Z+ Programmable DC Power Supplies

Z+ Series of programmable DC power supplies offer high-density, high efficiency, 2U format, bench-top, and rack-mountable power supplies to meet the demands of a wide variety of ATE, laboratory, and OEM applications, including test & measurement, semiconductor burn-in, component test, LED/laser test, RF amplifiers, electromagnetic & electrochemical applications.

The Z+ provides 200, 400, 600, or 800 W of output power with an output voltage range from 0 to 100V DC and output currents up to 40 A. The standard models are 3 x 3 in. (76 x 76 mm) (H x W), so up to 6 units can be installed in the optional 19 in. (483 mm) rack housing, and blanking plates are available for unused slots. Options for front-panel output jacks and multiple-unit housings are available for bench-top applications. 

The Z+ programmable power supply has comprehensive front panel controls with individual rotary encoders for output current and voltage, and access to power supply settings such as OVP level, start-up modes, remote control, and monitoring parameters. Separate 4-digit volt and current displays are provided along with function/status LEDs, pushbuttons for output preview, output on/off, fine/coarse, and other features. The Z+ Series offers arbitrary function generation and up to 6 preprogrammed functions can be stored which makes it ideal for automotive or laser simulation tasks. Z+ power supplies feature a very fast command processing time, output sequencing, and 2 programmable output pins that, for example, could be used to control isolation relays. 

All models can operate in either a constant-current or constant-voltage mode from a wide 85 to 265V AC input. They feature active power factor correction, variable speed fans, and extensive safety features including user-selectable safe-start and auto-restart. With safe-start, the power supply returns to the last used settings after a power interruption, but with the output disabled. With auto-restart, the supply resumes normal operation without intervention after a power interruption, thereby meeting typical requirements for unattended use.

Common to all models is the built-in USB, RS232, and RS485 interfaces. Using the standard serial RS485 interface between units enables daisy chain control of up to 31 power supplies on the same bus. Analog remote programming and monitoring is user-selectable from 0 to 5V or 0 to 10V. Other digital and isolated analog interfaces are optional. The GPIB interface is IEEE-488.2 SCPI compliant and multidrop (only 1 unit needs the IEEE interface, which can then feed the commands to others via RS485).

LabView and LabWindows drivers are also available. Isolated analog programming and monitoring options include either 0 to 5V or 0 to 10V, and 4 to 20 mA control. An LXI Class C-compliant LAN interface is also available. Higher power systems can be achieved by connecting up to 6 identical units in parallel with active current sharing. When connected as a master/slave parallel configuration, the master unit reports the total system output current, which means that up to 6 units appear as a single power supply to the remote controller, thereby simplifying operations. Up to 2 units may be connected in series to increase the output voltage or to provide a bipolar output.