The UCC28070 is an advanced power factor correction device that integrates two pulse-width modulators (PWMs) operating 180° out of phase. This interleaved PWM operation generates substantial reduction in the input and output ripple currents, and the conducted-EMI filtering becomes 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, low-distortion sinusoidal input line current.
The UCC28070 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 also contains a variety of protection features including output over-voltage detection, programmable peak-current limit, under-voltage lockout, and open-loop protection.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | UCC28070-Q1 Interleaving Continuous Conduction Mode PFC Controller. datasheet (Rev. A) | 30 Jun 2011 | |
| Application note | PFC Design Choice for On Board Charger Designs | 24 May 2018 | ||
| Application brief | Reducing Switching Losses in On-Board Chargers for Electric Vehicles | 27 Mar 2018 | ||
| Technical article | Hybrid electric vehicles and electric vehicles need different isolated DC/DCs to w | PDF | HTML | 27 Dec 2017 | |
| Technical article | Are you on-board? Demystifying EV charging systems | PDF | HTML | 31 Jul 2017 | |
| Application note | UCC28070 Implement Bridgeless PFC Pre-Regulator Design | 18 Jun 2009 |
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| Package | Pins | Download |
|---|---|---|
| TSSOP (PW) | 20 | View options |
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