900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Fairchild Semiconductor Electronic Components Datasheet

FAN6300 Datasheet

Highly Integrated Quasi-Resonant Current Mode PWM Controller

No Preview Available !

June 2008
FAN6300
Highly Integrated Quasi-Resonant Current Mode
PWM Controller
Features
ƒ High-Voltage Startup
ƒ Quasi-Resonant Operation
ƒ Cycle-by-Cycle Current Limiting
ƒ Peak-Current-Mode Control
ƒ Leading-Edge Blanking
ƒ Internal Minimum tOFF
ƒ Internal 2ms Soft-Start
ƒ Over-Power Compensation
ƒ GATE Output Maximum Voltage
ƒ Auto-Recovery Short-Circuit Protection (FB Pin)
ƒ Auto-Recovery Open-Loop Protection (FB Pin)
ƒ VDD Pin & Output Voltage (DET Pin) OVP Latched
Applications
ƒ AC/DC NB Adapters
ƒ Open-Frame SMPS
www.DataSheet4U.com
Description
The highly integrated FAN6300 PWM controller
provides several features to enhance the performance
of flyback converters. A built-in HV startup circuit can
provide more startup current to reduce the startup time
of the controller. Once the VDD voltage exceeds the
turn-on threshold voltage, the HV startup function is
disabled immediately to improve power consumption.
An internal valley voltage detector ensures the power
system operates at Quasi-Resonant operation in wide-
range line voltage and any load conditions and reduces
switching loss to minimize switching voltage on drain of
power MOSFET.
To minimize standby power consumption and light-load
efficiency, a proprietary green-mode function provides
off-time modulation to decrease switching frequency
and perform extended valley voltage switching to keep
to a minimum switching voltage.
FAN6300 controller also provides many protection
functions. Pulse-by-pulse current limiting ensures the
fixed peak current limit level, even when a short circuit
occurs. Once an open-circuit failure occurs in the
feedback loop, the internal protection circuit disables
PWM output immediately. As long as VDD drops below
the turn-off threshold voltage, controller also disables
PWM output. The gate output is clamped at 18V to
protect the power MOS from high gate-source voltage
conditions. The minimum tOFF time limit prevents the
system frequency from being too high. If the DET pin
reaches OVP, internal OTP is triggered, and the power
system enters latch-mode until AC power is removed.
FAN6300 controller is available in both 8-pin DIP and
SOP packages.
Ordering Information
Part
Number
FAN6300DZ
FAN6300SZ
Operating
Temperature Range
-40 to +105°C
-40 to +105°C
Eco Status
RoHS
RoHS
Package
Packing
Method
8-Lead, Dual Inline Package (DIP)
Tube
8-Lead, Small Outline Package (SOP) Reel & Tape
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2007 Fairchild Semiconductor Corporation
FAN6300 • Rev. 1.0.1
www.fairchildsemi.com


Fairchild Semiconductor Electronic Components Datasheet

FAN6300 Datasheet

Highly Integrated Quasi-Resonant Current Mode PWM Controller

No Preview Available !

Application Diagram
Figure 1. Typical Application
Internal Block Diagram
FB 2
www.DataSheet4U.com
Soft-Start
2ms
4.2V
2R
R
HV VDD
86
IHV
OVP
Two Steps
UVLO
27V Latched 16V/10V/8V
500µs
30µs
Timer
55ms
Starter
FB OLP
CS 3
Blanking
Circuit
Over-Power
Compensation
PWM
Current Limit
IDET
DET
tOFF
Blanking
(4µs)
1
5V
tOFF-MIN
(8µs/38µs)
S/H
IDET
0.3V
VDET
VDET
2.5V
DET OVP
Valley
Detector
Latched
1st
Valley
tOFF-MIN
+9µs
0.3V
Internal
OTP
Latched
Latched
4
GND
7
NC
Figure 2. Functional Block Diagram
© 2007 Fairchild Semiconductor Corporation
FAN6300 • Rev. 1.0.1
2
Internal
Bias
S SET Q
R CLR Q
DRV
18V
5 GATE
www.fairchildsemi.com


Part Number FAN6300
Description Highly Integrated Quasi-Resonant Current Mode PWM Controller
Maker Fairchild Semiconductor
Total Page 14 Pages
PDF Download

FAN6300 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 FAN6300 Highly Integrated Quasi-Resonant Current Mode PWM Controller
Fairchild Semiconductor
2 FAN6300A Highly Integrated Quasi-Resonant Current Mode PWM Controller
Fairchild Semiconductor
3 FAN6300H Highly Integrated Quasi-Resonant Current Mode PWM Controller
Fairchild Semiconductor





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy