DC to DC Converter Pulse Reverse Circuit Cost Reduction
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Solution Overview
Problem
The high cost of DC to DC converters is primarily due to the expensive pulse generator component, which is necessary for converting low voltage DC sources into high voltage DC sources suitable for electrical devices.
Innovation Solution
The proposed DC to DC converter replaces the pulse generator with a pulse reverse circuit, utilizing NPN bipolar transistors and a diode to generate reverse square pulses, reducing the overall cost by eliminating the need for the expensive pulse generator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pulse generator is used to generate square pulses for switching transistors, then reliable voltage conversion is achieved, but the converter cost increases significantly
Solution Approach 1:
The patent replaces the expensive pulse generator with a simple RC circuit that generates square pulses. The RC circuit uses inexpensive components (resistors and capacitors) to produce the necessary timing signals, eliminating the need for costly dedicated pulse generator ICs while maintaining reliable operation.
Solution Approach 2:
The patent uses the RC circuit to copy the essential function of the pulse generator - producing square pulses with appropriate timing. Instead of using a complex dedicated device, the invention replicates the pulse generation functionality using basic electronic components that can be easily manufactured and replaced.
2Ease of operation
If a pulse generator is used to control switch transistors, then proper switching timing is achieved, but the device complexity increases
Solution Approach 1:
The patent extracts the essential pulse generation function from the complex pulse generator IC and implements it using a simple RC circuit. By taking out only the necessary timing function and implementing it with basic components, the overall device complexity is reduced while maintaining proper switching control.
Solution Approach 2:
Instead of using a complex active device (pulse generator) to create simple square pulses, the patent inverts the approach by using a simple passive RC circuit to achieve the same pulse generation function, thereby simplifying the overall circuit architecture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design reduces the cost of the DC to DC converter by utilizing a pulse reverse circuit, achieving the same voltage conversion without the expensive pulse generator, thereby lowering the overall system cost while maintaining functionality.
Implementation Method 1
a transformer (230) including a primary winding (231), a sub-primary winding (232), and a secondary winding (233) for outputting a AC (alternating current) voltage
Data Source
AI summary
An exemplary DC to DC converter (200) includes a first DC input (210) connected to a first DC power supply; a second DC input (220) connected to a second DC power supply; a transformer (230) including a primary winding (231), a sub-primary winding (232), and a secondary winding (233) for outputting a AC voltage; a pulse reverse circuit (260) including an input for receiving a square pulse and an output for providing the reverse square pulse; a first switch transistor (240) including a source connected to ground, a drain connected to the first DC input via the primary winding, and a gate connected to the output of the pulse reverse circuit; a second switch transistor (250) including a source connected to ground, a drain connected to ground via the sub-primary winding and a capacitor in series, and a gate connected to the output of the pulse reverse circuit.