Secondary Side Controllers
Analog Devices’ synchronous secondary side controllers enable higher efficiency solutions, allowing higher power levels and smaller solutions size. Unlike prior solutions that used a signal transformer driven from the primary side to control the synchronous rectifier, our solutions sense the drain-to-source voltage of the MOSFET for activation. This technique not only eliminates a transformer, but allows the secondary side controller to work with ADI’s growing line of no-optocoupler products required for output voltage feedback boundary conduction mode (BCM)/critical conduction mode (CrCM) flyback converters, which makes it highly versatile for many types of applications.
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Актуальные ресурсы по теме
Технические статьи
- Secondary Side Synchronous Post Regulator Provides Precision Regulation and High Efficiency for Multiple Output Isolated Power Supplies
- Increase Current Capability and Simplify Thermal Design of Flyback Converters with Secondary-Side Synchronous Rectifier Driver in a 5-Pin SOT-23
- LT3752/LT8311 240W Isolated Forward Converter
Secondary Side Controllers
| SortOrder | Part# | Number of Outputs | Vin (min) (V) | Vin (max) (V) | Comments | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|
| 1 | LT8311 | 1 | 3.7 | 30 | LT8311 - Synchronous Rectifier Controller with Opto-Coupler Driver for Forward Converters | $3.06 (LT8311EFE#PBF) |
| 2 | LT8309 | 1 | 4.5 | 40 | Secondary-Side Synchronous Rectifier Driver | $1.82 (LT8309ES5#TRPBF) |
| 3 | ADM1041A | 1 | 4.5 | 5.5 | Secondary-Side Controller with Current Share and Housekeeping | $3.31 (ADM1041AARQZ-REEL) |
| 4 | LTC3901 | 1 | 4.5 | 11 | For push-pull and full-bridge converters; programmable timeout, reverse inductor current sense | $2.60 (LTC3901EGN#PBF) |
| 5 | LTC3900 | 1 | 4.5 | 11 | Synchronous Rectifier Driver for Forward Converters | $2.50 (LTC3900ES8#PBF) |
| 6 | LT3710 | 1 | 8 | 24 | Secondary side synchronous post regulator. auxiliary output in isolated power supplies. use with the | $3.95 (LT3710EFE#PBF) |
| 7 | LTC1698 | 1 | 6 | 12.6 | Secondary Synchronous rectifier controller (use LT3781 for primary side) | $5.30 (LTC1698EGN#PBF) |
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