The TNY268PN is a part of the TinySwitch series from Power Integrations. This particular part is a highly integrated power switch designed for applications such as low-power off-line switching regulators. It is typically used in power supply designs.
Here’s a breakdown of what you requested:
1. Package Type of TNY268PN
The TNY268PN is typically available in a DIP-8 (Dual In-line Package with 8 pins).
2. Pin Function and Description for TNY268PN (8 pins)
The TNY268PN comes in a DIP-8 package, meaning it has 8 pins. Here is a detailed pinout and function description for each of the pins.
Pin No. Pin Name Function Description 1 Drain Drain Pin: This is the power supply input pin. It is connected to the primary side of the transformer in a power supply circuit. It is responsible for the high-voltage side connection. 2 Source Source Pin: The Source pin is the ground pin of the device and is used to establish a reference for the rest of the circuit. It connects to the ground of the system. 3 Gate Gate Pin: This pin controls the switching operation. It is connected to the gate of the internal MOSFET and controls when the MOSFET is on or off in the switching cycle. 4 Vdd Vdd Pin: This is the power supply input for the IC. The Vdd pin is responsible for powering the internal control circuitry. It also helps with voltage regulation and controls the start-up process of the IC. 5 Feedback Feedback Pin: This pin is used for feedback from the secondary side to the control IC. This is part of the feedback loop to regulate the output voltage. 6 Not Connected NC (No Connect): This pin is not internally connected to any functional part of the circuit. It may be reserved for future functions, or for keeping package consistency across multiple devices. 7 Drain Drain Pin (Second Drain): This is another connection to the high-voltage drain side of the transformer. 8 Source Source Pin (Second Source): This pin, like the Source Pin 2, is part of the secondary side for grounding and voltage reference for the power switch.3. Frequently Asked Questions (FAQ)
Here are 20 common FAQs about the TNY268PN with detailed answers.
What is the typical application for TNY268PN? The TNY268PN is primarily used in low-power off-line switching regulator designs, such as in AC-to-DC converters, power supplies, and adapters. What is the voltage range supported by TNY268PN? The TNY268PN supports an input voltage range from 85V to 265V AC, making it suitable for global applications. What type of package does the TNY268PN come in? The TNY268PN is available in an 8-pin DIP-8 package. What is the maximum output power of TNY268PN? The TNY268PN can deliver up to 15W of output power, depending on the application and design. How does TNY268PN regulate output voltage? The TNY268PN uses a feedback mechanism through the Feedback pin to regulate the output voltage. What are the switching frequency ranges for the TNY268PN? The switching frequency is typically between 20kHz to 100kHz, depending on the application requirements. What is the significance of the Feedback pin? The Feedback pin allows for voltage regulation by providing feedback from the secondary side of the power supply to the IC. What is the function of the Vdd pin? The Vdd pin powers the internal circuitry of the IC and also helps to establish voltage regulation during start-up. Can the TNY268PN be used in a flyback converter design? Yes, the TNY268PN is designed to work efficiently in flyback converters.What are the thermal characteristics of the TNY268PN?
The TNY268PN has a typical junction temperature of 125°C and can operate within a temperature range of -40°C to +125°C.How do I protect the TNY268PN from over-voltage or under-voltage conditions?
You can use external circuitry, such as Zener diodes or dedicated protection ICs, to prevent over-voltage or under-voltage conditions.What is the maximum operating temperature for the TNY268PN?
The maximum operating temperature is 125°C, as per the device’s specifications.How does the TNY268PN handle short-circuit protection?
The TNY268PN includes an integrated short-circuit protection mechanism that can safely shut down the device under fault conditions.How can I use the TNY268PN to design a low standby power supply?
You can take advantage of its integrated low standby current features, allowing for designs with minimal standby power consumption.Does the TNY268PN have over-temperature protection?
Yes, the TNY268PN includes over-temperature protection to prevent thermal runaway and ensure safe operation under high-temperature conditions.What is the output voltage regulation mechanism of TNY268PN?
It uses feedback from the output side (secondary side of transformer) to regulate and stabilize the output voltage according to the feedback loop.How do I calculate the required output power for TNY268PN?
Output power calculation depends on the input voltage, efficiency, and the required output voltage. Use the basic power supply equations considering transformer turns ratio and efficiency.Can TNY268PN be used in isolated power supply designs?
Yes, it is designed for isolated power supplies, such as flyback and buck converters.What is the failure mode of the TNY268PN under overcurrent conditions?
The TNY268PN shuts down the output when overcurrent conditions are detected, protecting the circuit.What are the typical applications for the TNY268PN?
Applications include low-power AC-to-DC converters, chargers, adapters, and auxiliary power supplies.The above information gives you the details of the TNY268PN's pin functions and a common FAQ section for this IC.
