Mounting Style
: SMD/SMT
Packaging
: Tube
Maximum Operating Temperature
: + 125 C
Switching Frequency
: 10 KHz to 300 KHz
Maximum Power Dissipation
: 800 mW
Package / Case
: TSSOP-20
Features: ` Interleaved Average Current-Mode PWM Control with Inherent Current Matching
` Advanced Current Synthesizer Current Sensing for Superior Efficiency and PF
` Highly-Linear Multiplier Output with Internal Quantized Voltage Feed-Forward Correction for Near-Unity PF
` Programmable Frequency (up to 300 kHz)
` Programmable Maximum Duty-Cycle Clamp
` Programmable Frequency Dithering Rate and Magnitude for Enhanced EMI Reduction
Magnitude: Up to 30 kHz
Rate: Up to 30 kHz
` External Clock Synchronization Capability
` Enhanced Load and Line Transient Response through Voltage Amplifier Output Slew-Rate Correction
` Programmable Peak Current Limiting
` Bias-Supply UVLO, Over-Voltage Protection,Open-Loop Detection, and PFC-Enable Monitoring
` External PFC-Disable Interface
` Open-Circuit Protection on VSENSE and VINAC pins
` Programmable Soft Start
` 20-Lead TSSOP PackageApplication· High-Efficiency Server and Desktop Power Supplies
· Telecom RectifiersPinout
DescriptionThe UCC28070 is an advanced power factor correction device that integrates two pulse-width TmhoisduNlaatotursral(PInWteMrlse)avoepderPatWinMg 1o8p0e°ratoiount ogfenpehraastees.
substantial reduction in the input and output ripple currents, and the conducted-EMI filtering becomes easier and less expensive. A significantly improved moulttwipolieirnddeepsiegnndepnrotvciduersreantshaamrpeldifiecursrrethnat treefenrseunrcees 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 of UCC28070 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, in-rush current detection, under-voltage lockout, and open-loop protection.
Parameters: | Technical/Catalog Information | UCC28070PW |
| Vendor | Texas Instruments |
| Category | Integrated Circuits (ICs) |
| Packaging | Tube |
| Package / Case | 20-TSSOP |
| Voltage - Supply | 10.2 V ~ 21 V |
| Mode | Continuous Conduction (CCM) |
| Frequency - Switching | 300kHz |
| Current - Startup | 20mA |
| Operating Temperature | -40°C ~ 125°C |
| Drawing Number | * |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | UCC28070PW
UCC28070PW
296 23629 5 ND
296236295ND
296-23629-5
|
UCC28070PW Data Sheet
