{"product_id":"udp6721","title":"UDP6721 180W 60V\/8A Programmable DC Switching Power Supply","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cdiv class=\"product-row\"\u003e\n\u003cdiv class=\"product-box product-left\"\u003e\n\u003cp\u003eThe UDP6721 is a 180 W programmable DC switching power supply with a 60 V × 8 A wide-range output, RS-232 with full SCPI control, 600-group memory, list mode, and OVP\/OCP\/OTP protection.\u003c\/p\u003e\n\u003cp\u003eStep-up current within the 60V class. Same chassis as UDP6720 but 8A instead of 5A — useful when a 24V or 48V load wants more current than 100W can deliver.\u003c\/p\u003e\n\u003cp\u003eIt's built for a workbench that runs the same supply across product design, board debug, and deployed test fixtures — affordability where the spec sheet doesn't punish it, precision where the load demands it, and an interface direct enough that the next person sitting down doesn't need a manual.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-box product-right\"\u003e\n\u003cimg src=\"https:\/\/res.cloudinary.com\/uni-t\/image\/upload\/v1722808088\/UDP6721_1.jpg\" alt=\"UDP6721 programmable DC power supply, front view\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eAcross the Design. Debug. Deploy.™ Lifecycle\u003c\/h2\u003e\n\u003cp\u003eThe UDP6700 series fits the workflow we call \u003cstrong\u003eDesign. Debug. Deploy.\u003c\/strong\u003e — the three-act cycle most engineering teams actually run a power supply through. In \u003cstrong\u003eDesign\u003c\/strong\u003e, list mode and 600 memory groups let a planned voltage profile execute repeatably while the rest of the bench attends to capture and analysis. In \u003cstrong\u003eDebug\u003c\/strong\u003e, OVP\/OCP\/OTP protections, remote sense compensation, and a 4-digit dual LED display make it safe to push a marginal load and see exactly what's happening at the terminals. In \u003cstrong\u003eDeploy\u003c\/strong\u003e, RS-232 with full SCPI command coverage means the same supply that ran on the design bench can drop into a production rack and be controlled by the same scripts. One instrument, three phases, no relearning.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e180 W rated power, 60 V × 8 A wide envelope\u003c\/strong\u003e — Up to 60 V at 3 A or 22.5 V at 8 A — same 180 W envelope, no second instrument\u003c\/li\u003e\n\u003cli\u003eWide-range output with power ratio 3.0 — one supply covers V\/I combinations that would otherwise require two\u003c\/li\u003e\n\u003cli\u003eProgrammable list mode: 9 steps per list, 1 ms to 9999 s per step, repeat 1–9999 cycles\u003c\/li\u003e\n\u003cli\u003eTrigger delayer: 9 trigger groups, 1 ms to 9999 s per trigger\u003c\/li\u003e\n\u003cli\u003e600 memory groups (M1: 100 \/ M2: 100 \/ M3: 400) for stored output configurations\u003c\/li\u003e\n\u003cli\u003eOver-voltage, over-current, and over-temperature protection with set ranges 0–110% of rated\u003c\/li\u003e\n\u003cli\u003eRemote sense compensation for accurate output at the load terminals over long leads\u003c\/li\u003e\n\u003cli\u003eRS-232 with full SCPI command coverage; a software-only PC controller is included\u003c\/li\u003e\n\u003cli\u003eSmart fan: load- and temperature-controlled for low audible noise at light load\u003c\/li\u003e\n\u003cli\u003e4-digit dual LED display with simultaneous V and I readout\u003c\/li\u003e\n\u003cli\u003eOVP\/OCP thresholds set with a long-press on the V or I key — no menu dive\u003c\/li\u003e\n\u003cli\u003eKnob and direct numeric entry on the front panel; both work the same way\u003c\/li\u003e\n\u003cli\u003eSoftware calibration retains traceability without an internal trim-pot pass\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\u003ch2\u003eWide-Range Output (Power Ratio 3.0)\u003c\/h2\u003e\n\u003cdiv class=\"product-row\"\u003e\n\u003cdiv class=\"product-box product-left\"\u003e\n\u003cp\u003ePower ratio 3.0 means the rated output envelope can be redistributed between voltage and current as the load demands. Where a fixed-rectangle supply would force a tradeoff — buy enough volts \u003cem\u003eor\u003c\/em\u003e enough amps — the UDP6700 lets you trade one for the other along a constant-power curve. Most general-purpose bench work sits inside that envelope, so one supply does the work of two.