AMG-PS132
FACT SHEET
DSP-based PFC for Power Factors close to Unity,
including Low Voltage DC Power Supply and MCU
The AMG-PS132 is a universal DSP-based PFC solution with switching-mode power supply to
be used in applications requiring power factor values close to unity and a highly efficient DC
power supply. Typical application areas for the AMG-PS132 are high power motors and light-
ing systems. The power factor controller (PFC) is based on boost topology and is fully soft-
ware controlled by the DSP. The device includes an AVR
®
compatible MCU with peripherals.
The PFC algorithm is initially loaded from the MCU into the DSP. PFC parameters can also be
changed during run time. The IC contains an auxiliary switching-mode power supply in flyback
topology with current feedback. It is designed to supply external circuitry with a highly stable
low voltage.
Highlights
Independent DSP based PFC regulation engine (values >0.99)
8-bit AVR
®
compatible MCU
Secondary SMPS controller for auxiliary low voltage generation
Example Application Circuit
AC
VDC
15V
5V
VCC
DRV
AMG-PS132
VAC
PFCIOUT
PFCIINN
DSP
PFC_PWM
VDC
DC
SCL
I
2
C
SDA
AVR
®
MCU
GPIO
15V
SWDRV
SWIFB
SWVFB
SWVCOMP
DRV
GND
Figure 1: Simplified example application circuit.
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ALPHA-MICRO [ ALPHA MICROELECTRONICS GMBH ]
