UCC28070-Q1 Series
Two-phase Interleaved CCM PFC controller with Extended Frequency Range (10kHz to 300kHz)
Manufacturer: Texas Instruments
Catalog
Two-phase Interleaved CCM PFC controller with Extended Frequency Range (10kHz to 300kHz)
Key Features
• Qualified for Automotive ApplicationsInterleaved Average Current-Mode PWM Control withInherent Current MatchingAdvanced Current Synthesizer Current Sensing for Superior EfficiencyHighly-Linear Multiplier Output with Internal Quantized VoltageFeed-Forward Correction for Near-Unity PFProgrammable Frequency (30 kHz to 300 kHz)Programmable Maximum Duty-Cycle ClampProgrammable Frequency Dithering Rate and Magnitude forEnhanced EMI ReductionMagnitude: 3 kHz to 30 kHzRate: Up to 30 kHzExternal Clock Synchronization CapabilityEnhanced Load and Line Transient Response through Voltage AmplifierOutput Slew-Rate CorrectionProgrammable Peak Current LimitingBias-Supply UVLO, Over-Voltage Protection, Open-Loop Detection,and PFC-Enable MonitoringExternal PFC-Disable InterfaceOpen-Circuit Protection on VSENSE and VINAC pinsProgrammable Soft Start20-Lead TSSOP PackageQualified for Automotive ApplicationsInterleaved Average Current-Mode PWM Control withInherent Current MatchingAdvanced Current Synthesizer Current Sensing for Superior EfficiencyHighly-Linear Multiplier Output with Internal Quantized VoltageFeed-Forward Correction for Near-Unity PFProgrammable Frequency (30 kHz to 300 kHz)Programmable Maximum Duty-Cycle ClampProgrammable Frequency Dithering Rate and Magnitude forEnhanced EMI ReductionMagnitude: 3 kHz to 30 kHzRate: Up to 30 kHzExternal Clock Synchronization CapabilityEnhanced Load and Line Transient Response through Voltage AmplifierOutput Slew-Rate CorrectionProgrammable Peak Current LimitingBias-Supply UVLO, Over-Voltage Protection, Open-Loop Detection,and PFC-Enable MonitoringExternal PFC-Disable InterfaceOpen-Circuit Protection on VSENSE and VINAC pinsProgrammable Soft Start20-Lead TSSOP Package
Description
AI
The UCC28070A device is an extended-frequency-range derivative of the UCC28070 device, capable of operating at low switching frequencies desired for IGBT power-switch based PFC converters in high-power applications.
The UCC28070A device is capable of operating at frequencies from 10kHz to 300kHz, thus extending the range of operation compared to the UCC28070 device whose minimum operating frequency was limited to 30kHz. All the other features and benefits of the UCC28070 device are also available in the UCC28070A device. The 180° out-of-phase interleaved operation generates substantial reduction in input and output ripple currents and conducted EMI filtering becomes easier and less expensive.
Like the UCC28070 device, the UCC28070A device also features multiple innovations including current synthesis and quantized voltage feedforward to promote performance enhancements in PF, efficiency, THD, and transient response. Features including frequency dithering, clock synchronization, and slew rate enhancement further expand the potential performance enhancements. All protection features in the UCC28070 device such as output overvoltage detection, programmable peak-current limit, undervoltage lockout, and open-loop protection are available in the UCC28070A device as well.
The UCC28070A device is an extended-frequency-range derivative of the UCC28070 device, capable of operating at low switching frequencies desired for IGBT power-switch based PFC converters in high-power applications.
The UCC28070A device is capable of operating at frequencies from 10kHz to 300kHz, thus extending the range of operation compared to the UCC28070 device whose minimum operating frequency was limited to 30kHz. All the other features and benefits of the UCC28070 device are also available in the UCC28070A device. The 180° out-of-phase interleaved operation generates substantial reduction in input and output ripple currents and conducted EMI filtering becomes easier and less expensive.
Like the UCC28070 device, the UCC28070A device also features multiple innovations including current synthesis and quantized voltage feedforward to promote performance enhancements in PF, efficiency, THD, and transient response. Features including frequency dithering, clock synchronization, and slew rate enhancement further expand the potential performance enhancements. All protection features in the UCC28070 device such as output overvoltage detection, programmable peak-current limit, undervoltage lockout, and open-loop protection are available in the UCC28070A device as well.