\u003c\/p\u003e\n\u003cp\u003eThe exact V × I corners depend on rated power; the spec table below shows the maximum voltage at rated current and the maximum current at rated voltage for this SKU.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-box product-right\"\u003e\n\u003cimg src=\"https:\/\/res.cloudinary.com\/uni-t\/image\/upload\/v1726083027\/UDP6700_Screen.jpg\" alt=\"UDP6700 series 4-digit dual LED display showing simultaneous voltage and current readout\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eRemote Sense Compensation\u003c\/h2\u003e\n\u003cdiv class=\"product-row\"\u003e\n\u003cdiv class=\"product-box product-left\"\u003e\n\u003cimg src=\"https:\/\/res.cloudinary.com\/uni-t\/image\/upload\/v1726083028\/UDP6700_Remote_Compensation.jpg\" alt=\"UDP6700 remote sense terminals on rear panel\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-box product-right\"\u003e\n\u003cp\u003eLong leads drop volts. At 5 A through 1 m of 18-AWG wire, the lead drop is around 100 mV — enough to sour a 3.3 V regulator test or starve a battery cycler. Remote sense routes the regulation feedback past the leads to the load terminals themselves, holding the programmed voltage where it actually matters.\u003c\/p\u003e\n\u003cp\u003eThe remote sense terminals are wired separately from the output terminals on the rear panel; the supply auto-detects sense connection and falls back to local sensing if the wires are removed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eOVP \/ OCP \/ OTP Protection\u003c\/h2\u003e\n\u003cdiv class=\"product-row\"\u003e\n\u003cdiv class=\"product-box product-left\"\u003e\n\u003cp\u003eThree independent protections cover the most common ways a load fails: a short or low-impedance fault drives current up (OCP), a misconfigured DUT pulls voltage out of spec (OVP), or a sustained over-load heats the supply itself (OTP). All three trip the output off and display a fault state on the front panel.\u003c\/p\u003e\n\u003cp\u003eOVP and OCP thresholds are set with a long-press on the V or I key — set the threshold once, run the load. No menu dive, no nested submenu. OTP is internal and not user-configurable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-box product-right\"\u003e\n\u003cimg src=\"https:\/\/res.cloudinary.com\/uni-t\/image\/upload\/v1726083030\/UDP6700_OCP.jpg\" alt=\"UDP6700 over-current protection display\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eList Mode and Trigger Delayer\u003c\/h2\u003e\n\u003cdiv class=\"product-row\"\u003e\n\u003cdiv class=\"product-box product-left\"\u003e\n\u003cimg src=\"https:\/\/res.cloudinary.com\/uni-t\/image\/upload\/v1726083028\/UDP6700_List.jpg\" alt=\"UDP6700 list mode programming interface\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-box product-right\"\u003e\n\u003cp\u003e\u003cstrong\u003eList mode\u003c\/strong\u003e runs a 9-step voltage and current sequence with each step held from 1 ms to 9999 s and the whole list repeated 1 to 9999 cycles. Useful for battery cycling, automotive cold-crank profiles, and any scripted sequence that needs to run unattended.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTrigger delayer\u003c\/strong\u003e fires 9 trigger groups with delays between 1 ms and 9999 s. Useful when an output transition needs to wait for an external event — DUT settling, fixture motion, an oven step — before moving to the next setting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003e600 Memory Groups (M1 \/ M2 \/ M3)\u003c\/h2\u003e\n\u003cdiv class=\"product-row\"\u003e\n\u003cdiv class=\"product-box product-left\"\u003e\n\u003cp\u003eThree memory banks store 100, 100, and 400 output configurations. M1 and M2 are typically used for active recipes (the configuration in the front-panel knob workflow); M3 holds 400 long-term recall configurations for products and DUTs the bench works on regularly.