Product overview
Description
The EVLSRK1001-TO is a demonstration board, designed for evaluation of the SRK1001 synchronous rectification controller.
The SRK1001 implements a control scheme specific for secondary-side synchronous rectification in flyback converters and provides high-current gate-drive outputs for driving N-channel Power MOSFET. The device can operate both in quasi-resonant (QR) applications and in fixed frequency (FF) mixed DCM-CCM applications. The board is provided with a setting suitable for QR application. To use in FF applications, a 100 pF capacitor needs to be added in C3. A 120 kΩ resistor (R3) is provided on the TON pin that fixes the blanking after the turn-on to about 1.44 μs. The blanking time after turn-off is set to 3 μs through a 100 kΩ resistor (R4) on TOFF pin.
In order to use the DIS/SYNC pin functionality, the user has to remove the zero ohm resistor R9: the PCB already provides a npn transistor connected to this pin for remote ON/OFF.
The board includes the SR MOSFET (TO220FP package) and can be easily implemented into an existing converter to substitute rectifier diodes.
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All features
- Synchronous rectifier for flyback converter, with fixed turn-on and adaptive turn-off
- Vcc range: 3.5 V to 32 V
- DVS sensing voltage: 185V AMR
- Max frequency: 500 kHz
- Internal gate drive for N-channel MOSFET
- SR MOSFET type: FDPF190N15A (150 V – 19 mΩ) TO220FP
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | WEEE Compliant | Material Declaration** |
|---|---|---|---|---|---|---|
| EVLSRK1001-TO | Active | CARD | Industrial | Ecopack1 | - | |
EVLSRK1001-TO
Package:
CARDMaterial Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Supplier | Core Product | Board production status | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EVLSRK1001-TO | | | distributors No availability of distributors reported, please contact our sales office |
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EVLSRK1001-TO Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors