Multiple power transistors (or active regions) are paralleled, but one transistor has a lower threshold voltage. This reduces the voltage drop when the transistor is forward-biased. In an alternative embodiment, the power device with lower threshold voltage is simply connected as a depletion diode,...
In this paper, a new online junction temperature monitoring method is proposed for cascode GaN devices using the body diode of Si MOSFET. The reverse current during soft-switching mode is utilized to extract the voltage drop of the Si MOSFET's body diode. It is pointed out that, to accurate...
Also, this approach may fail to work at all with higher voltage MOSFETs, where the voltage drop across the channel can easily exceed that of the diode when conducting in the reverse direction. Unfortunately, it is not always an option to use a MOSFET with a fast intrinsic body diode. The...
Body diode detection is challenging due to phase node variability mainly effected by the voltage drop when the FET is in the on state and the natural oscillation caused by immediate turn off of the FET. In an attempt to reduce dead time, premature detection causes a false detection and late...
The FD technology device has a lower Qrr than the standard device; meaning that when the diode is reverse biased by the drop voltage on the channel MOSFET, very low in low load condition, it will be faster to complete the recovery and so w...
On the other hand, connecting the gate to the drain ("diode-connected" in the EE jargon) makes for an active diode with a forward drop comparable to the gate threshold voltage, maybe 2V more or less. A diode connected MOSFET has a very, very soft clipping knee that squashes the ...
lSD waveform Reverse recovery current Body diode forward current dI/dt D.U.T. VDS waveform Diode recovery dV/dt Re-applied voltage Body diode forward drop Inductor current VDD Ripple ≤ 5 % ISD Note a. VGS = 5 V for logic level devices Fig. 19 - For N-Channel ...
crease,higher output voltage than the conventional charge pump can be obtained in the proposed charge pump.With two auxiliary MOSFET’s used to update the body voltage,the proposed charge pump shows compatible performance of the ideal diode charge pump.Index Terms—Auxiliary MOSFET,body effect,charge...
A body-bias voltage controller includes: a plurality of transistors at least one of which is supplied with a body-bias voltage; a monitor circuit to detect voltage characteristics of the plurality of
lSD waveform Reverse recovery current Body diode forward current dI/dt D.U.T. VDS waveform Diode recovery dV/dt Re-applied voltage Body diode forward drop Inductor current VDD Ripple ≤ 5 % ISD Note a. VGS = 5 V for logic level devices Fig. 19 - For N-Channel ...