\u003c\/p\u003e\n\u003cp\u003eEach memory entry stores voltage setting, current setting, OVP and OCP thresholds, and the slope\/list state. Recall is a single front-panel keypress.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-box product-right\"\u003e\n\u003cimg src=\"https:\/\/res.cloudinary.com\/uni-t\/image\/upload\/v1726083029\/UDP6700_Memory.jpg\" alt=\"UDP6700 memory recall interface showing stored configurations\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eRS-232 with Full SCPI Command Coverage\u003c\/h2\u003e\n\u003cdiv class=\"product-row\"\u003e\n\u003cdiv class=\"product-box product-left\"\u003e\n\u003cimg src=\"https:\/\/res.cloudinary.com\/uni-t\/image\/upload\/v1726083028\/UDP6700_Delayer.jpg\" alt=\"UDP6700 software interface showing remote SCPI control\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-box product-right\"\u003e\n\u003cp\u003eRS-232 with full SCPI command set. Voltage and current setpoint, OVP\/OCP threshold, list configuration, memory recall, output enable, and readback all accessible from a host script. The included Windows PC software exposes the same commands through a GUI for users who don't want to write code.\u003c\/p\u003e\n\u003cp\u003eRS-232 is honest about what it is: one supply per host port, no LAN, no USBTMC. For multi-instrument benches with more than one programmable supply or for remote\/automated environments, the \u003cstrong\u003eUDP6900B series\u003c\/strong\u003e adds USB, LAN with web control, RS-485 with Modbus, and multi-machine daisy-chain.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eThermal Derating\u003c\/h2\u003e\n\u003cdiv class=\"product-row\"\u003e\n\u003cdiv class=\"product-box product-left\"\u003e\n\u003cp\u003eThe UDP6721 delivers full 180 W rated output at ambient temperatures up to about 30 °C. Above that, output power derates linearly to maintain internal junction temperatures inside the safe envelope. The derating curve below shows the exact relationship between ambient temperature and rated power for this SKU. Operating temperature range is 0–40 °C.\u003c\/p\u003e\n\u003cp\u003eThe smart fan adjusts speed automatically based on load and internal temperature; light-load operation is quiet, and the supply only ramps fan speed when thermal headroom requires it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-box product-right\"\u003e\n\u003cimg src=\"https:\/\/res.cloudinary.com\/uni-t\/image\/upload\/v1726083030\/UDP6721_Derate_Curve.jpg\" alt=\"UDP6721 thermal derating curve, output power vs ambient temperature\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003ch3\u003eIndustrial Maintenance Bench (Higher Current)\u003c\/h3\u003e\n\u003cp\u003eFor benches where the loads run heavier than 5 A — 24 V solenoids and contactors that draw 6–7 A inrush, 12 V automotive subsystems that need real margin, multi-channel LED arrays. Same 60 V ceiling as UDP6720 but 8 A continuous instead of 5 A.\u003c\/p\u003e\n\u003ch3\u003eBattery and Charger Bench\u003c\/h3\u003e\n\u003cp\u003e180 W is enough to charge most single-cell and 4S Li-ion packs at a meaningful rate, run small Pb-acid cycles, and source enough current for fixture-driven battery work without requiring a UDP6730. List mode runs a charge profile; OCP and OVP enforce safe envelopes.\u003c\/p\u003e\n\u003ch3\u003eEmbedded R\u0026amp;D, High-Inrush Loads\u003c\/h3\u003e\n\u003cp\u003eFor boards where the prototype draws more than 5 A on power-up — switching front-ends, motor drivers, multi-DUT fixtures. UDP6721's 8 A capability prevents an inrush event from tripping current limit and aborting the bring-up.