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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 48V and 10A.
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 and duty cycle are controlled by one
16 bit unsigned value. The control
values for the frequency and duty cycle must be combined into one 16-bit value.
The high order
byte controls the output frequency of the PWM.
The PWM frequency is controlled with a 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)
The low order byte
controls the duty cycle of the PWM. The
PWM duty cycle is controlled with a value between 0 and 100. This value is the duty cycle percentage in 1%
increments (Example: 45 results in 45%).
User Configurable Properties
·
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: 48V 10A High Side
·
Polarity: Positive
·
Voltage: 53V (max)
·
Current: 10A
(max)