FAN6602R: 6Pin Green-Mode PWM Controller for Flyback Converter, 65KHz
●A highly integrated PWM controller, FAN6602R provides several features to enhance the performance of flyback converters. Tominimize standby power consumption, a proprietary Green Mode provides off-time modulation to continuously decrease theswitching frequency under light-load conditions. Under zero-load conditions, the power supply enters Burst Mode, which completelyshuts off PWM output. Output restarts just before the supply voltage drops below the Under-Voltage Lockout (UVLO) lower limit.Green Mode enables power supplies to meet international power conservation requirements.The FAN6602R is designed for SMPSand integrates a frequency-hopping function that helps to reduce EMI emission of a power supply with minimum line filters. Tocompensate the power limit variation over universal input range, a current limit (VLIMIT) adaptively keeps the power limitsubstantially constant. The gate output is clamped at 13.5 V to protect the external MOSFET from over-voltage damage.Otherprotection functions include VDD Over-Voltage Protection (OVP), and Over-Temperature Protection (OTP). For OTP, an externalNTC thermistor can be applied to sense the ambient temperature.
●Features
■Low Startup Current: 8 μA
■Low Standby Power: Under 0.1 W
■Low Operating Current in Green Mode: 600 μA
■PWM Frequency Continuously Decreasing with Cycle Skipping and Burst Mode at Light Loads
■Fixed PWM Frequency (65 kHz) with Frequency Hopping
■Full Range Frequency Hopping
■Peak-Current Mode Operation with Cycle-by-Cycle Current Limiting
■Constant Output Power Limit (Full AC Input Range)
■VDD Over-Voltage Protection (OVP)
■Feedback Open-Loop Protection: 60 ms Delay
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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12/6/2017 |
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159 KB |
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