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Application Notes

Written by engineers for engineers, our application notes outline critical issues to consider for the safe and successful incorporation of DC-DC converters into your critical reliability systems.

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New! Designing VME Power Systems from Standard Modules
With each new military system design system design come the same challenges: more processing power, tighter specs, and shorter development time. Continual advances in system performance often require similar advances in the power system. VME architecture is common in many military applications, and can be readily built around standard or custom circuit cards…
Inrush Current in DC-DC Converters
Large inrush currents might be governed by a system level specification. There is a concern that high spike currents can create electromagnetic interference in adjacent circuitry, or trip an upstream circuit breaker or the over-current protection of a solid state power controller…
The Next Generation in DC-DC Converter COTS Technology
COTS, or "commercial off the shelf," hardware can offer the latest technology, is readily available, minimize system development cycles, ad reduce acquisition costs. The challenge is to take advantage of commercially available hardware without sacrificing system performance or reliability…
Point-of-Load Power Solutions for Low Voltage Systems (HERO Power System)
The latest high performance FPGAs, ASICs and processors require increased high performance from the power supply, including low voltages, high currents, tight regulation, fast transient response, and even supply voltage sequencing. VPT’s High Efficiency Reliability Optimized (HERO) Power System includes a set of hybrid DC-DC allow the military designer to assemble the smallest, most reliable and most efficient system possible…
Meeting Military Requirements for EMI and Transient Voltage Spike Suppression
Military and aerospace engineers face several challenges with respect to electromagnetic interference (EMI) and transient voltage compliance: stringent military requirements, standards that do no always agree with each other, etc. Lack of proper EMI control can result in interference such as unwanted noise in communication and computing equipment as well as false triggering and faulty readings in sensor circuits…
Thermal Considerations of Hybrid DC-DC Power Converters
VPT's DV series Hybrid DC-DC converters are rated for the full military temperature range of -55°C to +125°C and can be operated at full rated power with in that range as long as the power dissipation and temperature rise is properly addressed. This document discusses the thermal management considerations for various assembly configurations of hybrid DC-DC converters…
MIL-STD-461 Compliance Requirements for Hybrid DC-DC Converters
The control of electromagnetic interference for electronic subsystems is governed by MIL-STD-461 for the US Department of Defense. This document details compliance to revisions C, D, and E.
Proper Temperature Measurement and PCB Mounting for DC-DC Power Converters
This short form application note describes simply the proper temperature measurement locations and proper PCB mounting of converters to ensure that heat is measured and removed correctly to keep the converter at or below the maximum rated operating temperature.
Lead Trimming and Hand Soldering Guidelines for VPT DC-DC Converters
This document details the proper processes for trimming leads and hand soldering products into systems and applications while ensuring product safety and maintaining functional integrity.
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