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PWM Controller. FAN103 Datasheet

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PWM Controller. FAN103 Datasheet
















FAN103 Controller. Datasheet pdf. Equivalent













Part

FAN103

Description

Primary-Side-Regulation PWM Controller



Feature


FAN103 — Primary-Side-Regulation PWM C ontroller October 2009 FAN103 Primary -Side-Regulation PWM Controller Feature s ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ Low Standby Power Under 30mW High Voltage Startup Fewest External Compone nt Counts Constant-Voltage (CV) and Con stant-Current (CC) Control without Seco ndary-Feedback Circuitry Green-Mode Fun ction: Linearly-Decreasing PWM Fre.
Manufacture

Fairchild Semiconductor

Datasheet
Download FAN103 Datasheet


Fairchild Semiconductor FAN103

FAN103; quency Fixed PWM Frequency at 50kHz with Frequency Hopping to Solve EMI Problem Cable Compensation in CV Mode Peak-Cur rent-Mode Control in CV Mode Cycle-by-C ycle Current Limiting VDD Over-Voltage Protection with Auto Restart VDD Under- Voltage Lockout (UVLO) Gate Output Maxi mum Voltage Clamped at 15V Fixed Over-T emperature Protection with Auto Restart Available in the .


Fairchild Semiconductor FAN103

8-Lead SOP Package Description This thi rd-generation Primary-Side-Regulation ( PSR) and highly integrated PWM controll er provides several features to enhance the performance of low-power flyback c onverters. The proprietary topology, TU RECURRENT™, of FAN103 enables precise CC regulation and simplified circuit f or battery charger applications. A low- cost, smaller and li.


Fairchild Semiconductor FAN103

ghter charger results as compared to a c onventional design or a linear transfor mer. To minimize standby power consumpt ion, the proprietary green-mode functio n provides off-time modulation to linea rly decrease PWM frequency under light- load conditions. This green mode assist s the power supply in meeting the power conservation requirement. By using the FAN103, a charger.





Part

FAN103

Description

Primary-Side-Regulation PWM Controller



Feature


FAN103 — Primary-Side-Regulation PWM C ontroller October 2009 FAN103 Primary -Side-Regulation PWM Controller Feature s ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ Low Standby Power Under 30mW High Voltage Startup Fewest External Compone nt Counts Constant-Voltage (CV) and Con stant-Current (CC) Control without Seco ndary-Feedback Circuitry Green-Mode Fun ction: Linearly-Decreasing PWM Fre.
Manufacture

Fairchild Semiconductor

Datasheet
Download FAN103 Datasheet




 FAN103
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




 FAN103
Application Diagram
D1
RF
AC
Input
D2
L1
D4
C1 C2
D3
Internal Block Diagram
Rsn2
Csn
Dsn
Rsn1
DFa
CVDD
R1
CVS R2
Rsn Csn2
T1
DF
DC
CO1 CO2 Rd Output
3 VDD
7 N.C
8 HV
6 GND
VS 5
GATE 2
CS 1
COMR 4
RGATE
Rcs
CCR
MOSFET
RSENSE
Figure 2. Typical Application
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© 2009 Fairchild Semiconductor Corporation
FAN103 • Rev. 1.0.1
Figure 3. Functional Block Diagram
2
www.fairchildsemi.com




 FAN103
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




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