Catalog(3 parts)
| Part | Supplier Device Package | Output Isolation | Fault Protection | Voltage - Start Up▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Frequency - Switching▲▼ | Topology | Operating Temperature▲▼ | Operating Temperature▲▼ | Package / Case | Package / Case▲▼ | Mounting Type | Internal Switch(s)▲▼ | Voltage - Input▲▼ | Voltage - Input▲▼ | Supplied Contents | Main Purpose | Current - Output▲▼ | Regulator Topology | Voltage - Output▲▼ | Outputs and Type | Outputs and Type▲▼ | Board Type | Utilized IC / Part |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
16-SOIC | Isolated | Over Current, Over Temperature, Over Voltage, Short Circuit | 17.5 V | 12 V | 34 V | 1000000 Hz | Flyback | 125 °C | -40 °C | 16-SOIC | 0.003911599982529879 m, 3.900000095367432 ul | Surface Mount | |||||||||||||
Texas Instruments UCC28780EVM-021UCC24612, UCC28780 - AC/DC, Primary and Secondary Side 1, Isolated Outputs Evaluation Board | 264 Vrms | 90 Vrms | Board(s) | AC/DC, Primary and Secondary Side | 2.25 A | Flyback | 20 V | Isolated | 1 ul | Fully Populated | UCC24612, UCC28780 | ||||||||||||||
16-WQFN (3x3) | Isolated | Over Current, Over Temperature, Over Voltage, Short Circuit | 17.5 V | 12 V | 34 V | 1000000 Hz | Flyback | 125 °C | -40 °C | 16-WFQFN Exposed Pad | Surface Mount |
Key Features
• Full and Partial Zero Voltage Switching (ZVS) of Primary FET with Adaptive ControlProgrammable Timing for External Si or GaN FETsHigh Switching Frequency up to 1 MHzProgrammable Adaptive Burst Control and Standby Mode for Light-Load Efficiency with Low Output Ripple and Audible Noise MitigationBrownout Detection without Direct Line SensingAccurate Programmable Over-Power Protection (OPP) to Support Peak Power ModeFault Protections: Over-Temperature, Output Over-Voltage, Output Short-Circuit, Over-Current, and Pin FaultDirect Interface with Optocoupler Based Feedback Allows for Dynamically Scalable Output VoltageInternal Soft StartNTC Thermistor Interface with External EnableFull and Partial Zero Voltage Switching (ZVS) of Primary FET with Adaptive ControlProgrammable Timing for External Si or GaN FETsHigh Switching Frequency up to 1 MHzProgrammable Adaptive Burst Control and Standby Mode for Light-Load Efficiency with Low Output Ripple and Audible Noise MitigationBrownout Detection without Direct Line SensingAccurate Programmable Over-Power Protection (OPP) to Support Peak Power ModeFault Protections: Over-Temperature, Output Over-Voltage, Output Short-Circuit, Over-Current, and Pin FaultDirect Interface with Optocoupler Based Feedback Allows for Dynamically Scalable Output VoltageInternal Soft StartNTC Thermistor Interface with External Enable
Description
AI
UCC28780 is a high-frequency active-clamp flyback controller that enables high-density AC-to-DC power supplies that comply with stringent global efficiency standards such as DoE Level VI and EU CoC V5 Tier-2. User programmable advanced control law features allow performance to be optimized for both Silicon (Si) and Gallium Nitride (GaN) power FETs. Direct operation with switching devices that combine driver and GaN FETs is further enhanced with logic-level gate signals and enable outputs.
Zero voltage switching (ZVS) is achieved over a wide operating range with advanced auto-tuning techniques, adaptive dead-time optimization, and variable switching frequency control law. Using adaptive multimode control that changes the operation based on input and output conditions, UCC28780 enables high efficiency while mitigating audible noise. With a variable switching frequency of up to 1 MHz and accurate programmable over-power protection, which provides consistent power for thermal design across wide line range, the size of passive components can be further reduced and enable high power density.
UCC28780 works with VDS-sensing synchronous rectifier controllers, such asUCC24612, to achieve higher conversion efficiency and very compact designs.
UCC28780 is a high-frequency active-clamp flyback controller that enables high-density AC-to-DC power supplies that comply with stringent global efficiency standards such as DoE Level VI and EU CoC V5 Tier-2. User programmable advanced control law features allow performance to be optimized for both Silicon (Si) and Gallium Nitride (GaN) power FETs. Direct operation with switching devices that combine driver and GaN FETs is further enhanced with logic-level gate signals and enable outputs.
Zero voltage switching (ZVS) is achieved over a wide operating range with advanced auto-tuning techniques, adaptive dead-time optimization, and variable switching frequency control law. Using adaptive multimode control that changes the operation based on input and output conditions, UCC28780 enables high efficiency while mitigating audible noise. With a variable switching frequency of up to 1 MHz and accurate programmable over-power protection, which provides consistent power for thermal design across wide line range, the size of passive components can be further reduced and enable high power density.
UCC28780 works with VDS-sensing synchronous rectifier controllers, such asUCC24612, to achieve higher conversion efficiency and very compact designs.