B&K Precision 9180 Series - Datasheet - Manual (Page 4)

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Programmable Dual-Range DC Power Supplies
9170 & 9180 series
4
* Low current mode for high voltage models 9184 and 9185 only.
LED mode
With LED mode active, inrush current will be eliminated or minimized to protect the UUT.
Low current mode*
This unique function enables the power supply to
minimize the voltage rise time in a controlled
manner. This mode is used when operating at a
low current (< 1 A) and quick transitions from a
high-to-low or low-to-high voltage are needed.
To address the growing LED market, the 9170/9180 series design incorporates special LED test modes for efficient and safe electrical tests of LED panels. Powering
LEDs with conventional power supplies will potentially cause permanent damage to the UUT or limit its lifespan due to excessive inrush current at power up and the
non-linear characteristics of the LED’s I-V curve. These power supplies feature two distinct operating modes suitable for LED testing in a manufacturing or R&D
environment and other special applications requiring a controlled rise time at power up without generating any inrush current.
Example LED test setup
Low current mode OFF Low current mode ON
Current flow during power up with LED mode enabled
9170/9180 Series Operating Range
Voltage rise time with and without low current mode enabled
Inrush current
Output ON
20 ms 5 ms
Output ON
Test modes for LED and other special applications
LED mode OFF
LED mode ON
The 9170/9180 series provide a unique dual
range feature that offers the best of both worlds
by supplying two different ranges. Users can
select between high and low range operation for
either more voltage or more current depending
on your application, avoiding the higher cost of
buying more power than necessary.
Two power supplies in one