Multi Channel Tracking DC Power SupplyPMP Series

Multi-output power supply characterized by multi-channel tracking and positive polarity

The small-size PMP Series is a DC power supply that supports simple functions and provides constant multi-output voltage (CV) and current (CC). The past multi-output power supply can provide only two types of concurrently variable output. The PMP Series, however, implements “Multi-channel Tracking” that allows all types of output to be varied concurrently. It also supports a “Delay Function” that can change output on/off timing, and a “Memory Function” that can store output settings. Moreover, the PMP Series is equipped with an external contact that enables control over turning on and off output, and over calling the memory. All the types of output this product provides have positive polarity(Only three-output model), which allows the product to be used as a power supply for developing digital equipment and other devices not requiring a negative power supply circuit. Furthermore, this product, which supports two common systems, is well adapted to an application for one power supply unit to offer digital and analog signals that have different common potentials.


Tracking function

Operation examples of the tracking function

This function allows all outputs to be varied concurrently in the same ratio or width (absolute value). All outputs can be varied from 0 V (or 0 A) to the rated voltage (or the rated current) in the operational region. The channel subject to the tracking operation and the reference channel can be set freely. This is useful because it eliminates the need to vary the outputs for various circuit voltages on the board on a channel-by-channel basis, enabling the outputs on the individual channels to be varied concurrently. The tracking function provides two different methods below.

Absolute value varying

The channel subject to tracking varies in output voltage value (or current value) by the same value (absolute value) as the amount of variation in the output voltage value (or current value) of the reference channel.

Ratio varying

This function varies the value of output voltage ( or current) of the specified channel in proportion (%) to the changes in the reference channel.
*Variable range : 0.0% to 200.0%

Two common systems are available

The three-output models support CH1 and CH2/3, while the four-output model supports CH1/2 and CH3/4. A single unit can supply power to a circuit with different common potentials or a circuit in which the digital signal system is separated from the analog signal system.

Delay function

This function allows timing for turning on or off each output to be varied. It allows setting of the period from the time the OUTPUT switch is pressed until each output is turned on (ON DELAY) or turned off (OFF DELAY). Allowable delay period range: 0.1 s to 99.9 s

If the power is not applied in a predetermined sequence, the entire system may run out of control and, in the worse case, may cause damage. Thus, delay control is necessary for the ON times of power outputs. It is also necessary for the OFF times of power outputs. This function is very useful for driving circuits requiring such control.

Note: The actual rise time after the output is turned on and the actual fall time after it is turned off differ depending on the output and load conditions. The conceptual drawing ignores the rise and fall times. Also, there is an internal processing time from the time the OUTPUT switch is pressed until the output is turned on or off, so that even if the time is set to 0 s, there will be an error of several tens of milliseconds.

Delay function

Communications interface

Communications interface(Factory option)

Three types of interface for controlling a PMP series power supply from a personal computer will be available as a factory option. By mounting the interface, the power supply can be started up without an external controller, and can be used as a system power supply for use in manufacturing processes.

Memory function

The memory function allows storing of the settings of each output (three memories).
It allows storing of up to three combinations of the voltage and current settings and delay set time for each output and recalling of them when needed.

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