Texas Instruments UCC3895DW
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Output Type | PWM |
| Number of Outputs | 1 |
| Supplier Device Package | 20-SOIC |
| Output Configuration | Positive |
| Function | - |
| Topology | Phase-Shifted Full-Bridge |
| Voltage - Supply (Vcc/Vdd) | 10V ~ 16.5V |
| Control Features | Frequency Control, Soft Start, Sync |
| Frequency - Switching | 1MHz |
| Synchronous Rectifier | - |
| Serial Interfaces | - |
| Output Phases | 1 |
| Duty Cycle (Max) | 100% |
| Clock Sync | Yes |
| Package | Tube |
| Product Status | Active |
| Base Product Number | UCC3895 |
| REACH Status | REACH Unaffected |
| Standard Package | 25 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
UCC3895DW - Phase-Shifted Full-Bridge PWM Controller
The UCC3895DW is a high-performance phase-shifted full-bridge controller designed for advanced power supply systems. Operating with an input voltage range of 8V to 40V, it supports programmable output stages and adaptive dead-time control, enabling efficient power conversion in high-voltage applications. The device integrates a versatile PWM architecture with adjustable switching frequencies up to 1MHz, making it suitable for resonant and non-resonant topologies. Its robust design ensures reliable operation across industrial temperature ranges (-40°C to +85°C), catering to demanding environments such as telecom infrastructure and renewable energy systems.
UCC3895DW Key Features
The UCC3895DW excels in precision control, offering voltage-mode and current-mode operation with programmable soft-start and soft-stop functions. It features a bidirectional oscillator synchronization capability, allowing seamless integration into multi-module power systems. The controller includes advanced protection mechanisms such as cycle-by-cycle current limiting, undervoltage lockout (UVLO), and overcurrent detection. Unique to this IC is its adaptive delay matching technology, which minimizes switching losses and optimizes efficiency in high-frequency designs. Additionally, the device supports both voltage feedforward and feedback compensation, enhancing transient response in dynamic load conditions.
UCC3895DW Applications
This controller is widely adopted in high-power DC-DC converters, server and datacenter power supplies, and electric vehicle (EV) charging stations. It drives critical applications like industrial welding equipment, solar inverters, and uninterruptible power supplies (UPS). The UCC3895DW is particularly effective in LLC resonant converters for LED drivers and medical imaging systems, where precise voltage regulation and low EMI are paramount. Its ability to manage high-current transitions also makes it ideal for 5G base station power modules and aerospace power distribution units.
Similar/Alternative controller ic Models
1. UC3875DW (Texas Instruments): A legacy phase-shifted controller with 0-100% duty cycle control and 2MHz operation, but lacks adaptive delay matching and modern protection features.
2. LT3999IGN#PBF (Analog Devices): A 60V input resonant controller with integrated MOSFET drivers, offering 500kHz switching frequency and ±1% frequency accuracy. Optimized for compact designs.
3. NCP1399BDR2G (ON Semiconductor): A high-voltage resonant mode controller with brown-out protection and adjustable dead time, suitable for LCD TV power supplies and adapter applications.
4. IRS27952S (Infineon): A 600V half-bridge driver with integrated PFC controller, targeting server PSUs and EV charging but requires external PWM logic.
Selection Note
The UCC3895DW stands out for its adaptive delay control in high-frequency phase-shifted designs, outperforming the UC3875DW in efficiency optimization. For applications requiring integrated gate drivers, the LT3999IGN#PBF provides a more compact solution, while the IRS27952S is better suited for combined PFC and DC-DC stages. Designers should prioritize input voltage range, switching frequency requirements, and system complexity when selecting alternatives. The UCC3895DW remains the top choice for precision-controlled, high-power resonant converters in mission-critical industrial systems.
