Technosoft 2018
9
iPOS4808 VX Technical Reference
Motor Outputs (A/A+, B/A-, C/B+, BR/B-)
Min.
Typ.
Max.
Units
Nominal output current, continuous
for DC brushed, steppers and
BLDC motors with Hall-based
trapezoidal control
iPOS4808
8
A
for PMSM motors with FOC
sinusoidal control (sinusoidal
amplitude value)
iPOS4808
8
for PMSM motors with FOC
sinusoidal control (sinusoidal
effective value)
iPOS4808
5.67
Motor output current, peak
maximum 2.5s
iPOS4808
-20
+20
A
Short-circuit protection threshold
measurement range
iPOS4808
±26
TBD
A
Short-circuit protection delay
5
10
µ
S
On-state voltage drop
Nominal output current; including typical
mating connector contact resistance
±0.3
±0.5
V
Off-state leakage current
±0.5
±1
mA
Motor inductance (phase-to-phase)
Recommended value, for
ripple ±5% of measurement
range; +V
MOT
= 48 V
F
PWM
= 20 kHz
330
µ
H
F
PWM
= 40 kHz
150
F
PWM
= 60 kHz
120
F
PWM
= 80 kHz
80
F
PWM
= 100 kHz
60
Absolute minimum value,
limited by short-circuit
protection; +V
MOT
= 48 V
F
PWM
= 20 kHz
120
µ
H
F
PWM
= 40 kHz
40
F
PWM
= 60 kHz
30
F
PWM
= 80 kHz
15
F
PWM
= 100 kHz
8
Motor electrical time-constant (L/R)
Recommended value, for
±5% current measurement
error due to ripple
F
PWM
= 20 kHz
250
µs
F
PWM
= 40 kHz
125
F
PWM
= 60 kHz
100
F
PWM
= 80 kHz
63
F
PWM
= 100 kHz
50
Current measurement accuracy
FS = Full Scale
±4
±8
%FS
Digital Inputs (IN0, IN1, IN2/LSP, IN3/LSN, IN4/Enable, IN5, IN6, IN7)
Min.
Typ.
Max.
Units
Mode compliance
TTL / CMOS / LVTTL (3.3V) / Open-
collector / NPN / 24V outputs
Default state
Input floating (wiring disconnected)
Logic HIGH
Input voltage
Logic “LOW”
0
0.8
V
Logic “HIGH”
2
5÷24
Floating voltage (not connected)
3
Absolute maximum, continuous
-10
+30
Absolute maximum, surge (duration
≤
1s)
†
-20
+40
Input current
Logic “LOW”; Pulled to GND
0.6
1
mA
Logic “HIGH”; Internal 4.7K
Ω
pull-up to +3.3
0
0
0
Logic “HIGH”; Pulled to +5V
0.15
0.2
Logic “HIGH”; Pulled to +24V
2
2.5
Input frequency
0
150
kHz
Minimum pulse width
3.3
µS
ESD protection
Human body model
±5
kV
