DOC-84193-1 – (06/2017)
Page 1
1
PE22100
UltraCMOS® Isolated Transformer Driver
Introduction
Introduction
The PE22100 is a push pull driver for driving small transformers for isolated power supply applications. The
PE22100 drives the primary of a center-tapped transformer such as the 782100 family from Murata from a 3.0V
or a 5V supply to deliver an isolated power supply.
The device consists of an on-chip oscillator whose frequency is set by an external capacitor. The oscillator
output is divided by two in frequency to create anti-phase clock signals that drive two power switches. The
device also contains an internal current limit and thermal cutout. The PE22100 is available in a 2 x 2 x 0.5 mm
QFN package and is specified for operation from –40° to +125°C.
The PE22100 evaluation board allows the user to evaluate the PE22100 transformer driver IC in a typical
operating circuit.
The PE22100 is an isolated transformer driver capable of providing up to 1W of isolated power via an external
transformer.
The PE22100 evaluation kit (EVK) user’s manual includes the evaluation board schematic, circuit description,
quick start guide, and measurement results.
Application Support
For any technical inquiries regarding the evaluation kit or software, please visit applications support at
www.psemi.com (fastest response) or call (858) 731-9400.
Evaluation Kit Contents and Requirements
Kit Contents
The PE22100 EVK includes the following hardware required to evaluate the transformer driver.
Table 1 •
PE22100 Evaluation Kit Contents
Quality
Description
1
PE22100 transformer driver evaluation board assembly (PRT-66476)
