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  • D/A Conversion Using PWM and R-2R Ladders to Generate Sine and DTMF Waveforms
    Many embedded applications require the generation of analog signals. Although separate D/A converter IC?s exist on the market today, their extra price makes them prohibitive in cost sensitive embedded control designs. The following application note describes two DAC designs for generation
  • Protection For Switching Regulators
    , thus increasing the efficiency of the regulator. D1 provides a momentary path for the current through LO, RL and is used only during the switch-over time of Q1 turning off and Q2 turning on generated by the PWM. Even though most synchronous PWM IC's provide control and monitoring signals, they do
  • DC/DC Converters In Power Sequencing Systems
    , as well as, for different input voltage ranges within a family. The follow up design tip may provide some assistance to system engineers. Figure 1 shows the block diagram of a flyback converter with the bias circuitry for the control IC (PWM) and the feedback loop consistent of the error OPAM A1
  • Designing Power Supplies for Global Applications (.pdf)
    transistors-the two-transistor forward converter-can be used to provide low-cost, steady output voltages even when operating over a wide range of input voltages. (PWM) to provide high conversion efficiency. Such supplies are generally limited by the minimum pulse widths possible when using commercial PWM
  • DSPs: Smarter than your average chip
    , battery life can be extended from a few days to weeks or even months. DSP manufacturers are integrating more functions into the chip itself. Analog Devices' DashDSP family, for example, has common motor control peripherals, including Flash memory, integrated on a 28-pin IC. Such devices are being
  • Circuit Ideas: How to parallel regulator modules for high-current supplies
    It's often necessary to connect pointof- load (POL) dc/dc power supply modules in parallel to get a sufficiently high-current output for applications such as test instruments, blade servers, and so forth. Fully integrated POL power modules have a built-in inductor, power MOSFET, PWM controller

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