UCC29950D
LTBHIGH EFFICIENCY CCM PFC/LLC COMBINATION CONTROLLER
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UCC29950D
LTBHIGH EFFICIENCY CCM PFC/LLC COMBINATION CONTROLLER
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Technical Specifications
Parameters and characteristics for this part
| Specification | UCC29950D |
|---|---|
| Frequency - Switching [Max] | 109 kHz |
| Frequency - Switching [Min] | 87 kHz |
| Mode | Continuous Conduction (CCM) |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 16-SOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Supplier Device Package | 16-SOIC |
| Voltage - Supply [Max] | 18 V |
| Voltage - Supply [Min] | 11 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 2.79 | |
| 10 | $ 2.51 | |||
| 40 | $ 2.37 | |||
| 120 | $ 2.02 | |||
| 280 | $ 1.89 | |||
| 520 | $ 1.66 | |||
| 1000 | $ 1.37 | |||
| 2520 | $ 1.28 | |||
| 5000 | $ 1.23 | |||
| Texas Instruments | TUBE | 1 | $ 2.47 | |
| 100 | $ 2.04 | |||
| 250 | $ 1.47 | |||
| 1000 | $ 1.10 | |||
Description
General part information
UCC29950 Series
The UCC29950 provides all the control functionality for an AC-to-DC converter with a CCM boost Power Factor Correction (PFC) stage followed by an LLC converter stage. The controller is optimized to allow ease of use.
Proprietary CCM PFC algorithms enable the system to achieve high efficiency, smaller converter size with high power factor. The integrated LLC controller enables a high-efficiency DC-to-DC conversion stage utilizing soft switching for low EMI noise. Integration of PFC control and LLC control in a combo controller allows the control algorithms to take advantage of information from both stages.
The controller includes a control circuit for start-up using a Depletion Mode MOSFET with internal device power management that minimizes external component requirements and helps lower system implementation costs.
Documents
Technical documentation and resources