UCC27223 Series

High-Efficiency Predictive synchronous buck driver with dead time control

Catalog

High-Efficiency Predictive synchronous buck driver with dead time control

Part	Input Type	Current - Peak Output (Source, Sink) [custom]	Current - Peak Output (Source, Sink) [custom]	Package / Case	Package / Case [y]	Package / Case [x]	Gate Type	Driven Configuration	Logic Voltage - VIL, VIH [custom]	Logic Voltage - VIL, VIH [custom]	Voltage - Supply [Max]	Voltage - Supply [Min]	Number of Drivers	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Supplier Device Package	Rise / Fall Time (Typ) [custom]	Rise / Fall Time (Typ) [custom]	Channel Type
Texas Instruments UCC27223PWP	Non-Inverting	4 A	4 A	14-PowerTSSOP	4.4 mm	0.173 in	N-Channel MOSFET	Half-Bridge	2.25 V	1.55 V	20 V	3.7 V	2	105 °C	-40 °C	Surface Mount	14-HTSSOP	17 ns	17 ns	Synchronous
Texas Instruments UCC27223PWPR	Non-Inverting	4 A	4 A	14-PowerTSSOP	4.4 mm	0.173 in	N-Channel MOSFET	Half-Bridge	2.25 V	1.55 V	20 V	3.7 V	2	105 °C	-40 °C	Surface Mount	14-HTSSOP	17 ns	17 ns	Synchronous

Catalog

High-Efficiency Predictive synchronous buck driver with dead time control

Key Features

• Maximizes Efficiency by Minimizing Body-Diode Conduction and Reverse Recovery LossesTransparent Synchronous Buck Gate Drive Operation From the Single Ended PWM Input Signal12-V or 5-V Input Operation3.3-V Input Operation With Availability of 12-V Bus BiasHigh-Side and Low-Side ±3-A Dual DriversOn-Board 6.5-V Gate Drive Regulator±3-A TrueDrive™ Gate Drives for High Current Delivery at MOSFET Miller ThresholdsAutomatically Adjusts for Changing Operating ConditionsThermally Enhanced 14-Pin PowerPAD™ HTSSOP Package Minimizes Board Area and Junction Temperature RiseAPPLICATIONSMultiphase Converters in Combination With the TPS40090Non-Isolated 3.3-V, 5-V and 12-V Input dc-to-dc Converters for Processor Power, General Computer, Telecom and Datacom ApplicationsPredictive Gate Drive™ and PowerPAD™ are trademarks of Texas Instruments Incorporated.Maximizes Efficiency by Minimizing Body-Diode Conduction and Reverse Recovery LossesTransparent Synchronous Buck Gate Drive Operation From the Single Ended PWM Input Signal12-V or 5-V Input Operation3.3-V Input Operation With Availability of 12-V Bus BiasHigh-Side and Low-Side ±3-A Dual DriversOn-Board 6.5-V Gate Drive Regulator±3-A TrueDrive™ Gate Drives for High Current Delivery at MOSFET Miller ThresholdsAutomatically Adjusts for Changing Operating ConditionsThermally Enhanced 14-Pin PowerPAD™ HTSSOP Package Minimizes Board Area and Junction Temperature RiseAPPLICATIONSMultiphase Converters in Combination With the TPS40090Non-Isolated 3.3-V, 5-V and 12-V Input dc-to-dc Converters for Processor Power, General Computer, Telecom and Datacom ApplicationsPredictive Gate Drive™ and PowerPAD™ are trademarks of Texas Instruments Incorporated.

Description

The UCC27223 is a high-speed synchronous buck drivers for today’s high-efficiency, lower-output voltage designs. Using Predictive Gate Drive™ (PGD) control technology, these drivers reduce diode conduction and reverse recovery losses in the synchronous rectifier MOSFET(s). The UCC27223 includes an enable pin that controls the operation of both outputs. A logic latch is also included to keep both outputs low until the first PWM input pulse comes in. The RDS(on) of the SR pull-down sourcing device is also minimized for higher frequency operations. This closed loop feedback system detects body-diode conduction, and adjusts deadtime delays to minimize the conduction time interval. This virtually eliminates body-diode conduction while adjusting for temperature, load- dependent delays, and for different MOSFETs. Precise gate timing at the nanosecond level reduces the reverse recovery time of the synchronous rectifier MOSFET body-diode, reducing reverse recovery losses seen in the main (high-side) MOSFET. The lower junction temperature in the low-side MOSFET increases product reliability. Since the power dissipation is minimized, a higher switching frequency can also be used, allowing for smaller component sizes. The UCC27223 is offered in the thermally enhanced 14-pin PowerPAD™ package with 2°C/Wjc. The UCC27223 is a high-speed synchronous buck drivers for today’s high-efficiency, lower-output voltage designs. Using Predictive Gate Drive™ (PGD) control technology, these drivers reduce diode conduction and reverse recovery losses in the synchronous rectifier MOSFET(s). The UCC27223 includes an enable pin that controls the operation of both outputs. A logic latch is also included to keep both outputs low until the first PWM input pulse comes in. The RDS(on) of the SR pull-down sourcing device is also minimized for higher frequency operations. This closed loop feedback system detects body-diode conduction, and adjusts deadtime delays to minimize the conduction time interval. This virtually eliminates body-diode conduction while adjusting for temperature, load- dependent delays, and for different MOSFETs. Precise gate timing at the nanosecond level reduces the reverse recovery time of the synchronous rectifier MOSFET body-diode, reducing reverse recovery losses seen in the main (high-side) MOSFET. The lower junction temperature in the low-side MOSFET increases product reliability. Since the power dissipation is minimized, a higher switching frequency can also be used, allowing for smaller component sizes. The UCC27223 is offered in the thermally enhanced 14-pin PowerPAD™ package with 2°C/Wjc.