Next-Generation Testing Solutions
Programmable DC Electronic Loads for Critical R&D and Production Validation
Power conversion equipment, battery packs, and renewable energy storage systems face rigorous performance, safety, and longevity requirements. Astrodyne TDI’s Dynaload® series delivers industry-leading accuracy, ultra-fast transient response, and rugged durability for mission-critical testing facilities worldwide.
For more than four decades, senior test engineers and procurement managers have relied on Dynaload® high-voltage electronic loads to evaluate dynamic application loads, simulate stress profiles, and perform accurate lifecycle burn-in testing. Available in versatile air-cooled chassis and high-density liquid-cooled architectures, these systems mitigate thermal degradation while providing millisecond-level transient execution.
Key System Capabilities
- Modular Power Scaling: Configurable from 800W up to 120kW via Master/Slave mainframe chaining (up to 10 mainframes).
- Multi-Cooling Options: Choose standard forced-air 19-inch rack enclosures (3U, 5U, 6U) or zero-emissions water-cooled platforms with anti-condensation management.
- Precision Range Switching: Three internal range switching levels ensure high resolution and measurement accuracy across light-load and full-scale operational limits.
- Automated Integration: Seamlessly controlled via GPIB (IEEE-488), RS232, and Ethernet (TCP/IP & HTTP) protocols, with 0-10V analog programming inputs.
- Closed-Box Calibration: Recalibrate systems without opening chassis seals, reducing maintenance downtime and preserving lab compliance records.
Engineering Specifications
Dynaload® Technical Performance Matrix
Review standard features across our high-power electronic load family designed to satisfy automated test equipment (ATE) standards.
| Parameter | Forced-Air Cooled Dynaload® | Liquid-Cooled Dynaload® |
|---|---|---|
| Power Range | 800W to 12kW single mainframe; scalable to 120kW | 6kW to 15kW per module; scalable to 120kW+ rack integration |
| Voltage Ratings | Up to 1000V DC | Up to 1000V DC |
| Operating Modes | Constant Current (CC), Constant Voltage (CV), Constant Power (CP/CW), Constant Resistance (CR), Pulse | Constant Current (CC), Constant Voltage (CV), Constant Power (CP/CW), Constant Resistance (CR), Pulse |
| Cooling Mechanism | Internal variable-speed forced airfans | Direct liquid heat-exchanger with anti-condensation feedback |
| Transient Response | High-speed edge rates with configurable slew rate | Sub-millisecond dynamic pulse generation |
| Control Interfaces | Ethernet, RS232, GPIB, 0-10V Analog | Ethernet, RS232, GPIB, 0-10V Analog |
| Form Factor | 19" Rackmount (3U / 5U / 6U) | Enclosed 19" Rackmount Liquid Subsystem |
Target Applications
Comprehensive Testing Scenarios & Industry Standards
From high-frequency power supply design to advanced electric vehicle (EV) battery validation, Dynaload® equipment delivers unmatched consistency.
Power Supply Qualification
Automated Power Conversion & Regulator Testing
Dynaload® systems simulate precise load profiles to measure voltage regulation, dynamic line/load transient response, efficiency curves, and current-limiting behavior under full-load or short-circuit conditions. Utilizing dynamic pulse modes, test engineers can capture voltage overshoot, undershoot, and control-loop recovery time on oscilloscopes with a single high-speed current pulse.
Energy Storage & Battery Validation
Battery Lifecycle, Capacity & Discharge Characterization
Accurate battery evaluation requires stable discharge characteristics and dynamic profile simulation. Operating in Constant Current (CC) mode freezes current draw to calculate precise amp-hour capacity ratings. For UPS battery backup and EV battery pack verification, Constant Power (CP) mode dynamically adjusts load current as terminal voltage decays, perfectly mirroring the real-world operating demands of downstream DC-DC converters and AC inverters.
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Fuel Cell & Hydrogen Storage
Fuel Cell Output Impedance & Dynamic Response Analysis
Evaluating fuel cell efficiency demands specialized load behavior. Dynaload® units support both current dump methods (transitioning from peak load to zero load in <10 microseconds) and sine wave modulation to determine internal cell impedance without compromising system safety. The rugged architecture prevents fly-back voltage damage from cable inductance during ultra-fast current transitions.
Engineering Trust & Reliability
Why Global R&D Facilities Depend on Astrodyne TDI
Astrodyne TDI builds test equipment engineered to outlast the products under test. Every Dynaload® unit is subjected to rigorous burn-in and functional validation in ISO 9001:2015 certified facilities prior to global dispatch.
With complete in-house control over topology design, thermal management, and firmware development, our engineering team provides direct technical consultation for international buyers, system integrators, and OEM testing facilities requiring custom load banks or specialized ATE rack configurations.
High Power Density
Occupies minimal rack space while delivering up to 120kW scaled output.
Liquid-Cooled Tech
Zero thermal discharge into host cleanrooms; ultra-quiet lab performance.
Precise Control
Sub-millisecond dynamic pulsing with fine voltage/current resolution.
Global Support
Full technical assistance, spare parts, and calibration guidance worldwide.
Frequently Asked Questions
Dynaload® Technical & Procurement FAQ
Expert engineering answers to common technical queries from test equipment buyers and system designers.
Astrodyne TDI Dynaload electronic loads support five primary operating modes: Constant Current (CC), Constant Voltage (CV), Constant Power (CP/CW), Constant Resistance (CR), and dynamic Pulse Mode. Pulse mode features user-adjustable frequency, duty cycle, baseline current level, and edge transition rate (slew rate).
Yes. Dynaload systems incorporate integrated Master/Slave parallel architecture. A single master controller can command up to 9 slave mainframes in parallel, creating a unified test system capable of dissipating up to 120kW of continuous power.
Liquid-cooled electronic loads deliver significantly higher power density in compact rack envelopes, eliminate acoustic fan noise, and prevent ambient heat and airflow turbulence in dust-sensitive cleanrooms and environmental test chambers. Advanced anti-condensation controls ensure internal temperatures remain safely above room dew points.
Dynaload hardware supports standard ATE communication channels, including Ethernet (TCP/IP and HTTP web interfaces), RS232, and GPIB (IEEE-488.2). Additionally, 0-10V isolated analog inputs are standard for driving complex real-time arbitrary waveforms from external DAQ instruments.
Closed-box calibration allows field technicians to adjust gain and offset parameters digitally via software or front-panel commands without breaking hardware seals or removing cover plates. This feature dramatically lowers recalibration costs and keeps unit downtime to a minimum.
Need Custom Load Configurations or Dynamic Testing Support?
Connect directly with our application engineering team to evaluate voltage profiles, thermal management budgets, and parallel system sizing for your test laboratory.