Power Integrations TOP257PN
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.90 | $1.90 |
| 15+ | $1.84 | $27.60 |
| 25+ | $1.80 | $45.00 |
| 50+ | $1.70 | $85.00 |
| 100+ | $1.50 | $150.00 |
| N+ | $0.30 | 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 |
| Power (Watts) | 41 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 | 8-DIP (0.300", 7.62mm), 7 Leads |
| Supplier Device Package | 8-PDIP-C |
| ROHS |  |
The TOP257PN from Power Integrations is an isolated flyback offline switcher with an integrated 700 V switch. It delivers up to 41 W at 66 kHz with a 78% maximum duty cycle and includes current limiting, over temperature, and over voltage protection in an 8-DIP package rated for -40°C to 150°C junction temperatures.
- Integrated 700 V switch simplifies isolated flyback design and reduces BOM count.
- 41 W output at 66 kHz supports general-purpose offline supplies.
- 78% max duty cycle provides flexible design margins.
- Current limiting, OTP, and OVP protection enhance reliability.
- Wide -40°C to 150°C junction range suits demanding thermal environments.
General-Purpose AC-DC Supplies
The 41 W rating and 66 kHz flyback operation with 78% max duty cycle make this device suitable for general-purpose isolated offline supplies.
Industrial Bias and Auxiliary Power
A 700 V breakdown rating and -40°C to 150°C junction range support isolated bias supplies in demanding industrial environments.
Consumer Electronics Adapters
Integrated switch and built-in protection simplify isolated flyback designs for set-top boxes, chargers, and small adapters.
Appliance Power Boards
Current limiting, OTP, and OVP protection help ensure reliable isolated power in household appliances.
- Q: What topology does the TOP257PN use?
- A: It is an isolated flyback offline switcher.
- Q: What is the breakdown voltage?
- A: The integrated switch is rated at 700 V.
- Q: What is the maximum output power?
- A: Up to 41 W.
- Q: What is the maximum duty cycle?
- A: 78%.
- Q: What switching frequency does it use?
- A: 66 kHz.
- Q: What protections are included?
- A: Current limiting, over temperature, and over voltage protection.
TOP257PN.pdf
- Q: What topology does the TOP257PN use?
- A: It is an isolated flyback offline switcher.
- Q: What is the breakdown voltage?
- A: The integrated switch is rated at 700 V.
- Q: What is the maximum output power?
- A: Up to 41 W.
- Q: What is the maximum duty cycle?
- A: 78%.
- Q: What switching frequency does it use?
- A: 66 kHz.
- Q: What protections are included?
- A: Current limiting, over temperature, and over voltage protection.
