The UDP3305C is the higher-current sibling of the UDP3303C], and features the same three-channel SCPI-programmable linear platform, with CH1 and CH2 raised to 0–30V at 0–5A for benches that need 5A on a rail without giving up clean linear output.
Total output is 315W; CH3 cycles through 1.8V / 2.5V / 3.3V / 5V at 3.2A for digital subsystem powering. Linear regulation keeps output ripple under 1 mVrms.
CH1 and CH2 combine in series for up to 60V or in parallel for up to 10A — useful when the workload occasionally exceeds what a single 5A rail can deliver. SCPI over USB-Device or RS-232 lets the supply join an automated test rig at the same control reach as the UDP3303C; five preset storage groups (M1–M5) and a Digital I/O hardware ON/OFF pin pair complete the programmable workflow set. For higher-power R&D bench work, characterization sweeps in small-team test labs, and industrial maintenance benches where 5A on a programmable linear earns its place, the UDP3305C is the right point in the UDP3000C family.
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Three Channels, 315W Total — SCPI Programmable — CH1 and CH2: 0–30V / 0–5A adjustable. CH3: switchable 1.8V / 2.5V / 3.3V / 5V at 3.2A. SCPI control over USB-Device or RS-232.
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5A Per Adjustable Channel — Headroom for higher-power loads where the UDP3303C runs short: small motors, transmitter front-ends, higher-current LED drive, parallel-mode 10A loads.
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CH1+CH2 Parallel Mode to 10A — Software-routed parallel combination delivers up to 10A on a single output without external wiring between channel terminals. No jumper cables, no shorting bars.
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CH3 Logic-Rail Selector — Single front-panel button cycles CH3 through 1.8V / 2.5V / 3.3V / 5V at 3.2A. CMOS, microcontroller cores, legacy TTL, USB-class — covered without sacrificing CH1/CH2.
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Linear Topology, ≤1 mVrms Ripple — Load regulation tightens to ≤0.01% + 3 mV at currents ≤3A and ≤0.02% + 5 mV above 3A. The slightly relaxed spec at higher currents reflects pass-element behavior, not a soft cutoff.
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Programming Accuracy ≤0.1% + 30 mV — Voltage programming accuracy ≤0.1% + 30 mV; current programming accuracy ≤0.5% + 2 mA across the full 5A range.
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10 mV / 1 mA Resolution — Four-digit voltage and current display per channel on EBTN LCD.
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Series Mode to 60V — Front-panel button combines CH1+CH2 in series for up to 60V output. SCPI exposes the same mode for automated test integration.
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OVP / OCP / OTP Protection — Configurable per-channel thresholds, plus over-temperature shutdown and keypad lock.
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Five Preset Storage Groups — M1–M5 store full instrument states for fast bench setup. Shutdown memory restores last settings on power-up.
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Front-Panel 5V/2A USB Charging Port (CH4) — Independent 5V/2A USB-A charging output. Charging output only — the data interfaces are USB-Device and RS-232 on the back panel.
Detailed Features
5 Amps Per Channel — Real Bench Workhorse
The UDP3305C is the supply you reach for when 3A on the UDP3303C runs out before the workload does. Class-AB audio amplifiers, motor drivers in characterization, RF transmitter front-ends in alignment, prototype boards with high-current LED arrays — all live above the 3A line. Two adjustable channels at 0–30V/5A give you headroom on each rail; the parallel-mode 10A combination on CH1+CH2 handles the genuinely current-hungry workloads where bench power is the constraint. Load regulation tightens to ≤0.01% + 3 mV at currents up to 3A and ≤0.02% + 5 mV above 3A — the slightly relaxed spec at higher currents reflects pass-element behavior, not a soft cutoff. Linear topology, ≤1 mVrms ripple, full SCPI control across the entire 5A range.
Series, Parallel, and Tracking — One Button
CH1 and CH2 combine in series for up to 60V output, in parallel for up to 10A, and in master-slave tracking for matched-rail testing — all from front-panel buttons, no jumper cables, no shorting bars, no risk of miswiring. Series mode pairs CH1+ and CH2− as the live output terminals; parallel mode pairs CH1+/CH2+ as the high-current positive output. SCPI exposes the same modes for automated test integration. For benches that occasionally need a 60V rail for a higher-voltage prototype or a 10A rail for a current-hungry load, the configurability is built into the platform — no second supply required.
Applications
Higher-Power R&D Bench
5A per adjustable channel handles class-AB amplifier rails, motor driver characterization, RF transmitter alignment, and any prototype where 3A on the lower-tier supply runs short. SCPI control scripts the test sequence; ripple under 1 mVrms keeps supply noise out of the measurement at currents up to 5A.
Industrial Maintenance & Service
Programmable linear bench supply at 5A current capability for board-level service work and equipment test. SCPI over RS-232 integrates into existing maintenance shop test fixtures; OVP/OCP per-channel protection survives the connection mistakes that happen at 6am.
Small-Team Test Lab Characterization
SCPI over USB-Device and RS-232 integrates into LabVIEW, Python-VISA, and shell-driven test frameworks. Five preset groups speed bench setup between projects. Parallel-mode 10A handles high-current characterization the smaller-current platforms in this family can't source.
Teaching Labs & Higher-Power Curriculum
Per-station cost that lets a 20-bench classroom stay inside budget — with the current capability for higher-power lab exercises (motor drive, power amplifiers, LED arrays).
