UCC24636DBVT Part Information
The UCC24636 SR is a compact, 6-pin secondaryside synchronous rectifier MOSFET controller and driver for high efficiency Flyback converters operating in Discontinuous (DCM) and Transition mode (TM). Unlike traditional SR controllers which measure the SR MOSFET drain voltage, UCC24636 implements a volt-second balance control method to determine the turn off transition of the SR MOSFET; hence, SR conduction time is independent of the MOSFET RDSON, parasitic inductance or ringing allowing flexibility to designers in component slelction and PCB layout. This control method enables maximum SR conduction time and highest rectifier efficiency for a given MOSFET. The controller has built in intelligence to detect converter no load operation and automatically enters standby mode. While in standby mode, it disables the SR MOSFET and lowers its bias supply current to 110uA to further reduce overall system standby power consumption. The wide VDD operating range for the controller allows direct bias from the converter output for fixed or variable output voltage designs. This eliminates the need for an auxilliary winding on the main transformer, which simplifies the circuit design and reduces the cost.
- Adaptive Gate Drive Clamp
- Auto-Detect Standby Mode Disables SR Switching for Lower No-Load Power Consumption
- Compatible with PSR and SSR Flyback Controllers
- Open and Short Pin Fault Protection
- Operating Frequency Up to 130 kHz
- SR Turn-Off Independent of RDSON and Parasitic Inductance
- Secondary-Side SR Controller Optimized for 5-V to 24-V Output Discontinuous/Transition Mode Only Flyback Converters
- Ultra Low 110-u00b5A Standby Current Consumption
- Volt-Second Balance Control Enables Highest Rectifier Efficiency
- Wide VDD Range from 3.6 V to 28 V
|IC Function||Power Management|
|Supply Voltage Min||3.75V|
|Supply Voltage Max||28V|
|IC Package Type||SOT-23|
|No. of Pins||6Pins|
|Operating Temperature Min||-40°C|
|Operating Temperature Max||125°C|
|Automotive Qualification Standard||-|
|RoHS Phthalates Compliant||Yes|
|MSL||MSL 2 - 1 year|
|SVHC||No SVHC (27-Jun-2018)|
Alternative Part Descriptions
- SYNC RECTIFIER CONTROLLER, SOT-23-6; IC Function:Power Management; Supply Voltage Min:3.75V; Supply Voltage Max:28V; IC Package Type:SOT-23; No. of Pins:6Pins; Operating Temperature Min:-40°C; Operating Temperature Max:125°C; ProductRoHS Compliant: Yes | Newark Electronics
- Synchronous rectifier controller With Ultra-Low Standby current | Texas Instruments
Frequently Asked Questions
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What category does UCC24636DBVT fall under?
The UCC24636DBVT is listed under Semiconductors - ICs > Special Function.
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Is the UCC24636DBVT RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Farnell.
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Authorised distributors including Newark Electronics and Texas Instruments have stock available or on a lead time for UCC24636DBVT.
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