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GW Instek PSW-Series

GW Instek

Programmable Switching D.C. Power Supply

The PSW-Series is a single-output multi-range programmable switching DC Power Supply covering a power range up to 1080W. This series of products include fifteen models with the combination of 30V, 80V, 160V, 250V, and 800V rated voltages and 360W, 720W and 1080W maximum output powers.

For order quantity more than 50, please feel free to request wholesale quotation

  • Description
  • key features
  • Specification
  • Technical data


The multi-range feature allows the flexible and efficient configuration of voltage and current within the rated power range.


As the PSW-Series can be connected in series for maximum 2 units or in parallel for maximum 3 units, the capability of connecting multiple PSW units for higher voltage or higher current output provides a broad coverage of applications. With the flexibility of multi-range power utilization and series/parallel connection, the PSW Series significantly reduces the user’s investment for various power supply products to accommodate the projects with different power requirements.


The CV/CC priority selection of the PSW-Series is a very useful feature for DUT protection. The conventional power supply normally operates under CV mode when the power output is turned on. This could bring a high inrush current to the capacitive load or current-intensive load at the power output-on stage. Taking the I-V curve verification of LED as an example, it becomes a very challenging task to perform this measurement using a conventional power supply. With LED connected to a power supply under CV mode as the initial setting, when the power output is turned on and the voltage rises to the LED forward voltage, the current will suddenly peak up and exceed the preset value of current limit. Upon detecting this high current, the power supply starts the transition from CV mode to CC mode.


Though the current becomes stable after the CC mode is activated, the current spike occurred at the CV and CC crossover point may possibly damage the DUT. At the power output-on stage, the PSW-Series is able to run under CC priority to limit the current spike occurred at the threshold voltage and therefore protect DUT from the inrush current damage.

PSW-Series Multi-Range DC Power Supply

Model Name Type Voltage Current Power
PSW 30-36 I 0 ~ 30V 0 ~ 36A 360W
PSW 30-72 II 0 ~ 30V 0 ~ 72A 720W
PSW 30-108 III 0 ~ 30V 0 ~ 108A 1080W
PSW 80-13.5 I 0 ~ 80V 0 ~ 13.5A 360W
PSW 80-27 II 0 ~ 80V 0 ~ 27A 720W
PSW 80-40.5 III 0 ~ 80V 0 ~ 40.5A 1080W
PSW 160-7.2 I 0 ~ 160V 0 ~ 7.2A 360W
PSW 160-14.4 II 0 ~ 160V 0 ~ 14.4A 720W
PSW 160-21.6 III 0 ~ 160V 0 ~ 21.6A 1080W
PSW 250-4.5 I 0 ~ 250V 0 ~ 4.5A 360W
PSW 250-9 II 0 ~ 250V 0 ~ 9A 720W
PSW 250-13.5 III 0 ~ 250V 0 ~ 13.5A 1080W
PSW 800-1.44 I 0 ~ 800V 0 ~ 1.44A 360W
PSW 800-2.88 II 0 ~ 800V 0 ~ 2.88A 720W
PSW 800-4.32 III 0 ~ 800V 0 ~ 4.32A 1080W


key features

  • Voltage Rating: 30V/80V/160V/250V/800V, Output Power Rating: 360W ~ 1080W
  • Constant Power Output for Multiple Range (V&I) Operation
  • CV/CC Priority; Particularly Suitable for the Battery and LED Industry
  • Adjustable Slew Rate
  • Series Operation: Up to 2 units (30V, 80V, 160V models only)
  • Parallel Operation: Up to 3 units
  • High Efficiency and High Power Density
  • 1/2, 1/3, 1/6 Rack Mount Size Design (EIA/JIS Standard) for 360W/720W/1080W
  • Standard Interface: LAN,USB,Analog Control Interface
  • Optional Interface: GPIB-USB Adaptor, RS232-USB Cable
  • LabView Driver


Specification [Click Here To Download]

Technical data

Technical data

Datasheet [Click Here To Download