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SynQor power engineering test lab and calculation design tools

Design Tools

Proprietary calculation spreadsheets and engineering utilities engineered to streamline power system design, verify input stability, and simplify output voltage trimming.

Technical Utilities

Engineering Calculators for Power Conversion Architecture

Accelerate your hardware engineering cycle with SynQor’s field-proven design spreadsheets. Developed by experienced power electronics design engineers, these tools simplify circuit optimization and component sizing for defense, aerospace, railway, and high-reliability industrial applications.

Voltage Trimming Tool

Trim Resistor Calculator

A comprehensive spreadsheet utility designed for hardware engineers to determine exact trim resistor values ($R_{\text{trim}}$) and external trim pin voltages across SynQor isolated DC-DC brick modules. Ensures precise output voltage adjustments while maintaining loop stability and safety margin compliance.

  • Supports both resistor-to-ground and external voltage trim configuration modes
  • Compatible across MilQor®, RailQor®, AeroQor®, and Industrial converter lines
  • Prevents over-voltage stress and preserves long-term thermal derating margins
  • Provides step-by-step resistance calculations for up-trim and down-trim targets
Format: XLSX Spreadsheet Download Tool
System Stability Analysis

Input Stability Calculator

Developed directly from the inequality test criteria detailed in SynQor's Input System Instability Application Note. Evaluates negative dynamic input impedance interactions between input EMI filters and power converters to prevent systemic line oscillations.

  • Analyzes EMI filter source impedance versus converter dynamic input resistance
  • Calculates optimal RC damping network values for input filter stages
  • Guarantees unconditional system stability across full load and line voltage swings
  • Helps clear MIL-STD-461, RTCA DO-160, and EN 50155 EMC qualification testing
Format: XLS Spreadsheet Download Tool
Engineering Excellence

Why Hardware Designers Rely on SynQor Calculation Tools

Regulated DC-DC converters present negative dynamic input impedance. When paired with external EMI filtering networks or long cabling runs, un-damped input stages can result in severe system oscillations, thermal shutdown, or failed EMC certification. SynQor's design utilities translate complex transfer functions into verified, practical component values.

Empirically Validated

Formulas are derived from full-scale laboratory qualification tests and confirmed across millions of deployed power modules worldwide.

First-Pass Compliance

Assists system integrators in achieving first-pass compliance with rigorous defense, aerospace, and railway electromagnetic standards.

Direct Support Access

Backed by SynQor's U.S.-based application engineering team for complex derating, thermal modeling, and system-level reviews.

Technical FAQ

Frequently Asked Questions by System Designers

Download our Trim Resistor Calculator spreadsheet. Select your specific SynQor converter part number and desired target output voltage. The tool automatically calculates the required external resistor value to connect between the Trim pin and (+Sense) or (-Sense), or outputs the exact control voltage required for active voltage driving.

Regulated DC-DC power modules act as constant power loads, exhibiting negative dynamic input resistance. If the peak output impedance of the upstream EMI filter exceeds the input resistance of the converter module, negative impedance oscillation occurs. The Input Stability Calculator evaluates these source-load impedance ratios to help size proper damping capacitor and resistor networks.

Yes. The mathematical models incorporate input voltage ranges and transient conditions defined under MIL-STD-704, MIL-STD-1275, RTCA DO-160G, and EN 50155, ensuring that calculated trim parameters and filter stability margins hold true across severe operational extremes.

Have a Complex Power Architecture to Qualify?

Our U.S.-based application engineers can perform a complete power chain analysis—from input EMI filter stability to output voltage trimming and derating—before you freeze your PCB layout.

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