48V widely used in telecom and data centers; Ecosystem: Large ecosystem of 48V products and components. Comparison: 48V vs 12V for 5kW: At 12V, current is 417A requiring large cables; At 48V, current is 104A with significantly smaller cables; Power loss at same cable resistance is 16x lower at 48V. For high-power applications, 48V bus significantly reduces distribution losses and costs.
Contact us for power architecture analysis comparing 48V vs other bus voltages.
How do I program the V48A24T500BL using PMBus?
PMBus programming for V48A24T500BL: Connect PMBus adapter to converter's PMBus pins; Use Vicor software tools or standard PMBus commands; Programmable parameters: Output voltage trim; Turn-on/off delays; Fault response; Output voltage Margining; Monitored values: Output voltage, current, temperature; Input voltage status. PMBus address: Set using address pins or programming; Default address varies by model. Vicor provides comprehensive PMBus documentation and example code. The PMBus interface enables sophisticated power management and system integration.
Contact us for PMBus programming guide and software tool access.
Can I use V48A24T500BL in parallel for redundancy?
Parallel operation of V48A24T500BL: Supported for both increased power and N+1 redundancy; Enable droop load sharing between paralleled units; Use same model from same production batch for best matching; Proper layout critical for current sharing. Redundancy design: N+1 configuration - one extra converter for fault tolerance; ORing diodes or controllers for bus isolation; Total load should not exceed N converters at full load; Parallel controllers available for sophisticated redundancy. Vicor provides paralleling guidelines for this converter series.
Contact us for paralleling guidelines and redundancy architecture recommendations.
What is the hold-up time requirement for V48A24T500BL?
Hold-up time considerations: Hold-up time - duration converter maintains output during input interruption; V48A24T500BL typical hold-up: ~10ms at full load with standard input capacitance; Extended hold-up: Add input capacitors per Vicor guidelines. For critical applications: Calculate energy storage needed: Energy (J) = P_out x hold-up_time / efficiency; Add film capacitors at converter input; Consider backup battery for extended hold-up. Standards: Some standards require specific hold-up times (e.g., 20ms for IT equipment). Vicor provides formulas for calculating required capacitance.
Contact us for hold-up time calculations and capacitor selection guidance.
What EMI performance does V48A24T500BL meet?
EMI performance of V48A24T500BL: Meets EN 55032 Class B and FCC Part 15 Class B with appropriate filtering; Conducted emissions: External EMI filter recommended for strict compliance; Radiated emissions: Shielding may be needed for sensitive applications. EMC design tips: Use recommended input/output filter components; Proper grounding of chassis and signal returns; PCB layout guidelines in datasheet; Ferrite beads on cables may help. Vicor provides EMI filter recommendations and layout guidelines. For pre-compliance testing, contact our FAE team.
Contact us for EMI filter recommendations and pre-compliance testing support.