UCC28782 Series

High-density flyback controller for active-clamp (ACF) and zero-voltage switching (ZVS) topologies

Catalog

High-density flyback controller for active-clamp (ACF) and zero-voltage switching (ZVS) topologies

Part	Utilized IC / Part	Secondary Attributes	Supplied Contents	Type	Function	Mounting Type	Output Isolation	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Operating Temperature [Min]	Operating Temperature [Max]	Topology	Fault Protection	Supplier Device Package	Package / Case	Control Features	Voltage - Start Up
Texas Instruments UCC28782EVM-030	UCC28782	On-Board Test Points	Board(s)	Power Management	USB PD Controller (Power Delivery)
Texas Instruments UCC28782ARTWT						Surface Mount	Isolated	14 V	34 V	-40 °C	125 ¯C	Flyback	Current Limiting Over Temperature Over Voltage Short Circuit	24-WQFN (4x4)	24-WFQFN Exposed Pad
Texas Instruments UCC28782BDLRTWR						Surface Mount	Isolated	14 V	34 V	-40 °C	125 ¯C	Boost Flyback	Current Limiting Over Temperature Over Voltage Short Circuit	24-WQFN (4x4)	24-WFQFN Exposed Pad	Soft Start	17 V
Texas Instruments UCC28782CDRTWR						Surface Mount	Isolated	14 V	34 V	-40 °C	125 ¯C	Boost Flyback	Current Limiting Over Temperature Over Voltage Short Circuit	24-WQFN (4x4)	24-WFQFN Exposed Pad	Soft Start	17 V
Texas Instruments UCC28782ARTWR						Surface Mount	Isolated	14 V	34 V	-40 °C	125 ¯C	Flyback	Current Limiting Over Temperature Over Voltage Short Circuit	24-WQFN (4x4)	24-WFQFN Exposed Pad

Catalog

High-density flyback controller for active-clamp (ACF) and zero-voltage switching (ZVS) topologies

Key Features

• Active clamp recovers leakage inductance energyAdaptive control for fast zero voltage switching (ZVS) tracking and dead time optimizationIntegrated switching bias regulator supports USB Type-C PD wide output voltage range with one auxiliary windingEMI frequency dithering without trade-offs on transient response or audible noiseDynamic bias power management for digital isolator and GaN driverProgrammable Adaptive Burst Mode (ABM) with internal compensationActive X-capacitor (X-cap) dischargeOver-temperature, over-voltage, output short-circuit, over-current, over-power, and pin-fault protectionsAuto-recovery and group-latch fault options with fast latch-reset capability4x4-mm 24-pin QFN packageActive clamp recovers leakage inductance energyAdaptive control for fast zero voltage switching (ZVS) tracking and dead time optimizationIntegrated switching bias regulator supports USB Type-C PD wide output voltage range with one auxiliary windingEMI frequency dithering without trade-offs on transient response or audible noiseDynamic bias power management for digital isolator and GaN driverProgrammable Adaptive Burst Mode (ABM) with internal compensationActive X-capacitor (X-cap) dischargeOver-temperature, over-voltage, output short-circuit, over-current, over-power, and pin-fault protectionsAuto-recovery and group-latch fault options with fast latch-reset capability4x4-mm 24-pin QFN package

Description

The UCC28782 is a high-density active-clamp flyback (ACF) controller for USB Type C™ PD applications and allows for efficiencies over 93% by recovering the leakage inductance energy and adaptive ZVS tracking over the full load range. With a maximum frequency of 1.5 MHz the magnetics can be minimized. Frequency dithering helps to improve EMI margin. The UCC28782 also integrates dynamic bias power management to optimize the gate drive for Si or GaN MOSFETs. Adaptive Burst Mode (ABM) combined with Low Power Mode (LPM) and Standby Power mode (SBP) work together to increase light-load efficiency while reducing ripple and audible noise. The UCC28782 also integrates an X-Cap discharge function to discharge the residual input voltage when power is removed. The UCC28782 has multiple protection modes and options for retry or latch-off responses depending on the application needs. See Device Comparison Table. The UCC28782 is a high-density active-clamp flyback (ACF) controller for USB Type C™ PD applications and allows for efficiencies over 93% by recovering the leakage inductance energy and adaptive ZVS tracking over the full load range. With a maximum frequency of 1.5 MHz the magnetics can be minimized. Frequency dithering helps to improve EMI margin. The UCC28782 also integrates dynamic bias power management to optimize the gate drive for Si or GaN MOSFETs. Adaptive Burst Mode (ABM) combined with Low Power Mode (LPM) and Standby Power mode (SBP) work together to increase light-load efficiency while reducing ripple and audible noise. The UCC28782 also integrates an X-Cap discharge function to discharge the residual input voltage when power is removed. The UCC28782 has multiple protection modes and options for retry or latch-off responses depending on the application needs. See Device Comparison Table.