Overview
The TNY280PN is an energy-efficient AC-to-DC converter IC from the TinySwitch-III series by Power Integrations. This integrated circuit features a high-voltage, 700V power MOSFET with integrated control circuitry, enhancing its efficiency and reliability in transforming low-power AC to DC. It is commonly used in applications such as chargers, adapters, and standby power supplies due to its multi-mode operation, auto-restart feature, and frequency jittering, which reduces electromagnetic interference.
Key Specifications
| Attribute | Specification |
|---|---|
| Isolation | Isolated |
| Internal Switch | Yes |
| Breakdown Voltage-Max | 700V |
| Topology | Flyback |
| Duty Cycle-Max | 65% |
| Switching Frequency-Max | 140kHz |
| Rated Power | 28.5W |
| Operating Temp Range | -40°C to +150°C |
| Storage Temperature Range | -65°C to +150°C |
| Package Style | PDIP-8C, SMD-8C |
| Mounting Method | Through Hole |
Key Features
- Integrated high-voltage, 700V power MOSFET with control circuitry for enhanced efficiency and reliability.
- Multi-mode operation for energy efficiency across various load levels.
- Auto-restart feature for protection against fault conditions.
- Frequency jittering to reduce electromagnetic interference (EMI).
- User-selectable current limit and hysteretic thermal shutdown for safety and reliability.
- Very low component count, enabling single-sided printed circuit board layout and high reliability.
- High bandwidth for fast turn-on with no overshoot and excellent transient load response.
- Extended creepage between DRAIN and all other pins for improved field reliability.
- No-load power consumption of less than 150 mW at 265 VAC without bias winding and less than 50 mW with bias winding.
Applications
- Chargers and adapters for cell phones, cordless phones, PDAs, digital cameras, MP3/portable audio, shavers, etc.
- PC standby and other auxiliary power supplies.
- DVD/PVR and other low-power set-top decoders.
- Power supplies for appliances, industrial systems, and metering devices.
Q & A
- What is the TNY280PN and what series does it belong to?
The TNY280PN is an AC-to-DC converter IC from the TinySwitch-III series by Power Integrations.
- What is the maximum breakdown voltage of the TNY280PN?
The maximum breakdown voltage of the TNY280PN is 700V.
- What is the topology of the TNY280PN?
The topology of the TNY280PN is flyback.
- What is the maximum switching frequency of the TNY280PN?
The maximum switching frequency of the TNY280PN is 140kHz.
- What are the operating and storage temperature ranges for the TNY280PN?
The operating temperature range is -40°C to +150°C, and the storage temperature range is -65°C to +150°C.
- Does the TNY280PN require an external MOSFET?
No, the TNY280PN features an integrated power MOSFET.
- What are some common applications of the TNY280PN?
Common applications include chargers, adapters, PC standby power supplies, DVD/PVR and other low-power set-top decoders, and power supplies for appliances and industrial systems.
- How does the TNY280PN reduce electromagnetic interference (EMI)?
The TNY280PN reduces EMI through frequency jittering and other design features such as proper PCB layout, shielding, and grounding techniques.
- What is the maximum power that can be achieved with the TNY280PN?
The maximum power depends on the application but can be up to 28.5W for universal input (85-265 VAC) in an open-frame power supply.
- How does the TNY280PN handle fault conditions?
The TNY280PN features an auto-restart mechanism and hysteretic thermal shutdown to handle fault conditions.
