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  • Buck Boost vs. Buck Converter Battery Life for Portable 3.3V Micro Hard Disk Drive Applications
    drive voltage of. 3.3V, an obvious dilemma associated with this application is whether to use a low dropout DC/DC step-down. (buck) converter or a step-down/step-up (buck-boost) converter. A buck converter (Figure 1) provides the most efficient solution with the smallest external components
  • Buck-Boost LED Driver Using the PIC16F785 MCU
    This application note presents the design equations, schematics and source code for a 5.5W power LED driver using the PIC16F785 MCU. The application, as shown, can be connected to operate as a buck-boost converter or a boost converter. The PIC16F785 makes a great choice for this application because
  • Generating High Voltage Using the PIC16C781/782
    displays and LCDs. However, for this technical brief, the Nixie tube serves as an excellent visual feedback of the PIC16C782 device's ability to generate high voltage from a low-voltage source. This technical brief introduces the boost converter topology operating in Discontinuous mode. As an example
  • Design Alternatives To The TC682 For Performing Inverting Voltage Doubler Functions
    . Assuming that a single-cell Li-Ion battery (with a nominal terminal voltage of 3.6V) is powering the system, a regulating DC/DC boost converter is needed to generate the +5V regulated input supply to the TC682.
  • Preventing Subsystem Brownouts in Mobile Devices
    With the ever-increasing performance of application processors and GPUs used in mobile devices, the need for a buck-boost regulator to stabilize the Li-ion battery supply-voltage terminals is becoming more and more important. This white paper examines a typical power subsystem architecture used
  • Step-Up Switching Regulators
    When a low DC voltage source is used to power circuitry operating at high voltage levels, a step-up (boost) converter can be used. The input (lower voltage) is utilized to charge a passive component, such as a capacitor or inductor by the switching action of a transistor(s). Energy is stored
  • Inverting Applications Made Simple
    Designers often require power sources with negative output voltages. There are many different ways to produce a negative output voltage from a positive input voltage. One option is a polarity-inverting buck-boost converter. The advantages of this topology are that it requires low component count
  • Connecting LEDs: Serial vs. Parallel
    converter to create voltages higher and lower than the battery, depending on the state of charge. Connecting all LEDs in series requires a boost converter to create a voltage higher than the power source. In practice, series connected LEDs are powered from DC/DC inductive boost converters, whereas

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