Power Integrations INN3997CQ-TL
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $94,999.99 | $94,999.99 |
| 15+ | $91,999.99 | $1,379,999.85 |
| 25+ | $89,999.99 | $2,249,999.75 |
| 50+ | $84,999.99 | $4,249,999.50 |
| 100+ | $74,999.99 | $7,499,999.00 |
| N+ | $15,000.00 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Power Integrations |
| Product Series | CQ |
| Packaging | Tape & Reel (TR) | |
| Output Isolation | Isolated |
| Internal Switch(s) | Yes |
| Voltage - Breakdown | 900V |
| Topology | Flyback, Secondary Side SR |
| Voltage - Start Up | 30 V |
| Voltage - Supply (Vcc/Vdd) | 30V ~ 650V |
| Duty Cycle | - |
| Frequency - Switching | 25kHz ~ 95kHz |
| Power (Watts) | 55 W |
| Fault Protection | Current Limiting, Over Temperature, Over Voltage |
| Control Features | Soft Start |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 24-PowerSMD Module (0.425", 10.80mm Width), 17 Leads |
| Supplier Device Package | InSOP-24D |
| ROHS |
The Power Integrations INN3997CQ-TL is an isolated flyback AC/DC converter with secondary-side synchronous rectification and an integrated 900V power switch. Rated for 55W, it operates from a 30V–650V Vcc supply with a 30V start-up threshold and a 25kHz–95kHz switching frequency range. Current limiting, over temperature, and over voltage protections plus soft start support reliable operation across a -40°C to 125°C ambient range in a 24-PowerSMD module.
- Integrated 900V switch reduces external component count and simplifies high-voltage offline designs.
- 55W power rating with isolated flyback and secondary-side SR supports efficient, safe conversion.
- Wide 30V–650V Vcc supply and 30V start-up threshold accommodate high-voltage bus rails.
- Soft start plus current limiting, OTP, and OVP protections enhance reliability.
- -40°C to 125°C ambient range suits industrial and appliance applications.
55W AC/DC Power Adapters
With a 55W power rating and integrated 900V switch, the INN3997CQ-TL fits compact offline adapters requiring high-voltage ruggedness and reduced component count.
Industrial and Appliance Power
The 900V breakdown rating offers strong margin for mains transients, while the -40°C to 125°C ambient temperature range supports industrial and appliance environments.
Chargers and Consumer Electronics
Isolated flyback topology with secondary-side SR delivers safe, efficient power for chargers, and soft start limits inrush stress during power-up.
High-Voltage Input Designs
A 30V start-up threshold and 30V–650V Vcc supply range make this device well suited to designs operating from wide, high-voltage DC bus rails.
- Q: What topology does the INN3997CQ-TL use?
- A: It is an isolated flyback converter with secondary-side synchronous rectification.
- Q: Does it include an integrated switch?
- A: Yes, the power switch is integrated on-chip, simplifying design and reducing external components.
- Q: What is the breakdown voltage?
- A: The device is rated for 900V breakdown voltage.
- Q: How much power can it deliver?
- A: It is rated for 55W output power.
- Q: What switching frequency range does it support?
- A: It operates from 25kHz to 95kHz.
- Q: What protections are included?
- A: Current limiting, over temperature, and over voltage protection, plus soft start.
- Q: What topology does the INN3997CQ-TL use?
- A: It is an isolated flyback converter with secondary-side synchronous rectification.
- Q: Does it include an integrated switch?
- A: Yes, the power switch is integrated on-chip, simplifying design and reducing external components.
- Q: What is the breakdown voltage?
- A: The device is rated for 900V breakdown voltage.
- Q: How much power can it deliver?
- A: It is rated for 55W output power.
- Q: What switching frequency range does it support?
- A: It operates from 25kHz to 95kHz.
- Q: What protections are included?
- A: Current limiting, over temperature, and over voltage protection, plus soft start.

INN3997CQ-TL.pdf