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.
www.alpha-microelectronics.de
am.info@alpha-microelectronics.de
© 2010
AMG-PS132
FACT SHEET
Features
PFC
Fully reconfigurable digitally controlled power factor controller in CMOS technology
On-chip AC phase-locked sinusoidal 45Hz to 65Hz oscillator for mains noise rejection
High accuracy through on-chip 10-bit ADC and dedicated RISC processor
Achievable high efficiency (>95%) and power factor (>0.99)
Broad range of user selectable PWM frequency (15kHz to 200kHz)
Low EMC filter requirements due to use of spread-spectrum PWM
Two-wire interface to load software
Supports 90V to 275V; 50/60Hz mains standards
On-chip PLL with 1% RC reference oscillator to generate 64MHz clock signal
On-chip over-current and short-circuit protection, brown-out control
Ambient temperature range: -25°C to 85°C
Package: TQFP64 10x10 (smaller packages in evaluation)
Switching-mode Power Supply Controller
Current-mode switching power supply controller in CMOS technology
Immediate response to low-frequency AC line swings
Output voltage and current levels determined by external components only
Energy saving cycle-skipping mode for operation with low levels of output power
On-chip reference voltage source
AVR
®
compatible MCU
32k EEPROM, 1k SRAM
3 Timers, Uart, SPI, I
2
C compatible
10-bit 2Msps ADC
GPIO
JTAG
Available options
On-chip gate drivers
OTP or EEPROM
Ordering Information
AMG-PS132-ITQ64T
Development Tools
Application notes: AMG-AN-PS132
Evaluation board
GUI for easy parameter change
Debug Adapter
AVR
®
is a registered Trademark of Atmel.
www.alpha-microelectronics.de
am.info@alpha-microelectronics.de
© 2010
