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G1555

Global Semiconductor
Part Number G1555
Manufacturer Global Semiconductor
Description ANALOG PWM
Published Apr 14, 2019
Detailed Description G1555 High Performance Current Mode PWM Switch ANALOG PWM IC 1.0 General Description The G1555 is a high performance ...
Datasheet PDF File G1555 PDF File

G1555
G1555

Overview
G1555 High Performance Current Mode PWM Switch ANALOG PWM IC 1.
0 General Description The G1555 is a high performance AC/DC power supply Switch for battery charger and adapter applications requirements up to 28W in an open frame design.
It can meet less than 80 mW standby power.
G1555 is a current mode PWM Switch with a high voltage power MOSFET.
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 20 KHz.
Small current is needed when G1555 starts up and works, thus a large value resistor could be used in the startup circuit to minimize the standby power.
Slope compensation circuit is integrated in G1555, which improves system large signal stability and reduces the possible sub-harmonic oscillation at high PWM duty cycle.
Frequency shuffling technique is...


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