Power Integrations TOP257EG
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.58 | $1.58 |
| 15+ | $1.53 | $22.95 |
| 25+ | $1.49 | $37.25 |
| 50+ | $1.41 | $70.50 |
| 100+ | $1.25 | $125.00 |
| N+ | $0.25 | 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 | 7-SSIP, 6 Leads, Exposed Pad, Formed Leads |
| Supplier Device Package | eSIP-7C |
| ROHS |
The Power Integrations TOP257EG is a Flyback offline switcher from the TOPSwitch®-HX series with an integrated switch and 700V breakdown voltage. It delivers up to 157 W with 66kHz/132kHz switching and 78% max duty cycle, housed in a 7-SSIP package with exposed pad.
- Integrated switch simplifies isolated Flyback designs.
- 700V breakdown supports robust offline operation.
- Up to 157 W output power for medium-power supplies.
- Current limiting, over temperature, and over voltage protection.
- -40°C to 150°C junction temperature range.
AC-DC Power Supplies
The TOP257EG Flyback switcher with integrated switch and 700V breakdown suits isolated offline power supplies up to 157 W.
Industrial Adapters
Operating from -40°C to 150°C junction temperature, it fits adapters in demanding environments.
Consumer Electronics Power
66kHz/132kHz switching and 78% max duty cycle support compact isolated designs.
Standby and Auxiliary Rails
Current limiting and over voltage protection help safeguard auxiliary supply rails.
- Q: What topology does the TOP257EG use?
- A: It is a Flyback offline switcher with galvanically isolated output and an integrated switch.
- Q: What is the breakdown voltage?
- A: 700V Vds rating.
- Q: What power can it deliver?
- A: Up to 157 W.
- Q: What switching frequency does it support?
- A: 66kHz and 132kHz.
- Q: What protections are included?
- A: Current limiting, over temperature, and over voltage.
- Q: What topology does the TOP257EG use?
- A: It is a Flyback offline switcher with galvanically isolated output and an integrated switch.
- Q: What is the breakdown voltage?
- A: 700V Vds rating.
- Q: What power can it deliver?
- A: Up to 157 W.
- Q: What switching frequency does it support?
- A: 66kHz and 132kHz.
- Q: What protections are included?
- A: Current limiting, over temperature, and over voltage.

TOP257EG.pdf