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Updated at 17/06/2025 10:30:15(UTC+8)

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Description

The FAN7621BSJX is a PFM Controller for half-bridge resonant converters. Offering everything necessary to build a reliable and robust resonant converter, the FAN7621B simplifies designs and improves productivity, while improving performance. The FAN7621B 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 FAN7621B can be applied to various resonant converter topologies; such as series resonant, parallel resonant and LLC resonant converters.
High efficiency through zero voltage switching (ZVS)
350ns Fixed dead time
Pulse skipping for frequency limit (programmable) at light-load condition
Remote on/off control using CON Pin
Over-voltage protection (OVP)
Overload protection (OLP)
Over-current protection(OCP)
Abnormal over-current protection (AOCP)
Internal thermal shutdown (TSD)

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FAN7621BSJX Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Surface Mount
Number of Pins	16 Pin
Case/Package	SOIC-16
Frequency	100 kHz
Power Rating	192 W
Input Voltage (DC)	17.0 V
Number of Positions	16 Position
Power Dissipation	1.13 W
Output Power	192 W
Switching Frequency	300kHz (MAX)
Duty Cycle	50 %
Maximum Duty Cycle	50 %
Operating Temperature (Max)	130 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	1130 mW
Input Voltage	17 V
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Size-Length	10.2 mm
Size-Width	5.3 mm
Size-Height	1.8 mm
Operating Temperature	-40℃ ~ 130℃
Product Lifecycle Status	Active
Packaging	Cut Tape (CT)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/06/15

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