Power Integrations TOP257PG
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.33 | $1.33 |
| 15+ | $1.29 | $19.35 |
| 25+ | $1.26 | $31.50 |
| 50+ | $1.19 | $59.50 |
| 100+ | $1.05 | $105.00 |
| N+ | $0.21 | 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 TOP257PG from Power Integrations is a flyback offline switcher with an integrated 700V power switch, delivering up to 41 W at 66 kHz with 78% maximum duty cycle. It provides galvanically isolated output with current limiting, over temperature, and over voltage protection across a -40°C to 150°C junction range in an 8-DIP package.
- Integrated 700V switch reduces external component count and board space.
- Flyback topology delivers galvanically isolated output for offline supplies.
- 41 W output at 66 kHz suits compact adapter designs.
- Current limiting, over temperature, and over voltage protection improve reliability.
- -40°C to 150°C junction range supports thermally demanding applications.
Compact Isolated Adapters
The 41 W rating and integrated 700V switch enable compact flyback adapters with fewer external components.
Offline Power Supplies
Flyback topology provides galvanically isolated output for general offline AC-DC conversion.
Thermally Demanding Enclosures
-40°C to 150°C junction range supports reliable operation in high-temperature environments.
Fault-Protected Designs
Current limiting, over temperature, and over voltage protection cover common fault conditions.
- Q: What topology does the TOP257PG use?
- A: It is a flyback offline switcher providing galvanically isolated output.
- Q: Does it have an integrated switch?
- A: Yes, it integrates the power switch with a 700V breakdown rating.
- Q: What output power does it support?
- A: 41 W.
- Q: What switching frequency and max duty cycle?
- A: 66 kHz switching frequency with 78% maximum duty cycle.
- Q: What protections are included?
- A: Current limiting, over temperature, and over voltage protection.
- Q: What topology does the TOP257PG use?
- A: It is a flyback offline switcher providing galvanically isolated output.
- Q: Does it have an integrated switch?
- A: Yes, it integrates the power switch with a 700V breakdown rating.
- Q: What output power does it support?
- A: 41 W.
- Q: What switching frequency and max duty cycle?
- A: 66 kHz switching frequency with 78% maximum duty cycle.
- Q: What protections are included?
- A: Current limiting, over temperature, and over voltage protection.

TOP257PG.pdf