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Products » FAN6300H Highly Integrated Quasi-Resonant Current Mode PWM Controller

FAN6300H − Highly Integrated Quasi-Resonant Current Mode PWM Controller

The highly integrated FAN6300A/H of PWM controller provides several features to enhance the performance of flyback converters. FAN6300A is applied on quasiresonant flyback converters where maximum operating frequency is below 100kHz. FAN6300H is suitable for high-frequency operation (up to 190kHz). A built-in HV startup circuit can provide more startup current to reduce the startup time of the controller. Once the V_DD voltage exceeds the turn-on threshold voltage, the HV startup function is disabled immediately to reduce power consumption. An internal valley voltage detector ensures power system operates at quasi-resonant operation over a wide-range of line voltage and any load conditions, as well as reducing switching loss to minimize switching voltage on drain of power MOSFET.

To minimize standby power consumption and light-load efficiency, a proprietary green-mode function provides off-time modulation to decrease switching frequency and perform extended valley voltage switching to keep to a minimum switching voltage. The operating frequency is limited by minimum t_OFF time, which is 38µs to 8µs in FAN6300A and 13µs to 3µs in FAN6300H, so FAN6300H can operate at higher switching frequency than FAN6300A.

FAN6300A/H controller also provides many protection functions. Pulse-by-pulse current limiting ensures the fixed-peak current limit level, even when a short circuit occurs. Once an open-circuit failure occurs in the feedback loop, the internal protection circuit disables PWM output immediately. As long as V_DD drops below the turn-off threshold voltage, the controller also disables PWM output. The gate output is clamped at 18V to protect the power MOS from high gate-source voltage conditions. The minimum t_OFF time limit prevents the system frequency from being too high. If the DET pin triggers OVP, internal OTP is triggered and the power system enters latch-mode until AC power is removed. The FAN6300A/H controller is available in an 8-pin Small Outline Package (SOP).

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Product Status/Pricing/Packaging

Index	Product	Product & Eco Status	*Pricing	Packaging & Packing Info	**Package Marking Convention	Qualification Support	Compliance Certificates
0	FAN6300HNY	Last time buys being accepted until 14-Sep-2013 Green as of Dec 2009	$0.62	MDIP 8L Details MDIP 8L Drawing RAIL	Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K Line 2:6300H Line 3:NYD	FIT : 1 ESD (HBM) : 3000 V Moisture Sensitivity Level (MSL) : NA Show more... Max Reflow Temp : 999	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG
0	FAN6300HMY	Full Production Green as of Jul 2009	$0.78	SO 8L NB Details SO 8L NB Drawing TAPE REEL	Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K Line 2:6300H Line 3:MYD	FIT : 1 ESD (HBM) : 3000 V Moisture Sensitivity Level (MSL) : 1 Show more... Max Reflow Temp : 260	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG

Fairchild 1,000 piece Budgetary Pricing. *
If there is no sample button displayed at the top of the page, please contact one of the Fairchild distributors or your local sales office to obtain samples.
Top mark packaging information for product FAN6300H is available. **

Features

High-Voltage Startup
Quasi-Resonant Operation
Cycle-by-Cycle Current Limiting
Peak-Current-Mode Control
Leading-Edge Blanking (LEB)
Internal Minimum t_OFF
Internal 5ms Soft-Start
Over Power Compensation
GATE Output Maximum Voltage
Auto-Recovery Over-Current Protection (FB Pin)
Auto-Recovery Open-Loop Protection (FB Pin)
VDD Pin and Output Voltage (DET Pin) OVP Latched
Low Frequency Operation (below 100kHz) for FAN6300A
High Frequency Operation (up to 190kHz) for FAN6300H

Applications

Notebook PC

External AC-DC Merchant Power Supply - Wireless Communications

DVD

STB

Application Notes

Application Note	Description
AN-6300	FAN6300/A/H Highly Integrated Quasi-Resonant PWM Controller(572 K) 03-Mar-2011

Reference Designs

Application	Document Number	Featured Products	Output Power	Input Voltage	Topology
LED Lighting	RD-400	FAN3111C, FAN6300H, FAN7346, FAN7382, FL7930C, FSL138MRT	100W	80~310V _AC

Additional Resources

Design Tools Knowledgebase – Ask a Question Find a local sales office Product change notices (PCN) How to Buy Products or Order Samples

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