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Output Isolation Isolated
Internal Switch(s) No
Voltage - Breakdown -
Topology Half-Bridge
Voltage - Start Up 14.5V
Voltage - Supply (Vcc/Vdd) 11.3V ~ 25V
Duty Cycle 50%
Frequency - Switching Up to 300kHz
Power (Watts) 200W
Fault Protection Current Limiting, Over Load, Over Temperature, Over Voltage
Control Features Frequency Control
Operating Temperature -40°C ~ 130°C (TJ)
Package / Case 16-SOIC (0.209", 5.30mm Width)
Supplier Device Package 16-SOP
Mounting Type Surface Mount
Datasheet
The FAN7621 is a pulse frequency modulation controller for high-efficiency half-bridge resonant converters. Offering everything necessary to build a reliable and robust resonant converter, the FAN7621 simplifies designs and improves productivity, while improving performance. The FAN7621 includes a high-side gate-drive circuit, an accurate current controlled oscillator, frequency limit circuit, soft-start, and built-in protection functions. The high-side gate-drive circuit has a common-mode noise cancellation capability, which guarantees stable operation with excellent noise immunity. Using the zero-voltage-switching (ZVS) technique dramatically reduces the switching losses and efficiency is significantly improved. The ZVS also reduces the switching noise noticeably, which allows a small-sized Electromagnetic Interference (EMI) filter The FAN7621 can be applied to various resonant converter topologies; such as series resonant, parallel resonant, and LLC resonant converters.
Features |
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- Variable Frequency Control with 50% Duty Cycle for Half-bridge Resonant Converter Topology
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- High Efficiency through Zero Voltage Switching (ZVS)
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- Up to 300kHz Operating Frequency
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- Pulse Skipping for Frequency Limit (Programmable) at Light-Load Condition
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- Remote On/Off Control using CON Pin
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- Protection Functions: Over-Voltage Protection (OVP), Overload Protection (OLP), Over-Current Protection (OCP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD)
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Applications |
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- PDP TV
- LCD TV
- Desktop PC
- Server
- Video Game Console
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