VTM48EF030T070A00 vs VTM48EF040T050B00

VTM48EF040T050B00 → VTM48EF030T070A00

Main Differences
1. Output Voltage Difference

VTM48EF040T050B00

Provides 4V output voltage
Suitable for systems requiring higher intermediate voltage conversion
Maximum output current: 50A

VTM48EF030T070A00

Provides 3V output voltage
Designed for lower-voltage, higher-current applications
Maximum output current: 70A
2. Current Capability Difference

The VTM48EF030T070A00 supports a higher output current capability:

VTM48EF040T050B00 → 50A output
VTM48EF030T070A00 → 70A output

Therefore, the VTM48EF030T070A00 is more suitable for applications requiring higher current density, while the VTM48EF040T050B00 is better suited for systems needing a 4V output rail.

Replacement Recommendation

These two models cannot be considered direct drop-in replacements because the output voltage is different.

If the system requires a 4V output rail, choose VTM48EF040T050B00.
If the system requires a 3V output rail with higher current capability, choose VTM48EF030T070A00.

Before replacement, engineers should verify:

Required output voltage
Load current requirement
Downstream converter compatibility
Control loop and power architecture design
Application Areas

Typical applications include:

High-performance computing power systems
Telecom infrastructure
Aerospace and defense electronics
Industrial power conversion
High-current processor and FPGA power supplies
Distributed power architectures
Conclusion

The VTM48EF040T050B00 and VTM48EF030T070A00 share the same VICOR VTM48 platform and high-density power conversion technology, but they target different power requirements.

VTM48EF040T050B00 = 4V / 50A solution
VTM48EF030T070A00 = 3V / 70A high-current solution

The correct selection depends primarily on the required output voltage and current of the end application.