ATE System Power Supplies Buying Guide

ATE System Power Supplies Buying Guide

Buying Guides

Selecting the right ATE system power supply depends on the performance, control, and scalability your automated test application requires. Keysight offers three performance grades—Advanced, Expert, and Pro—each designed to support power‑dense, automation‑ready test environments from high‑volume production to complex automotive, aerospace, and renewable energy systems. This buying guide compares these grades to help you determine which model aligns with your test rack power, accuracy, and responsiveness needs.
 

Keysight’s ATE system power supplies lineup is structured into three main performance grades with varying core features:

  • Advanced ATE system power supplies come in one class. The NS1‑class Advanced ATE power supplies include the N5700 Series, N8700 Series, and N8900 Series. These compact 1U–3U supplies deliver up to 15 kW of output power with fast command response, high power density, and broad voltage/current ranges. Ideal for general‑purpose automated test environments, they support device protection, autoranging operation, and remote control via GPIB, LAN, and USB interfaces.

  • Expert ATE system power supplies come in two classes. The NS1‑class includes the DP5700 Series and N6900 Series, and the NS4‑class includes the RP5900 Series. Expert models provide up to 12 kW of output power, dynamic sequencing, fast command processing, and enhanced precision for high‑speed, complex production tests. Their architecture supports rapid load changes, built‑in digital I/O, series/parallel operation, and optional regenerative capability for energy recovery.

  • Pro ATE system power supplies come in two classes. The NS1‑class includes the N7900 Series, and the NS4‑class includes the RP7900 Series. Designed for the most demanding applications, Pro models support up to 30 kW of bidirectional, regenerative power with sub‑millisecond transient response. Their high‑speed digitization (up to 1.6 MSa/s), built‑in arbitrary waveform generation, and superior autoranging capability make them ideal for high‑power EV testing, aerospace systems, renewable‑energy validation, and next‑generation powertrain development.
     

Typical use cases further illustrate how each ATE system power supply grade supports different engineering needs:

  • Advanced ATE system power supplies support a wide range of general‑purpose test and validation needs, including power‑device characterization, industrial inverter testing, motor‑drive evaluation, and solar inverter validation. Their fast command execution, high density, and broad voltage/current ranges make them suitable for both development labs and high‑volume production lines.

  • Expert ATE system power supplies extend capability with faster dynamic response, precision output control, and enhanced programmability. They are ideal for high‑speed load testing of motor controllers, power inverters, automotive ECUs, and telecommunications equipment. Engineers rely on Expert models for their fast transient reaction, sequencing capability, and robust synchronization features for complex test setups.

  • Pro ATE system power supplies support the most power‑intensive and dynamic applications. With regenerative energy capability and high‑power autoranging, Pro models excel in EV powertrain testing, aerospace electronics validation, bidirectional converter development, and renewable‑energy systems. Their ultra‑fast response times and real‑time control enable accurate emulation of transient load behavior and high‑speed power cycling.
     

Before finalizing an ATE system power supply purchase, it’s important to consider key selection factors:

  • Output power: This defines the total wattage the system can deliver across outputs. Choose Advanced for applications up to 15 kW, Expert for high‑precision systems up to 12 kW, and Pro for high‑power, high‑accuracy use cases up to 30 kW.

  • Voltage range: This determines the operating envelope your DUT requires. Choose Advanced for moderate‑to‑high voltage needs, Expert for lower‑voltage applications requiring fast response and precision, and Pro for the highest‑voltage, lowest‑noise applications or regenerative high‑power testing.

  • Current range: This determines peak and continuous current capability. Choose Advanced for high‑current, scalable setups; Expert for moderate‑current applications needing enhanced speed; and Pro for maximum current with ultra‑fast transient response and regeneration.

  • Noise and ripple: This impacts measurement accuracy and DUT sensitivity. Choose Advanced for stable, non‑sensitive applications and Expert or Pro for RF, analog, or precision power tests requiring noise levels as low as 3.7 mVpp.

  • Programming and response time: This influences how quickly the output can change or settle. Choose Advanced for slower transitions where throughput matters more than timing precision, Expert for faster programming and moderate transients, and Pro for real‑time responsiveness needed in high‑speed dynamic tests.

  • Regenerative power: This determines whether the system can return energy to the grid. Advanced does not support regeneration; Expert varies by model; Pro offers full regenerative capability for energy‑storing or bidirectional DUTs such as EV converters and renewable‑energy systems.
     

Software enhances the capability of ATE system power supplies with tools for remote control, automated sequencing, data logging, and system‑level integration. Application software supports power‑profiling workflows, fast dynamic testing, PV inverter characterization, battery emulation control, and advanced automation for high‑throughput validation and production lines. Accessories such as high‑current cabling, rack‑mount kits, bus bars, adapters, and digital I/O expanders ensure accurate connections, safe operation, and seamless integration into complex automated test environments.
 

Keysight Support Services can reduce your learning curve, enhance your uptime, ensure the accuracy of your testing equipment, and provide the expertise you require, precisely when and where you need it. KeysightCare curated support plans bundle critical services with prioritized response and turnaround times, and high‑performance ATE systems include one year of KeysightCare Assured to maintain confidence in ongoing high‑demand production test performance