\u003c\/p\u003e\n\u003ch3\u003eProduction Test Station\u003c\/h3\u003e\n\u003cp\u003eDrop-in replacement for UDP6720 on lines that have outgrown the 5 A envelope. Same UI, same SCPI command set, same memory model — only the rating changes.\u003c\/p\u003e\n\u003ch2\u003eAccessories \u0026amp; In the Box\u003c\/h2\u003e\n\u003cp\u003eEvery UDP6700 ships with a power cord, a quick-start guide, the Windows PC software (download), an RS-232 cable, and a calibration certificate. Test leads with alligator clips are an optional accessory and not included in the base configuration.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePower cord (region-specific)\u003c\/li\u003e\n\u003cli\u003eRS-232 communication cable\u003c\/li\u003e\n\u003cli\u003eQuick-start guide\u003c\/li\u003e\n\u003cli\u003ePC software (download via uni-trendus.com)\u003c\/li\u003e\n\u003cli\u003eFactory calibration certificate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eOptional accessory:\u003c\/em\u003e Alligator-clip test lead set (sold separately).\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eUDP6721 vs UDP6720 — when does the upgrade pay?\u003c\/h3\u003e\n\u003cp\u003eSame chassis, same UI, same 60 V ceiling. UDP6721 trades a small ripple\/regulation increase (≤0.02% + 5 mA load regulation vs ≤0.01% + 3 mA on UDP6720) for nearly double the current rating (8 A vs 5 A) and 80% more rated power (180 W vs 100 W). The upgrade pays whenever the bench load draws more than 5 A continuous, has inrush above 5 A, or needs more headroom at 24 V or 48 V.\u003c\/p\u003e\n\u003ch3\u003eWhere does this fit relative to the UDP6900B series?\u003c\/h3\u003e\n\u003cp\u003eThe UDP6900B series is the next step up. Same form factor, same wide-range output philosophy, but adds USB and LAN with web control, RS-485 with Modbus, multi-machine daisy-chain, slope-mode output, auto-range mode, and a built-in DVM. If a single supply on a single host port satisfies the bench, the UDP6700 is the right choice; if the bench has multiple programmable supplies, needs LAN access, or runs scripted multi-instrument tests, UDP6900B is the right step up.\u003c\/p\u003e\n\u003ch3\u003eWhere does this fit relative to the UDP3000C series?\u003c\/h3\u003e\n\u003cp\u003eThe UDP3000C series is multi-channel linear, not single-channel switching. If the bench needs two or three independent isolated outputs in one chassis (rail + bias + reference, for example), UDP3000C is the right tool. UDP6700 is the right tool when a single high-power output beats three medium-power outputs.\u003c\/p\u003e\n\u003ch3\u003eWhat's in the box?\u003c\/h3\u003e\n\u003cp\u003ePower cord, RS-232 cable, quick-start guide, factory calibration certificate. Windows PC software is a free download from uni-trendus.com. Test leads with alligator clips are an optional accessory and not included in the base configuration.\u003c\/p\u003e\n\u003ch3\u003eIs the chassis 1U rack-mountable?\u003c\/h3\u003e\n\u003cp\u003eNo. The chassis is 174 mm tall (about 6.85 inches), which is a desktop form factor — not 1U (44.45 mm). It will fit on a shelf in a standard 19-inch rack but will not mount in a 1U slot. UNI-T does not currently offer a rack-mount kit for the UDP6700 series.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePart of the UDP6700 programmable DC switching power supply series. See also \u003ca href=\"\/products\/udp6721-180w-basic-dc-switching-power-supply-60v-8a\"\u003eUDP6721\u003c\/a\u003e, \u003ca href=\"\/products\/udp6730-360w-basic-dc-switching-power-supply-40v-30a\"\u003eUDP6730\u003c\/a\u003e, \u003ca href=\"\/products\/udp6731-360w-basic-dc-switching-power-supply-80v-15a\"\u003eUDP6731\u003c\/a\u003e.\u003c\/em\u003e\u003c\/p\u003e","brand":"UNI-T","offers":[{"title":"Default Title","offer_id":49591084515612,"sku":"181400100064X","price":329.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/9208\/0924\/files\/UDP6721_1_sq_0035f9db-ef3e-4399-9a7f-c94b05c0a3ef.jpg?v=1742401637","url":"https:\/\/uni-trendus.com\/products\/udp6721","provider":"Uni-Trend US","version":"1.0","type":"link"}