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Details for UCC28070PWR by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
PFC CONTROLLER CCM 21V TSSOP-20
UCC28070PWR image

UCC28070PWR by Texas Instruments

PFC CONTROLLER CCM 21V TSSOP-20
Features
Advanced Current Synthesizer Current Sensing for Superior Efficiency
Bias-Supply UVLO, Overvoltage Protection, Open- Loop Detection, and PFC-Enable Monitoring
Enhanced Load and Line Transient Response through Voltage Amplifier Output Slew-Rate Correction
External PFC-Disable Interface
External-Clock Synchronization Capability
Highly-Linear Multiplier Output With Internal Quantized Voltage Feed-Forward Correction for Near-Unity PF
Interleaved Average Current-Mode PWM Control With Inherent Current Matching
Open-Circuit Protection on VSENSE and VINAC pins
Programmable Frequency from 30 kHz to 300 kHz
Programmable Frequency-Dithering Rate and Magnitude for Enhanced EMI Reduction u2013 Magnitude: 3 kHz to 30 kHz u2013 Rate: Up to 30 kHz
Programmable Maximum Duty-Cycle Clamp
Programmable Peak Current Limiting
Programmable Soft-Start
Part Information
UCC28070PWR image
RoHS Compliant
Description
The UCC28070 is an advanced power factor correction (PFC) device that integrates two pulsewidth modulators (PWMs) operating 180° out of phase. This interleaved PWM operation generates substantial reduction in the input and output ripple currents, allowing the conducted-EMI filtering to become easier and less expensive. A significantly improved multiplier design provides a shared current reference to two independent current amplifiers that ensures matched average-current mode control in both PWM outputs while maintaining a stable, lowdistortion, sinusoidal input-line current. The UCC28070 device contains multiple innovations including current synthesis and quantized voltage feed-forward 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. The UCC28070 device also contains a variety of protection features including output-overvoltage detection, programmable peak-current limit, undervoltage lockout, and open-loop protection.
Specifications
UVLO:
10.2V
Supply Voltage Min:
11.2V
Supply Voltage Max:
21V
Startup Current:
20mA
Operating Supply Current:
20mA
Controller IC Case Style:
TSSOP
No. of Pins:
20Pins
Duty Cycle (%):
95%
Frequency:
0.3MHz
Operating Temperature Min:
-40°C
Operating Temperature Max:
125°C
Product Range:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 3 - 168 hours
SVHC:
No SVHC (27-Jun-2018)
Alternate Descriptions
Power Factor Correction CONTRLR 20mA 30KHz to 300KHz 20-Pin TSSOP T/R Avnet America
Power Factor Correction CONTRLR 20mA 30KHz to 300KHz 20-Pin TSSOP T/R Avnet Europe