|
|
This output is a
PWM (pulse width modulated) signal with a configured duty cycle and variable
frequency controlled by the design logic.
The PWM frequency
is variable from 50% to 200% of a configured base frequency. The “percentage” value is provided by the
design logic. The PWM frequency at the
output pin is equal to the BaseFrequency*PercentageValue/100. (Example: BaseFrequency
= 1000Hz, PercentageValue = 150, PWM frequency = 1500
Hz)
This output is a
high side switch, which depending on the configuration, can source 12V and from
5A.
Hardware Interface: The PSoC pin drives the
output directly or through a high voltage and current rated MOSFET. An optional
diode protects the MOSFET when used with inductive loads.
Software Interface: The PWM frequency is controlled with an 8-bit unsigned
value between 50 and 200. This value is
the percentage of the configured base frequency that will yield the desired PWM
output frequency. (Example: 50 results
in a generated PWM frequency of 0.50*BaseFrequency,
200 results in a generated PWM frequency of 2.0*BaseFrequency)
User-Configurable
properties.
· DutyCycle: the duty cycle value
determines the portion of the signal period that the output is high. The duty cycle is expressed as a percentage –
from 0 to 100%. (Example: 45% is 45)
· BaseFrequency: this is the output frequency
of the PWM when the associated percentage value is equal to 100. The output frequency of the PWM is calculated
using this property and the percentage value determined by the driver transfer
function.
Non-Configurable
properties.
· VA Mode: 12V 5A High Side
· Polarity: Positive
· Voltage: 14V (max)
·
Current: 5A (max)