G1513 Datasheet: ANALOG PWM IC





G1513 ANALOG PWM IC Datasheet

Part Number G1513
Description ANALOG PWM IC
Manufacture Global Semiconductor
Total Page 3 Pages
PDF Download Download G1513 Datasheet PDF

Features: G1513 High Performance Current Mode PWM Controller ANALOG PWM IC 1.0 General Description The G1513 is a high perfor mance AC/DC power supply controller for battery charger and adapter applicatio ns requirements up to 40W.It can meet l ess than 80 mW standby power. G1513 is a current mode PWM controller ,It opera tes in fixed frequency which is precise ly 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 suppl ies work quietly, the frequency is set beyond 22 KHz. Small current is needed when G1513 starts up and works, thus a large value resistor could be used in t he startup circuit to minimize the stan dby power. Slope compensation circuit i s integrated in G1513, which improves s ystem large signal stability and reduce s the possible sub-harmonic oscillation at high PWM duty cycle. Frequency shuf fling technique is integrated in G1513, which helps to achieve .

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G1513
High Performance Current Mode PWM Controller
ANALOG PWM IC
1.0 General Description
The G1513 is a high performance AC/DC power
supply controller for battery charger and adapter
applications requirements up to 40W.It can meet
less than 80 mW standby power.
G1513 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 G1513 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 G1513, which improves system large signal
stability and reduces the possible sub-harmonic
oscillation at high PWM duty cycle.
Frequency shuffling technique is integrated in
G1513, which helps to achieve excellent EMI
performance.
G1513 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 G1513 is available in SOT23-6 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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