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PDF FS6824PG Data sheet ( Hoja de datos )
| Número de pieza | FS6824PG | |
| Descripción | AC-DC Controllers | |
| Fabricantes | American First Semiconductor | |
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AC-DC Controllers
FS6824PG
General Description
FS6824PG is a current mode PWM controller with integrated high voltage power MOSFET. It could be used in
sub 21W(Note 1) applications.
In PWM mode, FS6824PG operates in fixed frequency which is precisely set internally.FS6824PG 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 in Extended
Burst Mode. Small current is needed when FS6824PG 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 FS6824PG, which
improves system large signal stability and reduces the possible sub-harmonic oscillation at high PWM duty cycle.
Leading-edge blanking on current sense (CS) input eliminates the signal glitch due to snubber circuit diode
reverse recovery current. Frequency jittering technique is integrated in FS6824PG, which helps to achieve excellent
EMI performance.
FS6824PG 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).FS6824PG is available in Pb-free DIP8 package.
Applications
Battery Charger
Power Adaptor for PDA and Digital Camera
Set-Top Box Power Supplies
Open-frame SMPS
Features
Optimized for Sub 21W Applications(Note 1)
650V Power MOSFET is Integrated
4mSec Soft Start
Frequency Jittering for Improved EMI
Extended Burst Mode for Improved Efficiency and Low Standby Power
Audio Noise Free Operation
Fixed 50KHz Switching Frequency in PWM Mode
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
Pb-free DIP8 Package
@ 2010 Copyright By American First Semiconductor
Page 1/9
1 page  
FS6824PG
Electrical Characteristics
TA=25℃,VDD=16V, unless otherwise noted.
Symbol
Description
Test Conditions
IDD_ST
IOP
VDD_ST
VUVLO
VOVP
VDD_CLAMP
VFB_OPEN
VDD Startup Current
Operating Current
VDD Turn-On Threshold
Level
VDD Under Voltage
Lockout
VDD Over Voltage
Protection
VDD Voltage Clamp
FB Open Loop Voltage
IFB_SHORT FB Short Circuit Current
VTH_0D
TLEB
ZSENSE_IN
VTH_OC
Zero Duty Cycle FB
Threshold Voltage
Leading Edge Blanking
Time
SENSE Input Impedance
Internal Current Limiting
Threshold Voltage
TD_OC
FOSC
DMAX
FBURST
ΔFOSC
RDS(ON)
Over Current Detection
and Control Delay
Oscillation Frequency
Maximum Duty Cycle
Burst Mode Frequency
Frequency Modulation
Range/Base Range
Static Drain-Source
On-Resistance
VDD=14.5V
VDD=16V ,VFB=3V,VCS=0V
VDD Going Up
VDD Going Down
IDD=10mA
VDD=16V
VDD=16V，Short FB to GND
and Measure the Current
VDD=16V,VCS=0V,FB Going
Down until the Power
MOSFET Turn Off
VDD=16V,VFB=3V,Voltage on
CS Pin Going Up until the
Power MOSFET Turn Off
From Over Current Occurs till
the Gate Driver Starts to Turn
Off
VDD=16V ,VFB=3V,VCS=0V
VDD=16V ,VFB=3.3V,VCS=0V
MIN
15.0
8.7
26.8
5.4
0.72
45
70
-4
Value
TYP
5
1.6
MAX
20
16.0 17.0
9.7 10.7
28.3 29.8
30.5
5.7 6.0
1.45
1.28
270
40
0.77 0.82
120
50 55
80 90
22
4
8.5
Units
uA
mA
V
V
V
V
V
mA
V
nS
KΩ
V
nS
KHz
%
KHz
%
Ω
www.First-semi.com
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5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet FS6824PG.PDF ] | |
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