UCC24636DBVR
ActiveSYNCHRONOUS RECTIFIER CONTROLLER WITH ULTRA-LOW STANDBY CURRENT
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UCC24636DBVR
ActiveSYNCHRONOUS RECTIFIER CONTROLLER WITH ULTRA-LOW STANDBY CURRENT
Technical Specifications
Parameters and characteristics for this part
| Specification | UCC24636DBVR |
|---|---|
| Applications | Synchronous Rectifier, Secondary-Side Controller |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 C |
| Package / Case | SOT-23-6 |
| Supplier Device Package | SOT-23-6 |
| Voltage - Supply [Max] | 28 V |
| Voltage - Supply [Min] | 3.6 V |
| Part | Mounting Type | Voltage - Supply [Max] | Voltage - Supply [Min] | Package / Case | Supplier Device Package | Applications | Operating Temperature [Max] | Operating Temperature [Min] |
|---|---|---|---|---|---|---|---|---|
Texas Instruments | Surface Mount | 28 V | 3.6 V | SOT-23-6 | SOT-23-6 | Secondary-Side Controller Synchronous Rectifier | 125 °C | -40 C |
Texas Instruments | Surface Mount | 28 V | 3.6 V | SOT-23-6 | SOT-23-6 | Secondary-Side Controller Synchronous Rectifier | 125 °C | -40 C |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 1.29 | |
| 10 | $ 1.15 | |||
| 25 | $ 1.09 | |||
| 100 | $ 0.90 | |||
| 250 | $ 0.84 | |||
| 500 | $ 0.74 | |||
| 1000 | $ 0.59 | |||
| Digi-Reel® | 1 | $ 1.29 | ||
| 10 | $ 1.15 | |||
| 25 | $ 1.09 | |||
| 100 | $ 0.90 | |||
| 250 | $ 0.84 | |||
| 500 | $ 0.74 | |||
| 1000 | $ 0.59 | |||
| N/A | 3593 | $ 1.38 | ||
| Tape & Reel (TR) | 3000 | $ 0.55 | ||
| 6000 | $ 0.52 | |||
| 15000 | $ 0.50 | |||
| Texas Instruments | LARGE T&R | 1 | $ 0.87 | |
| 100 | $ 0.72 | |||
| 250 | $ 0.51 | |||
| 1000 | $ 0.39 | |||
Description
General part information
UCC24636 Series
The UCC24636 SR is a compact, 6-pin secondary-side 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 110µA 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.
The UCC24636 SR is a compact, 6-pin secondary-side 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.
Documents
Technical documentation and resources