UDP5000 DC Switching Power Supplies

The UDP5000 line is a 20-SKU high-power programmable DC switching supply family covering 400 W to 2 kW across four output voltage classes — 40 V, 80 V, 160 V, 250 V, and 800 V — with corresponding current capability up to 200 A per output. All twenty models share an 8-inch touch display, sequence/list mode programming, and SCPI remote control over LAN, USB, and optional GPIB. The 800 V UDP5800 tier serves electric-vehicle, energy-storage, and solar-inverter bench applications.

Resources

Documents

Data Sheets 1

UDP5000 Series DC Power Supplies - Data Sheet →

User Manuals 1

UDP5000 Series DC Power Supplies - User Manual →

Programming Manuals 1

UDP5000 programming manual →

Quick Start Guides 1

UDP5000 QSG →

UNI-T UDP5000 DC Power Supply — Buyer's Guide

Which UDP5000 Is Right for You?

The UDP5000 series is UNI-T's programmable switching DC power supply line, with 20 models spanning 40 V to 800 V output and 400 W to 2000 W. Every unit supports constant-voltage and constant-current operation, list sequencing, remote SCPI control, and multi-unit combining for higher voltage or current (the 800 V models combine in parallel only). The choice between models comes down to output voltage class first, then power level within that voltage class.

What Every UDP5000 Shares

Topology

Switching DC — high efficiency, lighter weight, programmable

Constant Power

Auto-ranging output — full rated power across a wide span of the V/I curve, not only at maximum voltage

List Mode

Up to 128 programmable steps for automated test profiles

Remote Control

LAN and USB 2.0 — full SCPI command set, with VXI-11, HiSLIP and an embedded WebServer

Combining

Series and parallel operation for higher V or I beyond a single chassis

Protections

OVP, OCP, FOCP, OPP, OTP — full protection suite standard

Display

2.4-inch color TFT display, web interface, USB datalogging

Warranty

3+2 years — parts and labor

Performance, protections, and programmability are identical across the line. You're choosing for your load.

Decision 1: Choose Your Voltage Class

Pick the lowest voltage class that exceeds your maximum load voltage with reasonable headroom (typically 10–20%). Higher voltage classes trade max current at a given power rating.

40 V

Best for: Low-voltage battery (1S–10S Li-ion), 3.3 V/5 V/12 V/24 V/36 V digital systems, automotive 12 V/24 V bus testing

80 V

Best for: 48 V telecom, e-bike packs (10S–20S), light EV traction, two-wheeler battery test

160 V

Best for: Solar microinverter, 96 V industrial, 120 V mains-derived DC, mid-voltage battery test

250 V

Best for: 200 V industrial, single-phase mains DC, PV string-level test, light EV battery packs

800 V

Best for: EV traction battery (400–800 V architectures), high-voltage PV strings, industrial DC bus, fuel cell test

Decision 2: Choose Your Power Level

Within each voltage class, four power levels — 400 W, 800 W, 1200 W, and 2000 W — cover everything from low-current cell-level testing through 200 A automotive battery validation. Auto-ranging output means a unit holds its full rated wattage from the point where its current limit is reached all the way up to its rated voltage, rather than only at a single V/I point.

Power Level	Typical Use
400 W	R&D bench, cell-level battery test, embedded systems, prototyping
800 W	Module-level battery test, light power-electronics validation, ATE
1200 W	Pack-level battery test, mid-power converter validation, production test
2000 W	EV pack test, high-current motor drive, industrial production test

Tip: Need more than a single chassis delivers? Parallel mode combines same-model units to sum output current. Series mode combines up to two same-model units to double the voltage ceiling — available on the 40 V through 250 V classes; the 800 V models are parallel-only.

Complete Model Matrix

Find your voltage class (column) and power level (row) to identify the right model. Click any model to view full specifications.

Power	40 V	80 V	160 V	250 V	800 V
400 W	UDP5040-40 40 V / 40 A	UDP5080-20 80 V / 20 A	UDP5160-8 160 V / 8 A	UDP5250-6 250 V / 6 A	UDP5800-2 800 V / 2 A
800 W	UDP5040-80 40 V / 80 A	UDP5080-40 80 V / 40 A	UDP5160-16 160 V / 16 A	UDP5250-12 250 V / 12 A	UDP5800-4 800 V / 4 A
1200 W	UDP5040-120 40 V / 120 A	UDP5080-60 80 V / 60 A	UDP5160-24 160 V / 24 A	UDP5250-18 250 V / 18 A	UDP5800-6 800 V / 6 A
2000 W	UDP5040-200 40 V / 200 A	UDP5080-100 80 V / 100 A	UDP5160-40 160 V / 40 A	UDP5250-30 250 V / 30 A	UDP5800-10 800 V / 10 A

Recommended Configurations

Li-ion Cell / Small Pack Test

UDP5040-40 or UDP5040-80

40 V covers 1S–10S Li-ion (up to ~42 V fully charged). 40 A or 80 A handles cell-level cycling and small pack characterization. List mode runs CC/CV charge profiles automatically.

