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Details for UCC24636DBVT by Texas Instruments
Semiconductors - ICs > Special Function >
SYNC RECTIFIER CONTROLLER SOT-23-6
UCC24636DBVT image

UCC24636DBVT by Texas Instruments

SYNC RECTIFIER CONTROLLER SOT-23-6
Features
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
Part Information
UCC24636DBVT image
RoHS Compliant
Description
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.
Specifications
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
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 2 - 1 year
SVHC:
No SVHC (27-Jun-2018)
Alternate Descriptions
MOSFET DRVR 1A 1-OUT Hi/Lo Side Non-Inv 6-Pin SOT-23 Avnet America
MOSFET DRVR 1A 1-OUT Hi/Lo Side Non-Inv 6-Pin SOT-23 Avnet Europe