Original TNY280PN IC

Description

TNY280PN Chip – One of the Best Options for Medium-Power Switching Power Supplies
In the world of electronics, switching power supplies play a very important role. These supplies are used in many modern electronic devices due to their high efficiency, small space and optimal energy consumption. One of the best and most popular chips used in this field is the TNY280PN chip from the TinySwitch-III family.

By integrating a precise PWM controller and a power transistor in a small package, this chip is a suitable option for designing switching power supplies with a power of up to 20 watts. In this article, we will fully introduce this chip, its technical features, applications and benefits.

Outstanding Features of TNY280PN
Very low startup current: This feature greatly reduces power consumption in no-load mode.
Built-in protection against overheating, overvoltage, short circuit and overload: These features increase the safety and stability of the device.
Adaptive Power Control (Adaptive Switching): This feature allows the chip to automatically switch between different switching modes such as Burst Mode and Normal Mode depending on the load conditions. This maintains high efficiency even at low loads.
No external power supply required: The TNY280PN is self-biased, meaning it does not require an external power supply.
DIP-7 package: This package facilitates easy assembly in through-hole circuits and is suitable for standard power supplies.
Key Specifications
Input Voltage: 85 to 265 V AC (Global)
Output Power:
Maximum 36.5 W in Open Frame mode with 230 V AC input
Maximum 20 W in Enclosed mode with 230 V AC input
Maximum 28.5 W in Open Frame mode with Global input (85–265 V AC)
Maximum 14 W in Enclosed mode with Global input
Switching Frequency: Approx. 132 kHz
Internal Breakdown Voltage: 700 V
Maximum Peak Current: 1360 mA
Duty Cycle: 65%
No-Load Power Consumption: Less than 150 mW
TNY280PN Applications
This chip is used in many electronic applications due to its small design, high efficiency, and safety features. Some of the most important applications include:

Mobile phone chargers and mobile devices
AC/DC adapters
Standby power supplies in televisions, computers, and measuring devices
Audio and video systems
Medium-power, space-constrained electronic devices
Benefits of using TNY280PN
High efficiency: Using adaptive power control and Burst Mode, this chip has high efficiency in all conditions.
Simple and compact design: DIP-7 package and no need for external power supply simplify circuit design.
High safety: Internal protections against overload, short circuit, overheating, and overvoltage ensure device safety.
Energy saving: Power consumption in no-load mode is very low, which is suitable for applications with limited energy consumption.
Wide application: This chip can be used in many modern electronic devices.