G1515 Datasheet PDF | Global Semiconductor





(PDF) G1515 Datasheet

Part Number G1515
Description ANALOG PWM IC
Manufacture Global Semiconductor
Total Page 10 Pages
PDF Download Download G1515 Datasheet PDF

Features: G1515 High Performance Current Mode PWM Controller ANALOG PWM IC 1. General D escription The G1515 is a high perform ance AC/DC power supply controller for adapter applications requirements up to 75WIt can meet less than 80 mW standby power. G1515 is a current mode PWM con troller ,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 s witching loss is minimized and the freq uency is adjusted internally. To ensure that power supplies work quietly, the frequency is set beyond 22 KHz. Small c urrent is needed when G1515 starts up a nd works, thus a large value resistor c ould be used in the startup circuit to minimize the standby power. Slope compe nsation circuit is integrated in G1515, which improves system large signal sta bility and reduces the possible sub-har monic oscillation at high PWM duty cycl e. Frequency shuffling technique is int egrated in G1515, which helps to achieve excellent EMI perfo.

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G1515 datasheet
G1515
High Performance Current Mode PWM Controller
ANALOG PWM IC
1. General Description
The G1515 is a high performance AC/DC power
supply controller for adapter applications
requirements up to 75WIt can meet less than 80
mW 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 compensation 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 complete protection functions
including cycle-by-cycle current limiting
protection(OCP), over load protection(OLP),VDD
over voltage protection(OVP), VDD over voltage
clamp and under voltage lockout(UVLO).
The G1515 is available in both SOT23-6 and
SOP8 package.
Features
Built-in Soft Start
Random Frequency Adjustment to
Reduce System EMI
Audio Noise Reduction
Short Circuit Protection
Internal Cable Compensation
Extended Burst Mode Control For
Improved Efficiency and Minimum
Standby Power Design
Internal Synchronized Slope
Compensation
Low VDD Startup Current and Low
Operating Current
Leading Edge Blanking on Current
Sense Input
Over Load Protection(OLP) and
Cycle-by-Cycle Current Limiting
Protection(OCP)
VDD Over Voltage
Protection(OVP),Under Voltage
Lockout Protection(UVLO) and Over
Voltage Clamp
Applications
Offline AC/DC flyback converter
Power Adapter
Set-Top Box Power Supplies
Open-frame SMPS
Auxiliary Power Supply for PC and
Server
Digital Cameras and Camcorder
Adapter
Global Semiconductor Co., LTD.
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