Siglent SPS5081X 80V/15A/360W 1CH switch mode power supply
The Siglent SPS5081X is a single channel programmable Switching DC Power supply that provides a 0-80V 0-15A range with a max output power of 360W. The SPS5000X series is a ideal choice for a variety of demanding markets, including Commercial Industrial, Education, Energy and Power Generation, laboratory general testing, the LED lighting industry, and automotive electronics.
SPS5081X — single-channel 360 W programmable DC supply
The SPS5081X delivers 360 W across a wide-range output of 0–80 V and 0–15 A. Because it is a constant-power design, the full wattage is available across a broad voltage and current envelope — not just at one operating point — so a single unit covers work that would otherwise need two supplies.
It behaves like a test instrument rather than a bench brick: 1 mV / 1 mA resolution, CV/CC priority with adjustable slew rates, programmable output resistance to emulate a real source, an internal discharge circuit, 50-step list sequences, and full remote control over USB, LAN (with a built-in web server) or the analog control interface.
Why a wide-range supply
The capabilities that make the SPS5081X behave like a programmable source, not a fixed rail.
Wide-range constant power
This is what separates the SPS5000X from an ordinary supply. Instead of full power at a single voltage/current point, the output follows a constant-power envelope (ratio 3.33) — so the same unit delivers 80 V at reduced current or the full 15 A at reduced voltage. One instrument covers applications that would otherwise need two, and you buy watts rather than a fixed rail.
CV / CC priority and slew control
Choose whether the supply comes up in constant-voltage or constant-current priority, and set how fast — voltage 0.1–80 V/s, current 0.01 – 30 A/s. A sensitive DUT can be eased up gently to avoid inrush and overshoot; a stress test can snap the rail up. Load transient recovery is < 1 ms, so the rail holds when the load steps.
List mode — sequences without a PC
Up to 50 steps of voltage, current and dwell time, edited on the panel or imported from a USB stick. Crank profiles, brown-outs, staged start-up and endurance cycling all run standalone.
Programmable output resistance
Set an internal resistance (0 – 6 Ω) so the supply behaves like a real source — a battery with internal impedance, or a long cable run. The DUT sees realistic droop instead of an ideal stiff rail.
Internal discharge circuit
Switch on the discharge circuit and the output falls quickly when you program it down, instead of waiting for a light load to drain the capacitance. It makes stepping profiles and test cycles far faster.
External analog programming
Control voltage or current from an external 0–5 V signal or a resistance, and read the output back through the monitor outputs — the interface that lets the supply become part of a larger analog control loop.
Web server & remote control
LAN with an embedded web server means a browser is all you need — no driver, no software install. USB and full SCPI cover scripted control, with a USB-GPIB adapter available for legacy racks.
Rear panel — sense, analog & LAN
Remote sense terminals compensate up to 0.6 V per wire so the voltage lands where your load is. Alongside: the analog control connector, monitor outputs, LAN, USB and the output terminals.
Key features
- 0–80 V / 0–15 A single output — 360 W total
- Wide-range constant power (ratio 3.33) — high voltage or high current from the same supply, so one unit covers jobs that would need two
- 1 mV / 1 mA setting and readback resolution on a 2.4″ high-brightness OLED
- CV / CC priority selection with adjustable voltage and current slew rates — bring a rail up gently or snap it up fast
- Load transient recovery < 1 ms · ripple 60 mVp-p / 9 mVrms
- Programmable output resistance (0 – 6 Ω) to emulate a real source such as a battery
- Internal discharge circuit pulls the output down fast instead of waiting for the load to drain it
- List mode up to 50 steps · external analog V/R programming · V/I monitor outputs
- OVP, OCP, LPP and OTP protection with remote voltage sense
- USB, LAN with embedded web server and analog control standard — USB-GPIB optional
Application examples
One supply instead of two
Constant-power operation means the full 360 W is available across a wide envelope — 80 V at low current for a high-voltage rail, or the full 15 A at low voltage for a heavy load. A conventional supply gives you full power at only one point.
