TFS762HG

Duty Cycle:	70%
Mounting Type:	Through Hole
Supplier Device Package:	16-eSIPB
Package / Case:	16-SSIP, 12 Leads, Exposed Pad, Formed Leads
Operating Temperature:	-40°C ~ 150°C (TJ)
Control Features:	EN
Fault Protection:	Current Limiting, Over Temperature, Over Voltage, Short Circuit
Power (Watts):	360W
Frequency - Switching:	66kHz
Series:	HiperTFS®
Voltage - Supply (Vcc/Vdd):	11.1 V ~ 13.4 V
Voltage - Start Up:	12.1V
Topology:	Flyback, Forward
Voltage - Breakdown:	530V, 725V
Internal Switch(s):	Yes
Output Isolation:	Isolated
Part Status:	Active
Packaging:	Tube

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Introduction

The TFS762HG is an integrated offline switcher from Infineon that offers a wide range of applications. It is a monolithic, high efficiency and low noise solution that operates from a wide range of primary and secondary source voltages. It is a cost effective, robust and reliable alternative to traditional linear regulators and has the ability to provide higher switching frequencies and increased efficiency. The TFS762HG is capable of providing a constant output voltage for a broad range of input voltages and load conditions.

Application Field

The TFS762HG is suitable for applications such as non-isolated Tier-2 point-of-load (PoL) or switched-mode power supplies (SMPS) applications. Applications include telecommunications, industrial automation, computers, and audio amplifiers.

Working Principle

The TFS762HG operates in either a non-synchronous buck or buck-boost topology depending on input and output voltages. In buck-boost topology, the TFS762HG steps up or down the input voltage as required to match the output voltage. The converter works as a voltage mode, utilizing a current-mode control system. The switching frequency is fixed at either 150KHz or 250KHz, depending on the design.The core of the converter consists of a standard buck switching regulator operating in a current-mode control system. The current-mode control system provides better dynamic response for voltage irregularities seen at the output. The switching frequency is set with an external resistor. The internal soft start circuit is optimized for maximum output stability over line and load variations.The TFS762HG features a low current mode architecture which offers a high level of efficiency. In addition, integrated over-voltage, short-circuit and thermal protection prevent the device from overloading and helps to extend the life of the device. The TFS762HG also has a light load efficiency optimization feature which reduces switching losses when the output is operating at light load.

Conclusion

The TFS762HG integrated offline switcher from Infineon is a robust, cost effective and reliable solution that offers high efficiency and low noise. The TFS762HG is suitable for various applications with its wide range of primary and secondary source voltages. It operates in either a non-synchronous buck or buck-boost topology, depending on input and output voltages. The internal soft start circuit and light load efficiency optimization ensure maximum output stability and reduce switching losses.

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