48 V Battery / Telecom DC

UDP5080-40 or UDP5080-60

80 V class with 40–60 A handles 48 V telecom rectifier replacement, e-bike packs, and 48 V automotive accessory testing. Programmable load profiles for endurance testing.

EV Traction Battery Test

UDP5800-6 or UDP5800-10

800 V class covers both 400 V and 800 V EV architectures. The UDP5800-10 delivers 2000 W of programmable output at up to 800 V and up to 10 A for full-pack validation. Parallel multiple units for higher current; ideal for HV pack ATE.

PV String / Solar Inverter Test

UDP5160-24 or UDP5250-18

Mid-voltage PV string emulation. List mode simulates irradiance profiles (MPPT testing). 160 V or 250 V class covers residential and light-commercial PV inverter inputs.

Motor Drive / Inverter Validation

UDP5250-30 or UDP5160-40

2000 W class with 30–40 A drives motor controller and inverter DC bus testing. Stable voltage at high current; parallel for higher motor power.

R&D Bench / Prototyping

UDP5040-40 or UDP5080-20

400 W class — compact bench footprint, full programmability, generous V/I envelope for most digital and embedded prototyping work.

Automotive 12 V/24 V Bus Test

UDP5040-120 or UDP5040-200

40 V with 120 A or 200 A — generous headroom for 12 V automotive bus testing, cold-crank profiles, load-dump simulation, BMS validation.

Industrial 200–250 V DC Bus

UDP5250-12 or UDP5250-18

250 V class for industrial DC bus emulation, single-phase mains-derived loads, capacitor formation, and motor field windings.

Why Choose UDP5000?

Auto-Ranging Output

Full rated power across a wide span of the V/I curve, not just at a single voltage. A 250 V / 30 A, 2000 W unit delivers its full 2000 W from roughly 67 V all the way up to 250 V — useful range, not a marketing peak.

20-Model Matrix

5 voltage classes × 4 power levels gives 20 combinations — find a unit that fits your load without overbuying voltage or power you won't use.

Series and Parallel Combining

Combine same-model units in parallel to sum current, or in series to double the voltage ceiling. Series operation supports up to two units and is available on the 40 V through 250 V classes.

3+2 Warranty

Three years of standard coverage plus two additional years with product registration — five years total, parts and labor.

FAQ

What does "auto-ranging" or "constant power" mean?

A traditional power supply is rated at one voltage and one current, and below that voltage the current ceiling becomes the limit on power. An auto-ranging supply like the UDP5000 holds its full rated wattage from the point where its current limit is reached up to its rated voltage. A 400 W / 40 V / 40 A unit delivers 400 W at 40 V × 10 A, at 20 V × 20 A, and at 10 V × 40 A — below 10 V the 40 A limit caps the available power.

Can I combine multiple UDP5000 units?

Yes. Same-model units combine in parallel to sum output current, and in series to raise the voltage ceiling. Series operation supports up to two units — so a pair of 250 V models reaches 500 V — and is not available on the 800 V models, which are parallel-only. One master unit controls the group over a CAN interconnect, and output balance between master and slave units is held within approximately 5% of rated value. Contact us for the maximum parallel group size in your voltage and power class.

What's the difference between switching and linear DC supplies?

Switching supplies (like UDP5000) are smaller, lighter, more efficient, and more programmable — ideal for production test, ATE, and any application where you need significant power per rack U. Linear supplies have lower output noise and faster transient response — better for low-noise analog work and very fast load steps. UDP5000 is switching.

Suitable for automated test systems?

Yes. Full SCPI command set over LAN and USB 2.0, with VXI-11, HiSLIP, and an embedded WebServer that runs in a browser without additional drivers. List mode supports up to 128 programmable steps, set from the front panel or imported over USB, with step times from 0.1 s to 99,999.9 s and cycle counts from 1 to 9,999 or infinite.

How is constant current handled?

UDP5000 supports both CV (constant voltage) and CC (constant current) operation with automatic crossover. List mode programs both modes with arbitrary timing for battery cycling and electronic-load-like profiles.

What warranty comes with the UDP5000?

Three years of standard coverage, parts and labor, plus two additional years with product registration — five years total.

Twenty models, one architecture — choose the UDP5000 that fits your voltage class and your load.

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