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Audio
Power Integrations offers a range of power conversion ICs that can provide reliable, efficient, low cost power solutions for audio power applications. Capable of supporting peak power requirements in excess of three times average power requirements with no increase in transformer size, the PeakSwitch® product family is ideal for supporting applications with large peak loads, such as:
- Audio amplifiers
- Computer audio
- Home theater
- MP3 music players
- MP3 audio systems
- Digital radio applications
The table below describes which family of PI ICs is suited for a typical application. Where product families overlap, selection of the best device can be facilitated by use of PI Expert™ software, available here.
Typical Applications
| Typical Product Application | Design Ideas | Design Example Reports | Engineering Prototype Reports | Reference Design Kits |
|---|---|---|---|---|
| 75 W, (126 W) PeakMultiple Output Flyback Power Supply Using Magnetic Amplifiers |  | |||
| 80 W, (200 W Peak) Multiple Output Power Supply | | |||
| 70 W (126 W Peak) Audio Amplifier Power Supply | | |||
| 24 W (36 W Peak) Audio Amplifier Power Supply | | |||
| 10 W Adapter for Portable Audio Players With Latching Overvoltage and Over-Temperature Shutdown Protection | | |||
| 20 W (43 W Peak) Audio Amplifier Power Supply | | |||
| 5 W High Efficiency Charger for Portable Audio Players | | |||
| General Purpose 32 W (81 W Peak) Supply | | | DAK-93 | |
| 12 W Universal Input CV Adapter | | | RDK-91 | |
| Low-Cost 2 W Universal Input CV Adapter | | | DAK-89 | |
| 16 W Audio Amplifier Power Supply | |
Product Families Used in These Applications
| IC Product Family | Typical Circuit Configuration | Power/Current Rating* | Description |
|---|---|---|---|
| LinkSwitch®-XT | Buck | Up to 6 W | Energy-efficient capacitive drop replacement with minimal external component required |
| TinySwitch®-III | Flyback | Up to 28.5 W | Improved design flexibility, Reduced input capacitance and transformer size due to time extension and I2f ratings. |
| PeakSwitch | Flyback | Up to 290 W† | Enhanced, energy-efficient, off-line Switcher IC with super peak power performance |
| TOPSwitch®-HX | Flyback | Up to 148 W | Incorporates a 700 V power MOSFET, high voltage switched current source, PWM control, oscillator, thermal shutdown circuit, fault protection and other control circuitry onto a monolithic device |
| TOPSwitch®-GX | Flyback | Up to 210 W | Maximum design flexibility and higher power ratings, External programmable current limit, Under-voltage and over-voltage protection. |
| TinySwitch®-PK | Flyback | Up to 35 W | Peak surge power capability allows more power for audio applications without increasing component size |
* Universal input, open frame
† Peak power output
Related Design Support Documents
| General Design Information | | Design Guides | |
|---|---|---|---|
| Product Datasheets | AN-15 | TOPSwitch® Power Supply Design Techniques for EMI and Safety | |
| TinySwitch-III | AN-37 | LinkSwitch®-TN Design Guide | |
| TOPSwitch-GX | AN-32 | TOPSwitch-GX Flyback Design Methodology | |
| TOPSwitch-HX | AN-41 | PeakSwitch Design Guide | |
| LinkSwitch-TN | AN-43 | TOPSwitch-HX Design Guide | |
| PeakSwitch | |||
| Package Information | |||
Related Links
Power Integrations News:
See Andrew Smith, product marketing manager for the PeakSwitch family, talk about the PKS607 here.
See the version subtitled in Traditional Chinese.
See the version subtitled in Simplified Chinese.
Power Integrations Support:
- PI Expert™, our interactive design program, takes a user's power supply specifications and automatically determines the critical components (including transformer specifications) needed to generate a working switched mode power supply. It reduces design time from days to minutes.
- Designers can also use our "Ask an Engineer" feature or consult our reference library, containing more than 200 online reference designs, applications notes , engineering prototype reports, design ideas, and other documents.
- Design of an Audio Power System describes the benefits of using PeakSwitch to design an audio system power supply for up to 85 W peak power.
Contact your local Power Integrations Sales Representative or Distributor for assistance.