VXR Series Output Voltage Ripple
Classification: DC-DC Converter ChipsVPT's Director of Engineering, Jeremy Ferrell, explains how to reduce the output voltage ripple.
Methods to Reduce Output RippleSteve Butler discusses DC-DC converter output ripple, its characteristics and how it can be reduced using VPT products.
Connecting DC-DC Converters in a Series to Obtain Various Output VoltagesJeremy Ferrell explains how to obtain multiple output voltages using VPT DC-DC products.
MIL-STD-461 Conducted EmissionsSteve Butler discusses how to meet MIL-STD-461 emission requirements using VPT EMI filters. Techniques for avoiding EMI problems in board layout are discussed. Demonstrations in the lab with EMI analyzers illustrate the approach.
MIL-STD-1275 and MIL-STD-704A Compliance Issues of DC-DC ConvertersJeremy Ferrell on the MIL-STD-1275 and MIL-STD-704A and their compliance to the VPT modules.
Understanding Overload & Short Circuit: Protection of DC-DC ConverterJeremy Ferrell demonstrates how VPT products operate in instances of overload and short circuit.
DC-DC Converter PIND Testing
Classification: DC-DC Converter ChipsMichael Lin, Product Manager at VPT Power, demonstrates particle impact noise detection (PIND) testing performed on VPT hybrid Class K DC-DC converters.
Inrush Currents in DC-DC Converters
Classification: DC-DC Converter ChipsLeonard Leslie discusses the details of inrush currents in DC-DC converters and the VPT solutions that control inrush currents.
High Reliability COTS DC-DC Converters: VXR Series
Classification: DC-DC Converter ChipsJeremy Ferrell, Manager of Standard Products at VPT, gives an overview of the VXR Series of DC-DC converters designed for harsh military and commercial avionics programs. http://www.vptpower.com/
Tour VPT's R&D FacilityTour VPT's state-of-the-art R&D facility and headquarters in Blacksburg, VA to learn about our engineering process and comprehensive quality controls.
How to Reduce DC-DC Converter Output Ripple
Classification: DC-DC Converter ChipsSteve Butler, V.P. of Engineering at VPT, discusses the definition and causes of common mode and differential mode output ripple and simple, effective ways to control output ripple.
VPT100-2800 DC-DC Converter Technical Overview
Classification: DC-DC Converter ChipsCalloway Cass, Sr. Design Engineer at VPT, provides a detailed technical description and demonstration of VPT's VPT100-2800 Series DC-DC power converters.
DC DC Converters: Trimming Output Voltage
Classification: DC-DC Converter ChipsCalloway Cass, Sr. Design Engineer at VPT, discusses how to adjust the output voltage up or down to achieve non-standard output voltages from a DC-DC converter.
DC-DC Converters: Inrush Current
Classification: DC-DC Converter ChipsLeonard Leslie, Sr. Design Engineer at VPT, reveals technical solutions for controlling inrush current in DC-DC power converters.
DC-DC Converters: Constructing High Power Systems
Classification: DC-DC Converter ChipsSteve Butler, V.P. of Engineering at VPT, discusses how to construct high power systems using multiple DC-DC converters in a distributed power system.
DC-DC Converters: Synchronizing Multiple Converters
Classification: DC-DC Converter ChipsLeonard Lesline, Sr. Design Engineer at VPT, discusses the methods for synchronizing DC-DC converters to the same switching frequency.
DC-DC Converters: Cross Regulation Effects
Classification: DC-DC Converter ChipsSteve Butler, V.P. of Engineering at VPT, discusses the effects of cross regulation on dual output DC-DC converters.
DC-DC Converters: Connecting a Series for Various Output Voltages
Classification: DC-DC Converter ChipsJeremy Ferrell, Sr. Design Engineer at VPT, describes how to connect DC-DC converters in a series to obtain various output voltages.
Advantages of Procuring Hybrid Microcircuits to an SMD
Classification: Power SuppliesVPT discusses the definition, purpose, and process of the Defense Supply Center Columbus (DSCC) Standard Microcircuit Drawing (SMD) program and the advantages of procuring hybrid microcircuits to an SMD.
MIL-PRF-38534: Specification Overview
Classification: Power SuppliesVPT provides an overview of the military performance specification MIL-PRF-38534 and how it pertains to VPTs hybrid microcircuit DC-DC converters and EMI filters.
