UCC28070PWR Part Information
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.
- 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
|Supply Voltage Min||11.2V|
|Supply Voltage Max||21V|
|Operating Supply Current||20mA|
|Controller IC Case Style||TSSOP|
|No. of Pins||20Pins|
|Duty Cycle (%)||95%|
|Operating Temperature Min||-40°C|
|Operating Temperature Max||125°C|
|RoHS Phthalates Compliant||Yes|
|MSL||MSL 3 - 168 hours|
|SVHC||No SVHC (27-Jun-2018)|
Alternative Part Descriptions
- PFC CONTROLLER, CCM, 21V, TSSOP-20; 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%; RoHS Compliant: Yes | Newark Electronics
- Two-phase Interleaved continuous conduction mode (CCM) PFC controller | Texas Instruments
Frequently Asked Questions
Where can I find additional details, specifications and documents for a UCC28070PWR?
Additional datasheets, footprints and schematics for UCC28070PWR are listed in our Part Details tab. You can also find the UCC28070PWR image and similar parts on this details page.
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What category does UCC28070PWR fall under?
The UCC28070PWR is listed under Electronic & Electrical Components > Semiconductors - ICs > Power Management.
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You can view similar parts to UCC28070PWR when available in the Power Management range under the specifications section at the bottom of the details page.
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Is the UCC28070PWR RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Farnell.
Which authorised distributors for UCC28070PWR have stock available?
Authorised distributors including Newark Electronics and Texas Instruments have stock available or on a lead time for UCC28070PWR.
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