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:

Current Share (Parallel Operation) and Redundancy for VPT DC-DC Converters

This document provides an overview of the current share function, how to optimize current share, examples of current share power system configuration, and how to make a parallel network redundant.

VSC Series Space COTS DC-DC Converters and EMI Filters

VPT’s VSC Series DC-DC converters are designed to meet the requirements for suborbital applications, low Earth orbit (LEO) satellites, and NASA class D missions, making the VPT’s VSC Series DC-DC converter the leading, low-cost, commercially available power solution for the NewSpace market.

Selecting the Correct Level of DC-DC Converter for Your Application

Review the vital parameters to know when selecting a Hi-Rel COTS, full Mil Spec, or space DC-DC converter for your power system.

Increasing Turn-On Delay Time for VPT DC-DC Converters

This document provides an overview on how to increase the turn-on delay time on VPT DC-DC converters, the factors that affect the turn-on delay time, and shows turn-on delay time waveforms.

VXR Series Output Voltage Ripple Reduction

This presentation reviews filter techniques to reduce voltage ripple with VPT’s VXR Series power supplies. These techniques generally apply to all VPT products.

VPT Series DC-DC Converters and Power Accessory Modules

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.

User Guide for VPT DC-DC Converters

This document serves as a basic user guide to VPT’s DC-DC converter products.

Hand Soldering Guidelines for VPT DC-DC Converters and Accessory Products

This document details the proper processes for hand soldering products into systems and applications while ensuring product safety and maintaining functional integrity.

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 Guidelines for DC-DC Converters and Accessory Products

This document details the proper processes for trimming leads of products before integration into systems and applications while ensuring product safety and maintaining functional integrity.

MIL-STD-461 Compliance Requirements for VPT 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.

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.

Point-of-Load Power Solutions for Low Voltage Systems

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.

Deploying a Distributed Power Architecture with Point of Load DC-DC Converters

Today’s commercial avionics, military and space power electronics need higher performance while decreasing size, weight and cost. One way to decrease the power footprint is to move to a distributed power architecture that uses point of load converters, which offer the advantages of smaller size, higher efficiency, and better performance than the isolated power converter method.

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

In this application note, you’ll learn how to protect your power system from dangerous inrush currents. A variety of methods for controlling inrush current are discussed in detail.

Lead Product and Quality Assurance Overview for VPT Hybrid DC-DC Converters and Accessory Products

This application note details VPT’s QA policies, procedures, and certifications for manufacturing hybrid DC-DC power converters. Environmental screening options and VPT’s ITAR control program are also discussed in this document.

Product and Quality Assurance Overview for VPT Hi-Rel COTS DC-DC Converters and Accessory Products

This application note details VPT’s QA policies, procedures, and certifications for manufacturing COTS DC-DC power converters. Environmental screening options and VPT’s materials control program are also discussed in this document.

Mounting Considerations for Gullwing Style Packages

VPT offers several Hybrid DC-DC converters in a surface mountable gullwing package. This document
discusses mounting considerations for these gullwing converters.

Learn How to Properly Utilize your EMI Filter Presentation

This document details EMI filter basics, MIL-STD-461 conducted emissions measurements, layout recommendations and precautions, and conducted susceptibility.