FAN102: Primary-Side-Regulation PWM Controller
Description: The primary-side PWM controller significantly simp...
The primary-side PWM controller significantly simplifies power supply design that requires CV and CC regulation capabilities. The FAN102 controls the output voltage and current precisely with the information in the primary side of the power supply, not only removing the output current sensing loss, but eliminating all secondary feedback circuitry.
The green-mode function with a low startup current (10µA) maximizes the light-load efficiency so the power supply can meet stringent standby power regulations.
Compared with a conventional secondary-side regulation approach, the FAN102 can reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability.
Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary-Feedback Circuitry
Green Mode: Frequency Reduction at Light Load
Fixed PWM Frequency at 42kHz with Frequency Hopping to Solve EMI Problem
Cable Voltage Drop Compensation in CV Mode
Low Startup Current: 10µA
Low Operating Current: 3.5mA
Peak-Current-Mode Control in CV Mode
Cycle-by-Cycle Current Limiting
VDD Over-Voltage Protection with Auto-Restart
VDD Under-Voltage Lockout (UVLO)
Gate Output Maximum Voltage Clamped at 18V
Fixed Over-temperature Protection with Auto Restart
SOP-8 Package Available
Technical Documentation & Design Resources
Availability and Samples
Compliance: Pb-free Halide free
Description: Primary-Side-Regulation PWM Controller
Package Type: SOIC-8
Package Case Outline: 751EB
Container Type: REEL
Container Qty: 2500
VCC Min (V):
VCC Max (V):
fSW Typ (kHz):