AC100 SERIES
Rev C December 2007
1. Introduction
This application note describes the features and functions of Intronics
power’s AC100 series of open frame, Isolated AC-DC Converters.
These are highly efficient, reliable and compact, high power density,
single output AC/DC converters. Ultra-high efficiency operation is
achieved through the use of synchronous rectification and drive control
techniques. The modules are fully protected against short circuit and
over-voltage conditions. Intronics power’s world class automated
manufacturing methods, together with an extensive testing and
qualification program; ensure that all AC100 series converters are
extremely reliable.
A block diagram of the AC100 series converter is shown in Figure 1.
Extremely high efficiency power conversion is achieved through the use
of synchronous rectification and drive techniques. Essentially, the
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Universal Input Range
Regulated Outputs
Continuous Short Circuit Protection
3” X 5” size
Open-Frame Type
3. General Description
2. AC100 Converter Features
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100W Isolated Output
High Efficiency Up to 85%
Fixed Switching Frequency
Power factor correction Up to 0.9
powerful AC100 series topology is based on an isolated synchronous
forward converter. The control loop is optimized for unconditional
stability, fast transient response and a very tight line and load
regulation. The output voltage can be adjusted from +5% to –5%, using
a variable resistor.
AC Input
Input
Filter
Bridge
Rectifier
MOSFET
Switch
Transformer
MOSFET
Rectifier
Output
Filter
Vout
PFC
Controller
PFC Choke &
MOSFET Switch
PWM
Controller
Optocoupler
Isolation
Refernce
&Error AMP
Figure 1. Electrical Block Diagram
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INTRONICS [ INTRONICS POWER, INC. ]