Battery packs, EV and solar work
80 V covers multi-cell packs, DC-link rails and PV string simulation. Programmable output resistance emulates a real source’s internal impedance, so the DUT sees a supply that behaves like the battery it will ship with.
LED lighting and precision loads
Fine 1 mA setting resolution with tight readback makes it suitable for LED strings and other loads where a small current change matters.
Automated test racks
LAN with an embedded web server, USB and a full analog control interface — drive it from SCPI, a browser, or an external 0–5 V signal from the rest of your rig. The 1/6 rack width chassis racks up neatly with the SPS5000X-RMK.
Long soak and endurance runs
List sequences of up to 50 steps run standalone, protections (OVP/OCP/LPP/OTP) guard the DUT overnight, and the discharge circuit brings the output down quickly between steps.
Need more than one unit can give?
SPS5000X supplies combine — up to 320 V in series, 270 A in parallel and 3240 W together.
Series — two units, up to 320 V
Stack two supplies with the SPS5000X-SEC cable set and the pair behaves as one higher-voltage source. Useful when a DC-link, string or insulation test needs more headroom than a single unit provides.
Parallel — three units, up to 270 A
Connect up to three units with the SPS5000X-PAC cable set for a single high-current output, sharing the load automatically. Combined output reaches 3240 W without changing your test setup.
Every angle
The SPS5081X up close, and how the series stacks.
Specifications
| Output | Single channel — 0 – 80 V / 0 – 15 A |
| Total rated output power | 360 W |
| Wide-range (constant power) | Power ratio 3.33 — full rated power is available across a wide voltage/current envelope, not just at one operating point |
| Setting / readback resolution | 1 mV / 1 mA |
| Voltage accuracy | Setting 0.1% ± 10 mV · readback 0.1% ± 20 mV |
| Current accuracy | Setting 0.1% ± 15 mA |
| Ripple & noise (C.V.) | 60 mVp-p / 9 mVrms (20 MHz noise BW / 1 MHz ripple BW) |
| Load transient recovery | < 1 ms for a 50–100% load change |
| Slew rate | Voltage 0.1 – 80 V/s · current 0.01 – 30 A/s (CV / CC slew priority) |
| Output resistance setting | 0 – 6 Ω |
| Protection | OVP 8 – 88 V · OCP 1.5 – 15 A · LPP (≈105% of rated power) · OTP · low-AC-input shutdown |
| Remote sense | Yes — up to 0.6 V compensation per wire |
| List mode | Up to 50 steps, editable on the front panel or imported from a USB stick |
| Analog control | External voltage or resistance programming of V/I · external V/I monitoring outputs · CV/CC/ERR/ON-OFF status |
| Display | 2.4″ high-brightness OLED, 170° viewing angle |
| Connectivity | USB (Type A host + Type B device) · LAN with embedded web server · analog control interface · USB-GPIB optional |
| Combining units | Series 2 units (to 320 V) · parallel 3 units (to 270 A) · up to 3240 W combined |
| AC input | 100 – 240 Vac (90 – 265 V), 47 – 63 Hz single phase · 5 A @ 100 Vac / 2.5 A @ 200 Vac · max 500 VA |
| Efficiency | > 77% at 100 Vac · > 79% at 200 Vac |
| Dimensions & weight | 71 × 124 × 418 mm (⅙ rack width) · 3.3 kg |
From the official SPS5000X series datasheet; subject to change, errors & omissions excepted.
In the box
Everything included as standard with your SPS5081X.
Series and parallel operation require the SPS5000X-SEC / SPS5000X-PAC cable sets below.
Accessories & related models
Cables for combining units, the rack kit, and the nearest models in the series.
19″ rack kit for the ½, ⅓ and ⅙ width chassis — mount one, two or more units in a single 3U shelf.
Parallel connection cable set — required to run up to three units as one high-current supply.
Series connection cable set — required to stack two units for up to 320 V.
Not sure which SPS5000X you need?
Tell us the voltage, current and power your application needs — and whether you want one channel or three — and we will point you at the right model, with EU stock and support.
Downloads
These documents cover the whole SPS5000X series, including the SPS5081X.