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UCC28742DBVR / SOT-23-6 / Power Management ICs
Description
The UCC28742 off-line flyback controller is a highly integrated, 6-pin secondary-side regulated PWM controller for efficient AC-to-DC power supplies. It is an isolated-flyback power-supply controller that provides Constant-Voltage (CV) using an optical coupler to improve transient response to large-load steps. This device processes information from optocoupled feedback and an auxiliary flyback winding for high-performance control of output voltage and current.
The UCC28742 employs advanced control algorithms to achieve high operating efficiency and performance. The drive output interfaces to a MOSFET power switch. Discontinuous conduction mode (DCM) with valley-switching reduces switching losses. Modulation of switching frequency and primary current-peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.
The controller has a maximum switching frequency of 80 kHz and always maintains control of the peakprimary current in the transformer. A minimum switching frequency of 200 Hz facilitates the achievement of low no-load input power
| Product Attribute | Attribute Value |
|---|---|
| Texas Instruments | |
| Product Category: | Switching Controllers |
| Flyback | |
| 1 Output | |
| 130 kHz | |
| 99 % | |
| 9 V to 35 V | |
| 5 V | |
| 2 A | |
| - 40 C | |
| + 125 C | |
| SMD/SMT | |
| SOT-23-6 | |
| Reel | |
| Cut Tape | |
| MouseReel | |
| Brand: | Texas Instruments |
| Description/Function: | High-Efficiency Flyback Controller |
| Development Kit: | UCC28742EVM-001 |
| Isolation: | Isolated |
| Operating Supply Current: | 1.8 mA |
| Output Power: | 10 W |
| Product: | Off-Line Controllers |
| Product Type: | Switching Controllers |
| Series: | UCC28742 |
| Shutdown: | Shutdown |
| Factory Pack Quantity: | 3000 |
| Subcategory: | PMIC - Power Management ICs |
| Unit Weight: | 0.000670 oz |
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