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FAN103 の電気的特性と機能

FAN103のメーカーはFairchild Semiconductorです、この部品の機能は「Primary-Side-Regulation PWM Controller」です。


製品の詳細 ( Datasheet PDF )

部品番号 FAN103
部品説明 Primary-Side-Regulation PWM Controller
メーカ Fairchild Semiconductor
ロゴ Fairchild Semiconductor ロゴ 




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FAN103 Datasheet, FAN103 PDF,ピン配置, 機能
October 2009
FAN103
Primary-Side-Regulation PWM Controller
Features
ƒ Low Standby Power Under 30mW
ƒ High Voltage Startup
ƒ Fewest External Component Counts
ƒ Constant-Voltage (CV) and Constant-Current (CC)
Control without Secondary-Feedback Circuitry
ƒ Green-Mode Function: Linearly-Decreasing PWM
Frequency
ƒ Fixed PWM Frequency at 50kHz with Frequency
Hopping to Solve EMI Problem
ƒ Cable Compensation in CV Mode
ƒ Peak-Current-Mode Control in CV Mode
ƒ Cycle-by-Cycle Current Limiting
ƒ VDD Over-Voltage Protection with Auto Restart
ƒ VDD Under-Voltage Lockout (UVLO)
ƒ Gate Output Maximum Voltage Clamped at 15V
ƒ Fixed Over-Temperature Protection with
Auto Restart
ƒ Available in the 8-Lead SOP Package
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Applications
ƒ Battery chargers for cellular phones, cordless
phones, PDA, digital cameras, power tools, etc.
ƒ Replaces linear transformer and RCC SMPS
Description
This third-generation Primary-Side-Regulation (PSR)
and highly integrated PWM controller provides several
features to enhance the performance of low-power
flyback converters. The proprietary topology,
TURECURRENT™, of FAN103 enables precise CC
regulation and simplified circuit for battery charger
applications. A low-cost, smaller and lighter charger
results as compared to a conventional design or a linear
transformer.
To minimize standby power consumption, the
proprietary green-mode function provides off-time
modulation to linearly decrease PWM frequency under
light-load conditions. This green mode assists the power
supply in meeting the power conservation requirement.
By using the FAN103, a charger can be implemented
with few external components and minimized cost. A
typical output CV/CC characteristic envelope is shown
in Figure 1.
VO
Maximum
Minimum
Before Cable Compensation
After Cable Compensation
IO
Figure 1. Typical Output V-I Characteristic
Ordering Information
Part Number
FAN103MY
Operating
Temperature Range
-40°C to +105°C
Eco
Status
Package
Packing Method
Green 8-Lead, Small Outline Package (SOP-8) Tape & Reel
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html
© 2009 Fairchild Semiconductor Corporation
FAN103 • Rev. 1.0.1
www.fairchildsemi.com

1 Page





FAN103 pdf, ピン配列
Marking Information
Pin Configuration
F: Fairchild Logo
Z: Plant Code
X: 1-Digit Year Code
Y: 1-Digit Week Code
TT: 2-Digit Die Run Code
T: Package Type (M=SOP)
Y: Green Package
M: Manufacture Flow Code
Figure 4. Top Mark
Figure 5. Pin Configuration
Pin Definitions
Pin # Name
1 CS
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2 GATE
3 VDD
4 COMR
5 VS
6 GND
7 NC
8 HV
Description
Current Sense. This pin connects a current sense resistor, to detect the MOSFET current for
peak-current-mode control in CV mode, and provides the output-current regulation in CC mode.
PWM Signal Output. This pin uses the internal totem-pole output driver to drive the power
MOSFET. It is internally clamped below 15V.
Power Supply. IC operating current and MOSFET driving current are supplied using this pin.
This pin is connected to an external VDD capacitor of typically 10µF. The threshold voltages for
startup and turn-off are 16V and 5V, respectively. The operating current is lower than 5mA.
Cable Compensation. This pin connects a capacitance between the COMR and GND pins for
compensation voltage drop due to output cable loss in CV mode.
Voltage Sense. This pin detects the output voltage information and discharge time based on
voltage of auxiliary winding.
Ground
No Connect
High Voltage. This pin connects to bulk capacitor for high-voltage startup.
© 2009 Fairchild Semiconductor Corporation
FAN103 • Rev. 1.0.1
3
www.fairchildsemi.com


3Pages


FAN103 電子部品, 半導体
Electrical Characteristics (Continued)
Unless otherwise specified, VDD=15V and TA=25°C.
Symbol
Parameter
Conditions
Min. Typ. Max. Units
Current-Error-Amplifier Section
VIR Reference Voltage
Cable Compensation Section
VCOMR COMR Pin for Cable Compensation
Gate Section
DCYMAX Maximum Duty Cycle
VOL Output Voltage Low
VOH Output Voltage High
tr Rising Time
tf Falling Time
VCLAMP Output Clamp Voltage
2.475 2.500
0.85
VDD=20V, Gate Sinks 10mA
VDD=8V, Gate Sources 1mA
CL=1nF
CL=1nF
VDD=25V
70
5
75
200
60
15
2.525
80
1.5
250
100
18
V
V
%
V
V
ns
ns
V
Over-Temperature-Protection Section
TOTP Threshold Temperature for OTP(3)
+140
°C
Note:
3. When the over-temperature protection is activated, the power system enters latch mode and output is disabled.
www.DataSheet4U.com
© 2009 Fairchild Semiconductor Corporation
FAN103 • Rev. 1.0.1
6
www.fairchildsemi.com

6 Page



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