DC-DC Converter Chips
DC-DC Converters: Inhibit Pin Operation: Callaway Cass, Sr. Design Engineer at VPT, discusses and demonstrates the inhibit pin operation of DC-DC converters.
Hybrid DC-DC Converters: Mounting & Thermal Considerations: Steve Butler, V.P. of Engineering at VPT, discusses mounting hybrid DC-DC converters with topics including down-leaded mounting, side-leaded mounting, dead-bug mounting, mounting for high vibration environments, thermal path, & thermal transfer.
Space-Qualified DC-DC Converters: SVR Series: Leonard Leslie, Manager of Space Programs at VPT, introduces the SVR Series of DC-DC converters, point-of-load converters, and EMI filters for use in LEO, MEO, GEO, deep space, and launch programs.
DC-DC Converters: Circuit Protection Features: Callaway Cass, Sr. Design Engineer at VPT, discusses the operation of vital protection features of DC-DC power converters with topics including soft start, undervoltage lockout, over current limit, and short circuit protection.
MIL-STD-1275 & MIL-STD-704A: DC-DC Converter Compliance: Jeremy Ferrell discusses the definition of military standards MIL-STD-1275 and MIL-STD-704A, converter operation through various transient voltages, and clamping voltages with VPTi10 and VPTPCM products to meet standard specifications.
DC-DC Converters: Overload & Short Circuit Protection: Jeremy Ferrell discusses how DC-DC converters respond to overload and short circuit current conditions, demonstrates soft start function with no overshoot, and offers design advice regarding power dissipation and heat sinking
Point-of-Load DC-DC Converters: DVPL 20A: Introducing the DVPL 20A Point-of-Load DC-DC Converter and discussing its product features and usage.
DC-DC Converters: Measuring Line & Load Regulation: Jeremy Ferrell, Manager of Standard Products at VPT, discusses the definitions of line and load regulation of DC-DC power converters, critical test set-up, and connection considerations.
High Capacitive Load DC-DC Converters: Startup Characteristics: Calloway Cass discusses the startup characteristics of DC-DC power converters with a high capacitance load, which are used to reduce the output ripple, improve the peak transient response, and to supply high pulse current loads.
DC-DC Converters: Startup Characteristics: Steve Butler describes the various startup characteristics and waveforms of DC-DC power converters. Topics include the undervoltage lockout circuit, output softstart circuit, startup delay times, and various source and load characteristics.
DVPL Point-of-Load DC-DC Converter: Tracking & Sequencing: Jeremy Ferrell, Sr. Design Engineer at VPT, gives an overview of DVPL Point-of-Load converter functions along with detailed instructions for using the track pin and sequencing function.
Dual Output DC-DC Converters: Measuring Cross Regulation: Steve Butler discusses how to accurately measure the cross regulation of dual output DC-DC converters, demonstrates a dual output DC-DC power converter under balanced and imbalanced load conditions.
DC-DC Converters: Measure & Manage High Source Impedance: Jeremy Ferrell, Manager of Standard Products at VPT, discusses the effects of high source impedance on DC-DC power converters, demonstrates the measurement of it, and offers tips for mitigating any negative effects of impedance in your power system.
Space-Qualified Point-of-Load DC-DC Converters: SVGA Series: Leonard Leslie introduces the SVGA point-of load DC-DC converter for space. The SVGA is radiation hardened to 100 krads (Si) and available on DLA SMDs. VPT's complete distributed power system for space applications is also featured in this video.
Inrush Current Limiter: DVCL Operation Demonstration: Steve Butler demonstrates the operation of the DVCL inrush current limiter, a front end power protection device for avionics, military, or other critical reliability applications.
Bus Converter Operation: VPTHVM 270: Jeremy Ferrel, Manager of Standard Products, provides a technical explanation and demonstration of VPT's VPTHVM 270V step-down to 28V bus conversion solution.
MIL-STD-461: Conducted Emissions Discussion: Steve Butler, V.P. of Engineering at VPT, explains conducted emissions and filtering, the definition of MIL-STD-461 and subcategories CE01, CE02, CE101 and CE102, and testing your system for EMI.
MIL-STD-1275: Achieving Compliance with the VPTPCM-12 Power Conditioning Module: Jeremy Ferrell, Manager of Standard Products at VPT discusses MIL-STD-1275 and the usage of the VPTPCM-12 to achieve compliance to this standard.