Power Integrations TOP257YN
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $2.51 | $2.51 |
| 15+ | $2.43 | $36.45 |
| 25+ | $2.38 | $59.50 |
| 50+ | $2.24 | $112.00 |
| 100+ | $1.98 | $198.00 |
| N+ | $0.40 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Power Integrations |
| Product Series | TOPSwitch®-HX |
| Packaging | Tube | |
| Output Isolation | Isolated |
| Internal Switch(s) | Yes |
| Voltage - Breakdown | 700V |
| Topology | Flyback |
| Voltage - Start Up | - |
| Voltage - Supply (Vcc/Vdd) | - |
| Duty Cycle | 78% |
| Frequency - Switching | 66kHz, 132kHz |
| Power (Watts) | 157 W |
| Fault Protection | Current Limiting, Over Temperature, Over Voltage |
| Control Features | - |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | TO-220-7 Formed Leads, 6 Leads |
| Supplier Device Package | TO-220-7C |
| ROHS |  |
The Power Integrations TOP257YN is a flyback offline switcher from the TOPSwitch-HX series delivering up to 157 W with a 700V breakdown rating and integrated switch. In a TO-220-7 formed-leads package, it provides galvanically isolated output, 78% max duty cycle, 66kHz/132kHz switching, and current limiting, over temperature, and over voltage protection.
- High 157 W output power for demanding isolated supplies.
- Integrated switch simplifies flyback design.
- 700V breakdown voltage for robust offline operation.
- Fault protection (current limiting, over temperature, over voltage) improves reliability.
- Wide -40°C to 150°C junction temperature range.
High-Power AC-DC Supplies
The TOP257YN flyback topology with integrated switch and 700V breakdown delivers up to 157 W, suited to higher-power isolated supplies.
Industrial Power Systems
With a -40°C to 150°C junction temperature range and 78% max duty cycle, it supports robust isolated power in industrial equipment.
Consumer and Appliance Power
66kHz/132kHz switching and TOPSwitch-HX design enable isolated flyback supplies for appliances and consumer devices.
Telecom and Networking Auxiliary Rails
Fault protection including current limiting, over temperature, and over voltage supports reliable isolated housekeeping power.
- Q: What topology does the TOP257YN use?
- A: It is a flyback offline switcher with galvanically isolated output and an integrated switch.
- Q: What is the breakdown voltage?
- A: The Vds breakdown rating is 700V.
- Q: How much power does it deliver?
- A: Up to 157 W.
- Q: What switching frequency does it use?
- A: 66kHz or 132kHz.
- Q: What protections are included?
- A: Current limiting, over temperature, and over voltage protection.
TOP257YN.pdf
- Q: What topology does the TOP257YN use?
- A: It is a flyback offline switcher with galvanically isolated output and an integrated switch.
- Q: What is the breakdown voltage?
- A: The Vds breakdown rating is 700V.
- Q: How much power does it deliver?
- A: Up to 157 W.
- Q: What switching frequency does it use?
- A: 66kHz or 132kHz.
- Q: What protections are included?
- A: Current limiting, over temperature, and over voltage protection.
