This paper proposed three reverse voltage protection circuits for the power MOSFETs in low dropout applications. Power devices are vulnerable to instantaneous current overshoot when input is lower than output voltage. Compared with conventional solutions using diode block, structures consume fewer drop during normal operation. The first design suitable applications wide ranges but requires larg...

The explosive proliferation of battery powered equipment in the past decade has created unique requirements for a voltage regulator that cannot be met by the industry standards like the LM340 or the LM317. These regulators use an NPN Darlington pass transistor (Figure 1), and will be referred to in this document as NPN regulators. The demand for higher performance is being met by the newer low-...

The explosive proliferation of battery powered equipment in the past decade has created unique requirements for a voltage regulator that cannot be met by the industry standards like the LM340 or the LM317. These regulators use an NPN Darlington pass transistor (Figure 1), and will be referred to in this document as NPN regulators. The demand for higher performance is being met by the newer low-...

This paper presents a high reliability low dropout linear regulator with voltage tolerance, which uses an open loop structure and is applied to the feedforward response portion of power tube gate enhance transient LDO. The proposed LDO simulated using 0.18um DTI isolated BCD process 3.3V-14V supply voltage, maximum input 40V adjustable output 3.1V/5V. line regulation 0.086% at rejection ratio c...

Linear-assisted DC/DC converters are structures that allow to take advantages of the two classic alternatives in the design of power supply systems: Voltage linear regulators (classic NPN topology or LDO –low dropout–) and switching DC/DC converters. This paper shows the proposal of a modified currentmode one-cycle control for linear-assisted DC/DC converters. The modified current-mode one-cycl...

Low-dropout regulators (LDOs) are widely distributed in SoC designs to supply individual voltage domains, and a digital LDO (DLDO) is favorable for its lowvoltage operation and process scalability. However, as many SoCs generate a load current (ILOAD) variation at sub-A/ns level, voltage regulators require a large areaconsuming output capacitor (COUT) to maintain the output voltage (VOUT) durin...

A CMOS voltage reference, which is based on the weighted difference of the gate–source voltages of an NMOST and a PMOST operating in saturation region, is presented. The voltage reference is designed for CMOS low-dropout linear regulators and has been implemented in a standard 0.6m CMOS technology ( 0 9 V at 0 C). The occupied chip area is 0.055 mm. The minimum supply voltage is 1.4 V, and the ...