FAN103: Primary-Side-Regulation PWM Controller
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, TRUECURRENT®, 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.
Features
- Low Standby Power Under 30mW
- High-Voltage Startup
- Fewest External Component Counts
- Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary-Feedback Circuitry
- Green-Mode Function: Linearly-Decreasing PWM Frequency
- Fixed PWM Frequency at 50kHz with Frequency Hopping to Solve EMI Problem
- Cable Compensation in CV Mode
- Peak-Current-Mode Control in CV Mode
- Cycle-by-Cycle Current Limiting
- VDD Over-Voltage Protection with Auto Restart
- VDDUnder-Voltage Lockout (UVLO)
- Gate Output Maximum Voltage Clamped at 15V
- Fixed Over-Temperature Protection with Auto Restart
- Available in the 8-Lead SOP Package
Ordering CodeProduct | Product & Eco Status | Unit Price/1K Order | Packing Method Convention | Package Marking Convention* |
---|
FAN103MY | Full Production
Green as of Aug 2008
China RoHS
Restrictions apply. Not to be shipped into the U.S.A. | $0.4788 | SO 8L NB
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1.75 x 3.9 x 4.9mm,
TAPE REEL | Line 1$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K
Line 2FAN103
Line 3MYA
|
FAN103MY | 0.7 | 0.6 | 55 | 150 |
Application Notes
AN-8033 Design Guideline for Primary Side Regulated (PSR) Flyback Converter Using FAN103 and FSEZ13X7 Last Update : 28-Jun-2014