Controllers | FAN6862

6Pin Green-Mode PWM Controller for Flyback Converter, 65KHz

Obsolete

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Overview

A highly integrated PWM controller, FAN6862 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 FAN6862 is designed for SMPS and integrates a frequency-hopping function that helps reduce EMI emission of a power supply with minimum line filters. The built-in synchronized slope compensation is proprietary sawtooth 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 and over-temperature protection. 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.

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

  • Low Startup Current: 8µA
  • Low Operating Current in Green Mode: 3mA
  • 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 for OVP, OTP
  • Fixed PWM Frequency (65KHz) with Frequency Hopping
  • Feedback Open-Loop Protection with 56ms Delay
  • Soft-Start Time: 4ms
  • 400mA Driving Capability

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FAN6862TY

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Obsolete

CAD Model

Pb

A

H

P

TSOT-23-6

419BL

1

260

REEL

3000

N

-

-

-

15

17

-

Price N/A

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Reliability Data

Die Related Summary Data

Device: FAN6862TY

Equivalent to wafer fab process: CN

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

CN

6

425600109

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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