Datasheet

www.bkprecision.com
Programmable Dual-Range DC Power Supplies
9170B & 9180B series
4
* Low current mode for high voltage models 9184B and 9185B 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 9170B/9180B series design incorporates special LED test modes for efficient and safe electrical tests of LED panels. Power-
ing LEDs with conventional power supplies will potentially cause permanent damage to the UUT or limit its lifespan. This damage is caused by the 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
9170B/9180B Series Operating Range
Voltage rise time with and without low current mode enabled
Inrush current
Output ON
Output ON
Test modes for LED and other special applications
LED mode OFF
LED mode ON
The 9170B/9180B 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