TNY377GN-TL

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TNY377GN-TL is a high efficiency offline switching regulator IC that can be used in various applications such as battery charging, adapter, DC-DC converter, and LED driver. The device supports a wide input voltage range from 8 V to 370 V and can deliver an output current up to 0.75 A.

Application Field

Due to its wide input voltage range, TNY377GN-TL can be used in a variety of applications. It can be used in automotive battery chargers and adapters, consumer appliances, mobile devices, and many other applications. The device is able to detect the input voltage and to turn on or off the power supply by controlling the Pulse Width Modulation (PWM) duty cycle, eliminating the need of traditional power switches. It can also be used as a DC/DC converter to convert a low voltage DC power supply to a higher voltage DC power supply. It can also be used as a current-mode DC/DC converter to deliver a constant current load.

Working Principle

The TNY377GN-TL is a self-powered direct-drive circuit, which means that the power supply voltage is applied directly to the IC. The circuit consists of an oscillator and a power switch connected in series with each other. When the input power source is applied, the oscillator produces a fixed frequency rectangular waveform. The output frequency is determined by the external components connected to the Oscillator pins. The power switch connects a resistor and a capacitor in series. When the switch is on, the voltage on the capacitor rises until it reaches the peak value of the input voltage. When this voltage reaches its peak, the switch turns off, and the capacitor charges back down to its previous value. This cycle repeats at the preset frequency determined by the components connected to the oscillator pins, producing a train of pulses. The duty cycle of these pulses controls the amount of power delivered to the load.

The TNY377GN-TL device is specifically designed for offline switching applications, and it offers the following features:

• High efficiency
• Low standby power consumption
• High integration
• Low input current overshoot
• Frequency fold-back mode
• Over-current protection
• Over voltage and under voltage protection
• Output short-circuit protection
• Low EMI radiation

The TNY377GN-TL is a versatile and highly efficient device that can be used in a variety of applications. It can be used to convert an AC mains power source to a regulated DC supply, or to convert a low voltage DC supply to a higher voltage DC supply. It can also be used to power LED drivers and other low voltage DC applications.

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