| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
2,422 pcs
|
2422 pcs | On Request | 1 | On Request | On Request | 21+ | On Request | On Request | |
|
2,018 pcs
|
2018 pcs | On Request | 1 | On Request | On Request | 20+ | On Request | On Request | |
|
1,718 pcs
|
1718 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
192 pcs
|
192 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
77 pcs
|
77 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The UCC28070PWR from Texas Instruments is an active PFC controller designed for applications exceeding 750W. It utilizes a two-phase interleaved continuous conduction mode (CCM) control strategy, offering inherent current matching and superior efficiency through advanced current-synthesizer current sensing.
This device supports an adjustable switching frequency, programmable from 30kHz to 300kHz, with options for frequency dithering to reduce EMI. Key features include a programmable maximum duty-cycle clamp, programmable soft-start, and programmable peak current limiting. It also provides an external PFC-disable interface and comprehensive protection features such as bias-supply UVLO, output overvoltage detection, and open-loop detection.
The UCC28070PWR is housed in a 20-TSSOP package, suitable for surface mounting. Its operating temperature range is -40°C to 125°C, making it robust for various environmental conditions. The controller operates within a voltage range of 11.2V to 21V, with a typical current consumption of 20mA.
This PFC controller is well-suited for power supplies requiring high power factor correction, enhanced transient response, and synchronization capability to an external clock. Its design facilitates near-unity power factor through internal quantized voltage feed-forward.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.75 | $0.75 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operating temperature range is -40°C to 125°C.
The UCC28070PWR is supplied in a 20-TSSOP package.
The voltage range is 11.2V to 21V.
The UCC28070PWR uses Continuous Conduction Mode (CCM).
The maximum duty cycle is 99%.
The programmable switching frequency range is 30kHz to 300kHz.
Protections include bias-supply UVLO, output overvoltage, open‑loop detection, open-circuit detection on VSENSE and VINAC, and PFC-enable monitoring.