GW Instek: 720W Multi-Range Programmable Switching D.C. Power Supply


Programmable Switching D.C. Power Supply

Categories: , , SKU: GWI00793


PSW-Series Programmable Switching D.C. Power Supply


GW Instek has incorporated a 40V output voltage selection into the existing PSW series product line by introducing three new models featuring power capacities of 360W, 720W and 1080W. After adding these three new models to the family, the PSW series now has a total of 18 models with rated voltages of 30V, 40V, 80V, 160V, 250V and 800V, and maximum output powers of 360W, 720W and 1080W respectively. Inheriting all the advantages of the PSW series multi-range programmable switching DC power supply, the new 40V models make the voltage/current combination under the existing rated powers more flexible.

The PSW-40V series is a regulated switching DC power supply built upon a high power-efficiency platform containing the technology of Interleaved Power Factor Corrector and Interleaved DC/DC converter. Owing to this dual-stage design, the PSW series can reduce the heat generated during internal power transformation and deliver a 1kW power output within a very compact unit. The PWM-based topology allows each PSW power supply to broaden its operating range determined by the rated output power and its voltage and current ratings.
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 eighteen models with the combination of 30V, 40V, 80V, 160V, 250V, and 800V rated voltages and 360W, 720W and 1080W maximum output powers. 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.

Parallel operation (3 Units):
PSW 40-54

Single operation

– 40V/54A

2 Units

– 40V/108A

3 Units

– 40V/162A

Series Operation ( 2 Units)

Single Unit

– 40V/54A

2 Units

– 80V/54A


•Voltage Rating: 30V/40V/80V/160V/250V/800V, Output Power Rating: 360W ~ 1080W
•Multi-range Voltage & Current Combinations in One Power Supply
•CV/CC Priority; Particularly Suitable for the Battery and LED Industry
•Adjustable Slew Rate
•Series Operation (2 units in Series) for (30V/40V/80V/160V)
•Parallel Operation (to 3 units Parallel) for (30V/40V/80V/160V/250V/800V)
•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


CD-ROM x1(Programming Manual, User Manual)
Power Cord x1(Region dependent)
GTL-123 Test Lead x 1 (for PSW 30V/40V/80V/160V models)
GTL-240 USB Cable”L” Type x1
PSW-004 Basic Accessories Kit x1(for PSW 30V/40V/80V/160V models)
PSW-008 Basic Accessories Kit x1(for PSW 250V/800V models)
PSW-009 Output terminal cover(for PSW 30V/40V/80V/160V models)
PSW-011 Output terminal cover(for PSW 250V/800V models)
PSW-012 High voltage output terminal(for PSW 250V/800V models)


PSW-001 Accessory Kit
PSW-002 Simple IDC Tool
PSW-003 Contact Removal Tool
PSW-005 Cable for 2 Units of PSW-Series in series mode connection(for PSW 30V/40V/80V/160V models)
PSW-006 Cable for 2 Units of PSW-Series in parallel mode connection
PSW-007 Cable for 3 Units of PSW-Series in parallel mode connection
PSW-010 Large filter (for PSW 720W/1080W models)
GUG-001 GPIB to USB Adaptor
GRA-410-J Rack Mount Kit(JIS)
GRA-410-E Rack Mount Kit(KIA)
GET-001 Extended Terminal with max. 30A(for PSW 30V/40V/80V/160V models)
GET-002 Extended Terminal with max. 10A(for PSW 250V/800V models)
GET-005 Extended European Terminal with max. 20A(for PSW 30V/40V/80V/160V models)
GTL-130 Test Lea: 2x red, 2x black(for PSW 250V/800V models)
GTL-248 GPIB Cable, 2000mm
GTL-250 GPIB Cable, 600mm
GUR-001A USB TO RS-232 Cable, 3000mm

Additional information


Product Code


View Datasheet

View Manual