Topology | Push-Pull Converter symmetrical isolated |
Input voltage | 3.3 V |
Switching frequency | 138-203 kHz |
Output 1 | 3.3 V / 1 A |
IC revision | I |
The SN6505 is a low-noise, low-EMI push-pulltransformer driver, specifically designed for smallform factor, isolated power supplies. It drives lowprofile,center-tapped transformers from a 2.25 V to5 V DC power supply. Ultra-low noise and EMI areachieved by slew rate control of the output switchvoltage and through Spread Spectrum Clocking(SSC). The SN6505 consists of an oscillator followedby a gate drive circuit that provides thecomplementary output signals to drive groundreferencedN-channel power switches. The deviceincludes two 1-A Power-MOSFET switches to ensurestart-up under heavy loads. The switching clock canalso be provided externally for accurate placement ofswitcher harmonics, or when operating with multipletransformer drivers. The internal protection featuresinclude a 1.7A current limiting, under-voltage lockout,thermal shutdown, and break-before-make circuitry.SN6505 includes a soft-start feature that preventshigh inrush current during power up with large loadcapacitors. The SN6505 is available in a small 6-pinSOT23/DBV package. The device operation ischaracterized for a temperature range from –55°C to125°C.
Push-Pull Driver for transformers
Order Code | Datasheet | Downloads | Product series | VIN | VOut1 (V) | IOut1 (A) | Type of Insulation | fswitch (kHz) | ∫Udt (Vµs) | NPRI : NSEC | L (µH) | VT (V (AC)) | L (mm) | W (mm) | H (mm) | Mount | Samples | |
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![]() | 750316028 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | 7 files | WE-PPTI Push-Pull Transformers | 3.3 V (DC) | 3.3 | 0.8 | Functional | 400 | 8.9 | 1:1.7 | 72 | 2500 | 8.3 | 12.6 | 4.1 | SMT |
Order Code | Datasheet | |
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![]() | 750316028 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. |
Samples |
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Order Code | Datasheet | Downloads | Product series | VIN | VOut1 (V) | IOut1 (A) | Type of Insulation | fswitch (kHz) | ∫Udt (Vµs) | NPRI : NSEC | L (µH) | VT (V (AC)) | L (mm) | W (mm) | H (mm) | Mount | Samples |
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