What it is

A family of fifteen 1U, 19-inch rack-mount programmable switching DC power supplies rated 1,200 to 1,560 W, with outputs from 6 V/200 A to 600 V/2.6 A.

The GW Instek PSU Series packs 1.5 kW into a 1U chassis. Its high power density design suits test system installation and integration. CC or CV priority, adjustable slew rate, and a full interface set come standard: USB, LAN, RS-232, RS-485, and analog control.

• Fifteen models: 6 V/200 A to 600 V/2.6 A, 1,200 … 1,560 W
• 1U height, 19-inch rack mount size: 16.65 × 1.72 × 17.61 in (423 × 43.6 × 447.2 mm)
• C.V/C.C priority mode: prevents inrush current and surge voltage at turn-on
• Adjustable voltage/current rise and fall time
• Series/parallel connection: max. 2 units in series (models under 300 V), 4 units of the same model in parallel
• Three sets of preset function, bleeder control, internal resistance, and panel lock
• Protection: OVP, OCP, OHP, UVL, AC fail, fan fail
• Interfaces: USB, LAN, RS-232, RS-485, and analog control standard; GPIB and isolated analog interface optional

What it is used for

Some of the use cases for the PSU Series include:

• Primary input of DC/DC converters
• Servomotor manufacturing equipment
• Aging test equipment — for capacitors and diodes
• Power supply for communications equipment
• Battery simulation — 12 V/24 V/48 V
• Component testing — electronic components, micro resistors, relays, and shunt resistors
• Automotive electronics — including ECUs for V8 or V12 engines
• 600 V DC bias applications and semiconductor production equipment

What does the PSU Series do?

GW Instek PSU-Series, a DC power supply with high power density design, is 1U in height and compatible with 19-inch rack mount size. The series is suitable for test system installation or system integration by flexibly selecting models for integration into the existing test system. The PSU-Series, featuring superior voltage and current control functions, comprises fifteen models with output voltage/current ranging from 6 V/200 A to 600 V/2.6 A. The series is suitable for different test conditions and DUTs, including electronic components testing, micro resistors, relays, shunt resistors, 12 V/24 V/48 V battery simulation, and automotive electronic device testing.

The PSU-HV series is ideal for the primary input of DC/DC converter and servomotor production applications. PSU is often integrated into component test systems such as aging test equipment for capacitors, 600 V DC bias applications, aging test equipment for diodes, semiconductor production equipment, automotive electronics, and ECUs for V8 or V12 engines.

Utilizing same-model units of the PSU-Series in series and parallel connections can increase total output power, total current, or total voltage. The wide voltage and current output ranges of the PSU-Series can fully satisfy various voltage and current measurement requirements. The PSU-Series is a single-output DC programmable power supply rated at 1,200 W to 1,560 W. It allows a maximum of 2 units in series (models under 300 V) to reach a maximum of 600 V, or 4 units in parallel to reach a maximum of 800 A and 6.24 kW.

More details, please follow PSU-Series Datasheet.

Which PSU model do I need?

Choose the model whose voltage covers your DUT with headroom, then check current. For more power, parallel up to 4 identical units; for more voltage, put 2 identical units in series (models under 300 V).

Key Capabilities

• Drop-In Keysight® SCPI Compatibility – Seamlessly replaces legacy Keysight power supplies with 100% code compatibility. Transition your automated test environments instantly with zero code rewrites.
• High Power Density (1U Footprint) – Packs up to 1.5 kW of clean power into a compact 1U chassis, optimizing valuable rack space compared to bulkier legacy alternatives.
• Versatile 15-Model Range – Choose from 15 distinct voltage and current combinations to precisely match your specific DUT requirements without overpaying for unused headroom.
• Precision Slew Rate & DUT Protection – Fully adjustable voltage and current rise/fall times to prevent damaging inrush currents on highly sensitive devices.
• CV / CC Priority Selection – Application-specific control behavior that eliminates voltage or current overshoots, critical for battery, LED, and semiconductor testing.
• Remote Sense & Battery Emulation – Automatically compensates for line-voltage drops while offering internal resistance emulation to simulate real-world battery performance.
• Streamlined Multi-Drop Control – Scale your system seamlessly. Control multiple units via LAN, USB, or GPIB without the added cost or complexity of external network switches.
• Rapid Preset Memory (x3) – Store and instantly recall up to three frequent test profiles for faster manual troubleshooting and verification.

Why engineers pick it

• Protects the DUT at turn-on. Conventional supplies in CV priority produce inrush current and surge voltage at turn-on. CC priority mode effectively restrains both, as shown when powering an LED at its forward voltage.
• Controlled ramps for capacitive loads and motors. Two slew rate settings are available: high-speed priority sets the maximum speed to reach CC or CV mode, and slew rate priority lets you set the rise and fall rate.
• More interfaces than a typical 1U supply. USB, LAN, RS-232, RS-485, and analog control are standard, with GPIB or an isolated analog interface as a factory option. Multi-drop mode removes the need for a switch, hub, or GPIB cable when adding slave units.
• Dense, stackable power. Four 1U units in parallel deliver up to 800 A and 6,240 W, and two in series reach 600 V.

Typical Applications

• DC/DC Converter Primary Input Testing
• Battery Simulation (12 V / 24 V / 48 V)
• Component Aging & Burn-In
• Semiconductor and Power Device Testing
• Automotive Electronics and ECU Validation
• Relay, Shunt, and Micro-Resistance Testing

What else does the PSU Series do?

• Trigger control: trigger input controls output, sets preset voltage and current, or loads preset memory; trigger output signals when output is set, a preset changes, or memory loads. Pulse width is settable from 0 to 60 ms, where 0 selects a DC level.
• External analog control: external voltage or resistance controls output voltage and current, and turns the output on or off, through the rear-panel analog control terminal.
• Bleeder control: a built-in bleed resistor discharges the output filter capacitors when power is turned off or the load is disconnected, and can be switched on or off.
• Output on/off delay: sets independent turn-on and turn-off delays, so multiple PSU units can be sequenced through the analog control terminal or by programming.
• Rack mounting: the rack mount kit supports both EIA and JIS standards.

When is the PSU Series the wrong choice?

• Series operation on high-voltage models. Series connection is limited to models under 300 V, with a maximum of 2 units.
• Hot environments with the filter kit. Operating temperature is 32 … 122 °F (0 … 50 °C), reduced to 104 °F (40 °C) when the front panel filter kit is installed.
• Bus bar paralleling above 60 V. The PSU-01B, PSU-02B, and PSU-03B parallel bus bars apply to models of 60 V or less; use the parallel connection cables for higher-voltage models.

Configure and order the PSU Series

Choose the PSU model, factory options, and accessories your system needs and order directly on this page. For questions, contact us.