SRK2001A AC-DC Converters by STMicroelectronics

Adaptive synchronous rectification controller for LLC resonant converter

Status: Active
Series: SRK2001A
RoHS: Compliant
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The SRK2001A controller implements a control scheme specific for secondary side synchronous rectification in LLC resonant converters that use a transformer with center tap secondary winding for full wave rectification. It provides two high current gate drive outputs, each capable of directly driving N-channel power MOSFET. Each gate driver is controlled separately, and an interlock logic circuit prevents the two synchronous rectifier MOSFET from conducting simultaneously. The driver high-level voltage is clamped to 11 V in order to avoid delivering excessive gate charge to the SR MOSFET when the device is supplied at higher VCC voltages. The control scheme ensures that each synchronous rectifier is switched ON as the corresponding half-winding starts conducting and OFF as its current falls to zero. The turn-on logic with adaptive masking time (up to 10% of clock cycle) and innovative adaptive turn-off logic allow maximizing the conduction time of the SR MOSFET, eliminating the need for a parasitic inductance compensation circuit. The low consumption mode of the device allows meeting the most stringent requirement for converter power consumption in light-load and no-load conditions. A very low external component count required when using this device.

Where to Buy

Prices starting from US$1.09

Distributor Stock
Logo for Farnell
Farnell
from US$1.42
1,715
in stock
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Logo for element14
element14
from US$1.42
1,715
in stock
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Logo for Newark Electronics
Newark Electronics
from US$1.49
-
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Logo for Future Electronics
Future Electronics
from US$1.09
-
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Logo for Avnet America
Avnet America
from US$1.18
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Logo for EBV Elektronik
EBV Elektronik
-
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Logo for Avnet Silica
Avnet Silica
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Features

Secondary side synchronous rectification controller optimized for LLC resonant converter
Dual gate driver for N-channel MOSFETs
Adaptive turn-off logic
Turn-on logic with adaptive masking time
Auto-compensation of parasitic inductance
Low consumption mode: 50 μA quiescent current
VCC operating voltage range 4.5 V to 32 V
High voltage drain-to-source Kelvin sensing for each SR MOSFET
Operating frequency up to 500 kHz
Programmable exit load levels from burst- mode
SSOP10 package

Alternative Descriptions

SYNC RECTIFICATION CONTROLLER, SSOP-10 | element14
Sync Rectification Controller, Ssop-10 | Newark Electronics
Power Management Specialized - PMIC Adaptive synchronous rectification controlle | Future Electronics
Adaptive Synchronous Rectification Controller 10-Pin SSOP Tube | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a SRK2001A?

Additional datasheets, footprints and schematics for SRK2001A are listed on our Part Details page. You can also find images and similar parts to SRK2001A on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for SRK2001A on our Product Comparison page. Access via the 'View Pricing & Stock' button to view SRK2001A price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does SRK2001A fall under?

The SRK2001A is listed under Power Management > AC-DC Converters > Synchronous Rectification Controllers.

Can I view similar or alternative parts?

You can view similar parts to SRK2001A when available in the Synchronous Rectification Controllers range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the SRK2001A you can contact the distributor directly for product support, shipping queries etc.

Is the SRK2001A RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

Which authorised distributors for SRK2001A have stock available?

Authorised distributors including element14, Farnell, Newark Electronics, Future Electronics and Avnet America have stock available or on a lead time for SRK2001A.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for SRK2001A often in real-time on the comparison pages.

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