Parker Vansco - High-Side Output Installation Connections

User Guide 29
Outputs
High-Side Output Specifications
Item
Min
Nom
Max
Unit
Operational voltage range
6
-
32
V
Overvoltage
-
-
36
V
Output current range
0
-
3
A
Load impedance @ 12 V
4
-
-
Ω
PWM frequency
5
-
500
Hz
PWM resolution
11
-
0.1
-
%
Flyback diode current
12
-
-
1
A
Short-circuit current limit
(Tjunc = -40ºC to +150ºC)
9
15
23
A
Short-circuit trip time
-
2
-
ms
Thermal protection
-
150
-
ºC
Digital feedback negative threshold
1.5
-
-
V
Digital feedback positive threshold
-
-
3.58
V
Digital feedback cutoff frequency
-
26
-
kHz
Open-load detection – max detectable load
@ 12 V
-
-
1.4 k
Ω
Open-load detection pull-up
9.8 k
-
10.2
kΩ
Current sensing
-
No
-
-
Analog feedback
-
No
-
-
4.1.2. High-Side Output Installation Connections
When connecting high-side outputs, note that
 High-side outputs are connected to an internal bus bar, which is connected to
the battery. The bus bar is also connected to logic power (VBATT), and both
share the same connector pins.
 High-side outputs can provide switched battery power to any load type in a
vehicle.
 High-side outputs can source up to 3.0 A max.
 High-side outputs have internal flyback diodes, which are needed when
driving inductive loads (the flyback diodes absorb electrical energy when the
load is turned off).
Inductive loads will create an average current flow that moves out of the high-side
output. When the output is on, the current flows through the output driver, and
when the output is off, the current flows through the flyback diode. A duty cycle
11
This is the typical value. Actual value is dependent on the base frequency, since the counter used for this operation has a
finite number of steps.
12
This is an average current value, meaning a worst case PWM current of 2 A at 50% duty cycle is possible with inductive
loads.