1. MOSFET Driven Load
1.1 Definition
A MOSFET driven load refers to a load that can be driven by components with switching functions such as switches, MOSFETs, or transistors. Common types include:
(1) Resistive Load: Devices that generate heat through a resistive wire.
(2) Inductive Load: Such as electromagnetic coils, solenoids, relays, solenoid valves, and pinch valves.
(3) DC Motors: Such as permanent magnet motors, brushless DC motors, brushed DC motors, and diaphragm pumps.
(4) LED lights, fans, buzzers, etc.
1.2 Load Response Time
The time it takes for the load to switch from an off state to a stable on state, and from an on state to a stable off state, is influenced by the characteristics of the load itself and the signal delay in the control circuit. This response time must be considered in the program design.
2. Verilog Code
2.1 Function Description
(1) Control module for loads such as solenoids, solenoid valves, and DC motors that can be driven by MOSFETs.
(2) Load operation phases: Full power on phase → Hold phase → Off phase.
(3) Load operation time = Full power on time + Hold time + Off time.
(4) Load operation modes:
① Normal mode: Hold phase duty cycle = 100%
② Energy-saving mode: Hold phase duty cycle < 100%
(5) Control commands:
IDLE = 2’d0; // Idle
INT = 2’d1; // Interrupt
RUN = 2’d2; // Running
2.2 Timing Diagram
2.3 Source Code
See the code on CSDN account https://blog.csdn.net/sinat_36503471?type=blog2.4 TestBench Simulation Code
See the code on CSDN account https://blog.csdn.net/sinat_36503471?type=blog2.5 Simulation Results
