FAN6862HR − Highly Integrated Green-Mode PWM Controller

A highly integrated PWM controller, FAN6862H(HR) provides several features to enhance the performance of flyback converters. To minimize standby power consumption, a proprietary Green-Mode function provides off-time modulation to continuously decrease the switching frequency under light-load conditions. Under zero-load conditions, the power supply enters Burst Mode, which completely shuts off PWM output. Output restarts just before the supply voltage drops below the UVLO lower limit. This Green-Mode function enables power supplies to meet international power conservation requirements.     The FAN6862H(HR) is designed for SMPS and integrates frequency-hopping function internally, which helps reduce EMI emission of a power supply with minimum line filters. The built-in synchronized slope compensation is proprietary saw-tooth compensation for constant output power limit over universal AC input range. The gate output is clamped at 18V to protect the external MOSFET from over-voltage damage.     Other protection functions include VDD Over-Voltage Protection (OVP) and Over-Temperature Protection (OTP). For over-temperature protection, an external NTC thermistor can be applied to sense the ambient temperature. When VDD OVP or OTP is activated, an internal latch circuit latches off the controller.

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Product Status/Pricing/Packaging

Product Product & Eco Status *Pricing Packaging & Packing Info **Package Marking Convention Qualification Support Compliance Certificates
0 FAN6862HRTY Full Production
Green as of Apr 2010
$0.391 SSOT 6L Details TAPE REEL Line 1:&E (Space)
&E (Space)
&Y (Binary Calendar Year Coding)
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FIT :  1  
ESD (CDM) :  2000  V
ESD (HBM) :  4000  V
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Features

  • Low Startup Current: 8µA
  • Low Operating Current in Green Mode: 2mA
  • Peak-Current Mode Operation with Cycle-by-Cycle Current Limiting
  • PWM Frequency Continuously Decreasing with Burst Mode at Light Loads
  • VDD Over-Voltage Protection (OVP)
  • Constant Output Power Limit (Full AC Input Range)
  • Internal Latch Circuit (FAN6862H) for OVP, OTP
  • Fixed PWM Frequency (100KHz) with Frequency Hopping
  • Feedback Open-Loop Protection with 56ms Delay
  • Soft Startup Time: 5ms

Applications

  • Notebook PC
  • Wireless LAN Access Point/Router
  • External AC-DC Merchant Power Supply - Wireless Communications
  • DVD
  • STB

Reference Designs

Application Document Number Featured Products Output
Power
Input
Voltage
Topology
Netbook Adapter RD-337 FAN6862, FAN6862H, FAN6862HR, FAN6862L, FAN6862R 40W 90-265VAC Flyback Converter


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