TTI's new PL series of linear regulated laboratory power supplies have a very small bench footprint. Nonetheless, they incorporate a phase-controlled pre-regulator to limit heat dissipation and reduce energy consumption.
Unlike conventional linear regulated power supplies, which dissipate much of their power as heat when supplying low output voltages, the new PL series limits the internally generated voltages, which results in much better energy efficiency.
The phase-controlled pre-regulator operates at line frequency to avoid any of the noise and interference problems associated with high-frequency switching. The power supplies achieve an exceptionally low output noise figure of below 0.4mV RMS at 20MHz measurement bandwidth.
TTI says the PL series has a very high power density for a linear regulated power supply, offering up to 90W from a case just 107mm wide (1/4 rack 3U). This gives it an unusually small bench footprint so that it takes up less space. For rack-mount application, up to four units can be mounted into a single 3U slot.
Voltage and current are set using conventional analogue controls, but digital circuitry is incorporated to enhance the functionality. For example, the settings can be locked at the touch of a button. Other features include V-Span, which enables the range of the analogue controls to be limited to any user-defined span.
High measurement accuracy is matched by excellent regulation and the ability to regulate at the load using the switchable remote sense function. For users working on lower power circuitry, a low current range is available that provides setting and measurement resolution down to 0.1mA.
Three single-output models are currently available offering 0-15V, 0-30V or 0-60V. A dual-output model offers two outputs of 30V at up to 3A or a single output at up to 6A.
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