G1515
Description
The G1515 is a high performance AC/DC power supply controller for adapter applications requirements up to 75W。It can meet less than 80 m W standby power. G1515 is a current mode PWM controller ,It operates in fixed frequency which is precisely set internally. It could operate in Extended Burst Mode at no load or light load, in which mode switching loss is minimized and the frequency is adjusted internally. To ensure that power supplies work quietly, the frequency is set beyond 22 KHz.
Small current is needed when G1515 starts up and works, thus a large value resistor could be used in the startup circuit to minimize the standby power. Slope pensation circuit is integrated in G1515, which improves system large signal stability and reduces the possible sub-harmonic oscillation at high PWM duty cycle.
Frequency shuffling technique is integrated in G1515, which helps to achieve excellent EMI performance.
G1515 offers plete protection functions including cycle-by-cycle current...
