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Partno Mfg Dc Qty AvailableDescript
UCC28070DWRTIN/a3310avaiTwo-Phase Interleaved CCM PFC Controller 20-SOIC -40 to 85
UCC28070PWG4TEXASN/a83avaiTwo-Phase Interleaved CCM PFC Controller 20-TSSOP -40 to 125
UCC28070PWRN/A N/a1avaiTwo-Phase Interleaved CCM PFC Controller 20-TSSOP -40 to 125


UCC28070DWR ,Two-Phase Interleaved CCM PFC Controller 20-SOIC -40 to 85Features 3 DescriptionThe UCC28070 is an advanced power factor1• Interleaved Average Current-Mode P ..
UCC28070PWG4 ,Two-Phase Interleaved CCM PFC Controller 20-TSSOP -40 to 125features including output-overvoltagedetection, programmable peak-current limit,• Bias-Supply UVLO, ..
UCC28070PWR ,Two-Phase Interleaved CCM PFC Controller 20-TSSOP -40 to 125Pin Functions (continued)PINI/O DESCRIPTIONNAME NO.Current Synthesis Down-Slope Programming. Connec ..
UCC2807-3 ,Programmable Maximum Duty Cycle PWM Controllerfeatures internal full cycle soft start and internalCurrent Sense Signal l . . .eading edge blankin ..
UCC2807D-1 ,1FEATURES DESCRIPTION. User Programmable Maximum PWM The UCC3807 family of high speed, low power int ..
UCC2807D-1 ,1ELECTRICAL CHARACTERISTICS: Unless otherwise stated these specifications apply for TA = -55oC to +1 ..
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UPA102G ,Ultra-high-frequency NPN transistor arrayapplicationsinclude: pulse pattern generators, oscillators, differential amps, high speed comparato ..
UPA102G-E1 ,Ultra-high-frequency NPN transistor arrayFEATURES• TWO BUILT-IN DIFFERENTIAL AMPLIFIER CIRCUITS: (Each Transistor has fT 9 GHz)• OUTSTANDING ..
UPA103G ,HIGH FREQUENCY NPN TRANSISTOR ARRAYFEATURES• FIVE MONOLITHIC 9 GHz fT TRANSISTORS:Two of these use a common emitter pin and can be use ..
UPA103G-E1 ,HIGH FREQUENCY NPN TRANSISTOR ARRAYFEATURES• FIVE MONOLITHIC 9 GHz fT TRANSISTORS:Two of these use a common emitter pin and can be use ..
UPA103G-E1 ,HIGH FREQUENCY NPN TRANSISTOR ARRAYAPPLICATIONSThe μPA103 is a user configurable Silicon bipolar transistor array consisting of a comm ..


UCC28070DWR-UCC28070PWG4-UCC28070PWR
Two-Phase Interleaved CCM PFC Controller 20-TSSOP -40 to 125
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UCC28070

SLUS794F –NOVEMBER 2007–REVISED APRIL 2016
UCC28070 Interleaving Continuous Conduction Mode PFC Controller Features
Interleaved Average Current-Mode PWM Control
With Inherent Current Matching Advanced Current Synthesizer Current Sensing
for Superior Efficiency Highly-Linear Multiplier Output With Internal
Quantized Voltage Feed-Forward Correctionfor
Near-Unity PF Programmable Frequency from30 kHzto 300 kHz Programmable Maximum Duty-Cycle Clamp Programmable Frequency-Dithering Rate and
Magnitude for Enhanced EMI Reduction Magnitude:3 kHzto30 kHz Rate: Upto 30 kHz External-Clock Synchronization Capability Enhanced Load and Line Transient Response
through Voltage Amplifier Output Slew-Rate
Correction Programmable Peak Current Limiting Bias-Supply UVLO, Overvoltage Protection, Open-
Loop Detection, and PFC-Enable Monitoring External PFC-Disable Interface Open-Circuit Protectionon VSENSE and VINAC
pins Programmable Soft-Start Applications High-Efficiency Server and Desktop Power
Supplies Telecom Rectifiers White Goods and Industrial Equipment Description
The UCC28070 is an advanced power factor
correction (PFC) device that integrates two pulse-
width modulators (PWMs) operating 180° out of
phase. This interleaved PWM operation generates
substantial reductionin the input and output ripple
currents, allowing the conducted-EMI filtering to
become easier and less expensive.A significantly
improved multiplier design providesa shared current
referenceto two independent current amplifiers that
ensures matched average-current mode controlin
both PWM outputs while maintaininga stable, low-
distortion, sinusoidal input-line current.
The UCC28070 device contains multiple innovations
including current synthesis and quantized voltage
feed-forwardto promote performance enhancements PF, efficiency, THD, and transient response.
Features including frequency dithering, clock
synchronization, and slew rate enhancement further
expand the potential performance enhancements.
The UCC28070 device also containsa variety of
protection features including output-overvoltage
detection, programmable peak-current limit,
undervoltage lockout, and open-loop protection.
Device Information(1)

(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Simplified Application Diagram
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