A3130 Datasheet, PDF (1/1 Pages) alpha microelectronics gmbh – universal DSP-based PFC solution to be used in applications requiring power factor values close to unity

a3130 general features
The a3130 is a universal DSP-based PFC solution to be used in applications requiring
power factor values close to unity. Typical applications are high-power DC motors and
lighting systems. The controller is based on the boost topology and is fully software-
controlled. The PFC algorithm is loaded from an on-chip non-volatile memory for stand-
alone operation or can be uploaded to the DSP core using a two-wire interface.
Highlights:
 Fully reconfigurable digitally-controlled power factor controller in CMOS
technology
 On-chip AC-phase-locked sinusoidal 45...65Hz oscillator to improve AC-line
noise rejection
 High accuracy through on-chip 10bit ADC and dedicated RISC processor
 Achievable high efficiency (>95%) and power factor (>0.99)
 Broad range of user-selectable PWM frequency (5kHz...200kHz)
 Low EMC filter requirements due to use of spread-spectrum PWM
 Two-wire interface to load software
 Supports 90V...135V and 195V...275V 60/50Hz mains standards
Available Options:
 On-chip gate driver
 On-chip OTP memory for stand-alone operation
example application schematic
Rect.
AC
PFCIC
VDD=5V
64MHz PLL
OTP
Memory
(optional)
SDAT
Two-wire
SCLK _Interface
DSP
Unit
RAM
ADC
AGND
R1
R2
1% RC
Oscillator
PFCDRV
Measuring ^VAC
Amplifiers _VDC
R3
PFCFB
PFCI
L1
15V
DRV
R4
D1
HV
R6
C1
R7
R5
a3130: simplified application schematic