V24A12T400BN
400W isolated DC-DC converter with 24V input and adjustable 12V output for industrial and data center applications.
Product Overview
Description
The V24A12T400BN is a 400W isolated DC-DC converter with 24V nominal input voltage.
Features adjustable output voltage from 9.6V to 15V with tight regulation and low output noise.
High-efficiency design up to 92% with excellent thermal performance in ChiP package.
Product Series
V
Primary Application
Industrial automation
Key Features
- High power density up to 730W per cubic inch
- 4,242VDC isolation for safety isolation
- Integrated thermal pad for direct heatsinking
- Output voltage trim and remote sense
- Overvoltage, overcurrent, overtemperature protection
- Parallel operation with current sharing
Specifications
| Input Voltage | 18-36V DC (24V nominal) |
|---|---|
| Output Voltage | 12V adjustable 9.6-15V |
| Output Power | 400W |
| Efficiency | Up to 92% |
| Isolation | 4,242VDC |
| Package | ChiP, Through-hole |
Applications
Industrial automation
Industrial automation and control
Data center power distribution
Electronic system design
Battery-powered equipment
Battery and charging management
Telecommunications infrastructure
Communication and interface
Medical devices
Medical electronics
FAE Expert Insights
"The V24A12T400BN is my go-to recommendation for 24V industrial power applications. I've specified this converter in numerous factory automation and industrial control systems. The 92% efficiency is excellent for isolated designs, and the integrated thermal pad makes thermal design straightforward. In a recent PLC control system, this converter delivered 400W in a compact form factor that fit perfectly in the existing enclosure. The trim and remote sense features are valuable for compensating voltage drops in distributed power architectures. The parallel capability is useful for applications requiring higher power or redundancy."
Excellent choice for 24V industrial applications with outstanding power density
— Michael Chen, BeiLuo
Frequently Asked Questions
What is the input voltage range of V24A12T400BN?
The V24A12T400BN input voltage specifications: Nominal input: 24V DC; Operating range: 18V to 36V DC; Absolute maximum: 50V DC (survival without damage); Transient capability: 50V for 100ms. The converter maintains regulation and protection across the full operating range. For 24V battery systems, ensure the battery voltage during charging (up to 29V for Li-ion) stays within operating range. For automotive 24V systems, account for load dump transients and use appropriate TVS protection.
Contact us for input transient protection recommendations and system design guidance.
How do I mount V24A12T400BN to a heatsink?
Mounting procedure for V24A12T400BN: Apply thermal interface material (TIM) to the thermal pad area on bottom of module; Place module on heatsink with thermal pad aligned; Secure with M3 or similar screws per recommended torque (0.56-0.79 Nm); Ensure flatness of mounting surface < 0.1mm. Important notes: Don't overtighten screws - can damage module; Use spring washers to maintain pressure over thermal cycles; Allow TIM to spread during first thermal cycles; Consider using thermal compound instead of pads for maximum performance. Vicor provides detailed mounting instructions in the product datasheet.
Contact us for mounting guidelines and thermal interface recommendations.
Can I adjust the output voltage of V24A12T400BN?
Output voltage adjustment for V24A12T400BN: Trim range: 9.6V to 15V DC; Trim method: External resistor connected to TRIM pin; Calculation: Vicor provides trim resistor formulas in datasheet; Remote sense: Compensates for voltage drop in output connections (up to 0.5V). Trim resistor connection: Connect resistor from TRIM pin to output return; Calculate value using Vicor trim equations; Accuracy: Output regulation maintained within specified tolerance across trim range. For precise output voltage, use the trim feature and verify with accurate measurement during setup.
Contact us for trim resistor calculation assistance and output voltage setting guidance.
What protection features does V24A12T400BN include?
Protection features of V24A12T400BN: Input overvoltage lockout - shuts down if input exceeds ~38V; Output overvoltage protection - limits output if regulation fails; Output overcurrent protection - constant current limiting at ~125% rated current; Overtemperature protection - thermal shutdown at ~125°C case temperature; Undervoltage lockout - prevents operation if input drops below ~16V. Protection behavior: Most faults result in hiccup mode operation with automatic restart; Thermal shutdown requires cool-down before restart; Latched protection on some fault conditions. These protections ensure reliable operation in demanding environments.
Contact us for protection behavior details and application-specific protection requirements.
How efficient is V24A12T400BN at partial load?
V24A12T400BN efficiency characteristics: Peak efficiency: ~92% at 50-75% load; Full load efficiency: ~91.5%; Half load efficiency: ~90.5%; Quarter load efficiency: ~87%. For optimal efficiency: Size converter for 50-80% of rated load; Consider lower-power model if load is consistently light; Use multiple smaller converters if load varies significantly. Vicor efficiency curves show detailed performance vs load. At typical industrial loads (60-80%), efficiency remains above 91%. For battery-powered applications with variable load, efficiency at low load becomes important.
Contact us for efficiency analysis based on your specific load profile.