Overview
The UC3875DWPTR is a Phase Shift Resonant Controller produced by Texas Instruments. This integrated circuit is designed to control full-bridge converters using phase-shifted control, enabling high-efficiency power conversion with constant-frequency pulse-width modulation and resonant, zero-voltage switching. The UC3875DWPTR is part of the UC3875 family, which is known for its robust control and drive signals necessary for implementing phase-shifted full-bridge converters.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | UC3875DWPTR |
| Package Type | SOIC (DW) |
| Number of Pins | 28 |
| Operating Temperature Range | 0 to 70°C |
| RoHS Compliance | Yes |
| Package Dimensions | Width: 7.5 mm, Length: 17.9 mm, Thickness: 2.35 mm |
| Lifecycle Status | Active (Recommended for new designs) |
Key Features
- Phase-shifted control for full-bridge converters
- Constant-frequency pulse-width modulation and resonant, zero-voltage switching
- Voltage- or current-mode control with user selection of peak- or average-current-mode control
- 150-µA startup current, UVLO lockout, 5-V reference, and soft-start functions
- High-speed logic-level drive section with output source/sink capability of 100-mA (peak)
- Adaptive delay set feature and internal-discharge transistor on the RAMP pin
Applications
The UC3875DWPTR is suitable for various high-efficiency power conversion applications, including:
- Offline and isolated DC/DC converters
- Full-bridge power supplies with phase-shifted control
- Resonant and zero-voltage switching power supplies
- High-frequency power supplies requiring constant-frequency pulse-width modulation
Q & A
- What is the UC3875DWPTR used for?
The UC3875DWPTR is used to control full-bridge converters using phase-shifted control, enabling high-efficiency power conversion. - What is the operating temperature range of the UC3875DWPTR?
The operating temperature range is 0 to 70°C. - Is the UC3875DWPTR RoHS compliant?
Yes, the UC3875DWPTR is RoHS compliant. - What are the package dimensions of the UC3875DWPTR?
The package dimensions are: Width: 7.5 mm, Length: 17.9 mm, Thickness: 2.35 mm. - What are the key features of the UC3875DWPTR?
The key features include phase-shifted control, constant-frequency PWM, resonant and zero-voltage switching, voltage- or current-mode control, and high-speed logic-level drive. - What are the typical applications of the UC3875DWPTR?
The typical applications include offline and isolated DC/DC converters, full-bridge power supplies, and high-frequency power supplies. - Is the UC3875DWPTR recommended for new designs?
Yes, the UC3875DWPTR is active and recommended for new designs. - What is the startup current of the UC3875DWPTR?
The startup current is 150 µA. - Does the UC3875DWPTR have UVLO lockout and soft-start functions?
Yes, it includes UVLO lockout and soft-start functions. - What is the output source/sink capability of the UC3875DWPTR?
The output source/sink capability is 100-mA (peak).
