MotoHawk:Blocks:Hbridge Out

HBridge Output

This MotoHawk™ block is configurable for controlling pulse-width modulation (PWM) output specifically for HBridges.

Block ID

HBridge_Output

Library

MotoHawk_lib/Analog I/O Blocks

Description

This block includes the Frequency and Duty Cycle (DC) inputs, DC values range int16 -4096 to 4096, where 0 represents 0% and 4096 is 100%. Positive values have the current flow from H(A/+) to H(B/-) negative values will have current flow from H(B/-) to H(A/+). The Frequency input is uint32 which represents 0.01Hz. This block differs from the [PWMOutput.html PWM] block in that it holds both legs low and PWMs one leg high for current flow. The PWM block will hold both legs high and PWM one of the legs low. The percent braking PWMs both legs low for the duty cycle and will float rest of the time.

Block Parameters

Parameter Field	Values	Comments/Description
Name	Alpha-numeric text, single-quote enclosed	Name as displayed in MotoTune, for block. No special characters, such as spaces, dashes, commas (underscore allowed)
Resource	Drop-down list	Select from available resource, per target ECU, such as H-bridge, etc.
Input Enable	Check box (enable)	When "Input Enable" is checked, the output may be dynamically controlled. When disabled, the output transistors are completely turned off, which will stop all current, but also disable any diagnostics.
Input Brake	Drop-down list	Select "Off/On" to have a boolean switch for braking, or select "Percent" to PWM the brake at the duty cycle specified at the Brake input. A non-zero value on the Brake input overrides the Duty Cycle input. Note: When using Brake in Percent mode, no faults will be reported.
Use Minimum Frequency	Check box (enable)	Enables the Minimum Frequency (Hz) field.
Minimum Frequency (Hz)	Numeric	Setting this value tunes the clocks used for PWM generation and should be set to the minimum expected frequency. The Frequency input is uint32 and each unit represents 0.01Hz.
Use Maximum Frequency	Check box (enable)	Enables the Maximum Frequency (Hz) field.
Maximum Frequency (Hz)	Numeric	Setting this value tunes the clocks used for PWM generation and should be set to the maximum expected frequency. The Frequency input is uint32 and each unit represents 0.01Hz.