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.
- 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
Recommended for you
Quality and Reliability
|Part Number||Marketing Status||Package||Grade||RoHS Compliance Grade||WEEE Compliant||Material Declaration**|
RoHS Compliance Grade
(**) 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||Order from Distributors||Order from ST||Core Product||Marketing Status||Supplier||ECCN (US)||ECCN (EU)||Country of Origin||Board production status||Budgetary Price (US$)*/Qty|
Distributor availability ofEVLSRK1001-TO
Distributor reported inventory date: 2020-08-10
|ST||EAR99||NEC||ITALY||-||20.0 / 1|