Asynchronous vs. synchronous topologies. How a synchronous boost LED controller minimizes efficiency losses. The challenge of low-input-voltage operation. High-power LEDs continue to proliferate in ...

Figure 1. Using a high-side current monitor (U2) to generate a proportional feedback voltage, this synchronous boost converter (U1) shifts automatically between its high-power and low-power modes of ...

Any boost-converter design will have a practical limit to how much it can step up a voltage from input to output. Pulse-width modulation (PWM) controllers have timing limits that restrict the minimum ...

The Kobe University-developed direct current voltage boost converter has much reduced electromagnetic noise and a high energy efficiency of over 91 percent, which is unprecedented for a MHz drive with ...