Additional power circuit design for USB devices
Source: InternetPublisher:刘德华河北分华 Keywords: USB power circuit circuit design Updated: 2021/10/01
Most of the USB devices used today sometimes cause lack of power issues. How do you know the maximum current that can be drawn from a single USB connector is limited to 500mA . If your device requires more current, then it must include an additional USB port, which may not be available. This problem can be solved with an additional tool that uses an external unstable power supply and converts it to 5 volts.
There are two different methods you can use. There are two different methods you can use. The first, and maybe the simplest - use a simple linear regulator, but this causes other problems - wasted consumption power, but you can go the other way and use a pulse transformer, which is much more economical.
Note: The basis of the converter is a PWM controller based on the LM 2575-5 integrated circuit with an output of 5 Volts up to 1A. Enable/disable the converter using 5-pin on/off, controlled transistor VT 1.
- How to Make a Soft Latch Circuit
- Build a simple buck-boost regulator and test it on a breadboard
- Schematic diagram of car cigarette lighter to USB power port
- Introduction and principle analysis of switching regulated power supply
- Step-down power supply for driving relays
- Brief Analysis of the Working Principle of AC Voltage Stabilizer Circuit
- Boost drive circuit composed of RT8450
- LM317 regulated power supply
- MAX1811 Lithium Battery Charger Production
- Homemade home inverter circuit diagram
- Importance of Voltage Supervisors and Output Topology Selection
- Design of adjustable DC stabilized power supply circuit module
- DC 12V to AC 100V inverter power supply circuit design
- Commonly used power circuits in printers
- 4-phase CPU power circuit using HIP6301 and HIP6602 chips
- 500A-6V single-phase thyristor voltage regulating electroplating power supply circuit
- Single LTC power circuit
- DC power supply circuit for semiconductor radio
- Common power circuits and applications 03
- USB lithium battery charging circuit and PCB schematic diagram