AMG-XB404 Datasheet, PDF (17/73 Pages) alpha microelectronics gmbh – Fully Integrated Single Motor Controller for Electrical Motors

AMG-XB404
Fully Integrated Single Motor Controller for Electrical Motors
8 bit
on-chip bus
DMCE
23
TRIG
RDY
10
1/x
12
ADC
Bus-IF
TRIG
RDY
PFC
DATA
10
TUN
SOC
EOC
MUXSEL
9
ADC
14
15
Measuring
Amplifier
+
5
-
-
2_V
+
O
MUX
V
OFFS
+
Temperature
1
-
monitor
V
CC
VDD monitor
+
1
-
ADC Ch. 0..2
PFC AC voltage
PFC DC voltage
R
2
R
1
V
PFC AC current
I
DMCE0 current
Figure 8: XB404 ADAQ block schematic
5.3.2. Analog Input Signal Ranges
The input signal range at the analog input pins of the general purpose ADC channels, the DC bus
voltage, the rectified AC voltage, DMCE's current signals and PFC AC current signal is a nominal
input voltage range of 0..5V.
The ADC input voltage for the current signal inputs can be calculated as:
V
O
=−V
I^â‹
R₂
R₁
V
OFFS
and is shown in figure 9 (see also figure 8 p. 17). VOFFS of the DMCE's current channels and the
PFC's current channel is different because the DMCE's currents may have either polarity whereas
the PFC's current is always smaller than zero.
.
AMG-XB404
Revision: A
2. Nov. 2012 © All rights reserved
Page 17 of 73