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PWM Controller. FAN102 Datasheet

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PWM Controller. FAN102 Datasheet
















FAN102 Controller. Datasheet pdf. Equivalent













Part

FAN102

Description

Primary-Side-Control PWM Controller



Feature


FAN102 — Primary-Side-Control PWM Cont roller August 2008 FAN102 Primary-Sid e-Control PWM Controller Features ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ Const ant-Voltage (CV) and Constant-Current ( CC) Control without Secondary-Feedback Circuitry Green Mode: PWM Frequency Lin early Decreasing Fixed PWM Frequency at 42kHz with Frequency Hopping to Solve EMI Problem Cable Compensation in.
Manufacture

Fairchild Semiconductor

Datasheet
Download FAN102 Datasheet


Fairchild Semiconductor FAN102

FAN102; CV Mode Low Startup Current: 10μA Low Operating Current: 3.5mA Peak-Current-M ode Control in CV Mode Cycle-by-Cycle C urrent Limiting VDD Over-Voltage Protec tion with Auto-Restart VDD Under-Voltag e Lockout (UVLO) Gate Output Maximum Vo ltage Clamped at 18V Fixed Over-tempera ture Protection with Latch SOP-8 Packag e Available Description This highly in tegrated PWM contro.


Fairchild Semiconductor FAN102

ller, FAN102, provides several features to enhance the performance of low-power flyback converters. The proprietary to pology enables simplified circuit desig n for battery charger applications. A l ow-cost, smaller and lighter charger re sults when compared to a conventional d esign or a linear transformer. The star tup current is only 10µA, which allows use of large start.


Fairchild Semiconductor FAN102

up resistance for further power saving. To minimize the standby power consumpti on, the proprietary green-mode function provides off-time modulation to linear ly decrease PWM frequency under light-l oad conditions. This green-mode functio n assists the power supply in meeting t he power conservation requirements. Usi ng FAN102, a charger can be implemented with fewer extern.





Part

FAN102

Description

Primary-Side-Control PWM Controller



Feature


FAN102 — Primary-Side-Control PWM Cont roller August 2008 FAN102 Primary-Sid e-Control PWM Controller Features ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ Const ant-Voltage (CV) and Constant-Current ( CC) Control without Secondary-Feedback Circuitry Green Mode: PWM Frequency Lin early Decreasing Fixed PWM Frequency at 42kHz with Frequency Hopping to Solve EMI Problem Cable Compensation in.
Manufacture

Fairchild Semiconductor

Datasheet
Download FAN102 Datasheet




 FAN102
August 2008
FAN102
Primary-Side-Control PWM Controller
Features
ƒ Constant-Voltage (CV) and Constant-Current (CC)
Control without Secondary-Feedback Circuitry
ƒ Green Mode: PWM Frequency Linearly Decreasing
ƒ Fixed PWM Frequency at 42kHz with Frequency
Hopping to Solve EMI Problem
ƒ Cable Compensation in CV Mode
ƒ Low Startup Current: 10μA
ƒ Low Operating Current: 3.5mA
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 18V
ƒ Fixed Over-temperature Protection with Latch
ƒ SOP-8 Package Available
www.DataShAeept4pUl.iccomations
ƒ Battery chargers for cellular phones, cordless
phones, PDA, digital cameras, power tools
ƒ Replaces linear transformer and RCC SMPS
Description
This highly integrated PWM controller, FAN102,
provides several features to enhance the performance
of low-power flyback converters. The proprietary
topology enables simplified circuit design for battery
charger applications. A low-cost, smaller and lighter
charger results when compared to a conventional
design or a linear transformer. The startup current is
only 10µA, which allows use of large startup resistance
for further power saving.
To minimize the standby power consumption, the
proprietary green-mode function provides off-time
modulation to linearly decrease PWM frequency under
light-load conditions. This green-mode function assists
the power supply in meeting the power conservation
requirements.
Using FAN102, a charger can be implemented with
fewer external components and minimized cost. A
typical output CV/CC characteristic envelope is shown
in Figure 1.
FAN102 controller is available in 8-pin SOP package.
Figure 1. Typical Output V-I Characteristic
Ordering Information
Part Number
Operating
Temperature Range
FAN102MY
-40°C to +105°C
Eco Status
Green
Package
8-Lead, Small Outline
Package (SOP-8)
Packing Method
Tape & Reel
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2008 Fairchild Semiconductor Corporation
FAN102 Rev. 1.0.1
www.fairchildsemi.com




 FAN102
Application Diagram
Internal Block Diagram
Figure 2. Typical Application
www.DataSheet4U.com
VDD
VIsPaKh
Vsah
© 2008 Fairchild Semiconductor Corporation
FAN102 Rev. 1.0.1
Figure 3. Functional Block Diagram
2
Brownout
Protection
www.fairchildsemi.com




 FAN102
Marking Information
DZXXYYTTTT
FAN102
TPM
F- Fairchild logo
Z- Plant code
X- 1 digit year code
Y- 1 digit week code
TT: 2 digits die run code
T: Package type (M=SOP)
P: Z: Pb free, Y: Green package
M: Manufacture flow code
Pin Configuration
Figure 4. Top Mark
CS
COMR
COMI
COMV
GATE
VDD
GND
VS
Figure 5. Pin Configuration
Pin Definitions
Pin # Name
www.DataShee1t4U.com CS
2 COMR
3 COMI
4 COMV
5 VS
6 GND
7 VDD
8 GATE
Description
Analog input, current sense. Connected to a current-sense resistor for peak-current-mode
control in CV mode. The current-sense signal is also provided for output-current regulation in
CC mode.
Analog output, cable compensation. Connect a resistor between COMR and GND for cable loss
compensation in CV mode.
Analog output, current compensation. Output of the current error amplifier. Connect a capacitor
between COMI pin and GND for frequency compensation.
Analog output, voltage compensation. Output of the voltage error amplifier. Connect a capacitor
between the COMV pin and GND for frequency compensation.
Analog input, voltage sense. Output-voltage-sense input for output-voltage regulation.
Voltage reference, ground.
Supply, power supply.
Driver output. The totem-pole output driver to drive the power MOSFET.
© 2008 Fairchild Semiconductor Corporation
FAN102 Rev. 1.0.1
3
www.fairchildsemi.com




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