The system regulates LED current by sensing the voltage across sense resistor R1 and using it as feedback to the control circuit. For this direct feedback to work properly, you must reference the ...

The first thing I ever built without a kit was a 5 V regulated power supply using the old LM309K. That’s a classic linear regulator like a 7805. While they are simple, they wast ...

The buck converter is the most common power supply topology and power engineers are well versed in its strengths and weakness. One of the challenges in any power system design is the current sensing.

In the last installment of Circuit VR, we walked around a simplified buck converter. The main simplification was using a constant PWM signal. The result is that the output voltage is a fixed fracti… ...

This circuit demonstrates the use of an AD7740 synchronous VFC for low-side current measurements. In Figure 1, the current flow both into and out of a rechargeable battery is being monitored.

Figure 5 In this inverting buck-boost voltage-mode converter, a common sense-resistor location is in series with the output inductor (a). The sensed-current wavefore (b) is not beautiful but has no ...

Fig. 1, on page 60, shows a buck converter with the inductor current sensing circuit, where L is the inductance and R L is the inductor's dc resistance.

The LTC7150S is a 20V, 20A monolithic synchronous buck converter with differential VOUT remote sensing. The device’s phase lockable controlled on-time constant frequency current mode architecture ...

Called LTC7821, this is “industry first hybrid step-down synchronous controller that merges a switched capacitor circuit with a synchronous step-down controller, enabling up to a 50% reduction in ...