UCC3895QG3

DC DC Switching Controllers Overview

The UCC3895QG3 is a BiCMOS Advanced Phase-Shift PWM Controller manufactured by Texas Instruments. It supports switching frequencies up to 1 MHz and provides four output drivers with a maximum current of 100 mA. The device operates within a supply voltage range of 9 V to 16.5 V and functions reliably across an operating temperature range of 0°C to +70°C. It utilizes a 20-pin PLCC package for surface-mount installation, featuring dimensions of 8.96 mm x 8.96 mm x 4.06 mm.

DC DC Switching Controllers Feature Summary

• Implements phase-shift control for full-bridge power converters to enable zero-voltage switching at high frequencies.
• Supports voltage mode, peak current mode, and average current mode control architectures.
• Features programmable soft-start, soft-stop, and chip disable functionality via a single pin.
• Includes adaptive delay setting and bidirectional oscillator synchronization capabilities.

DC DC Switching Controllers Applications

• Phase-shifted full-bridgetopology DC/DC converters
• Offline power supplies
• Telecommunications equipment power systems
• Distributed power architecture modules

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'Q' indicates automotive qualification requirements when sourcing this component. Confirm that the PLCC package variant matches the intended PCB footprint design. Ensure the operating temperature range aligns with the target application environment specifications before finalizing procurement decisions.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring efficient high-frequency operation with zero-voltage switching capabilities. Consider its support for multiple control modes and adaptive delay features when designing complex power conversion stages. Evaluate the 100 mA output drive capability against the gate charge requirements of the external power switches in the circuit design.

DC DC Switching Controllers Part Context

The UCC3895 series represents an evolution of the UC3875/6/7/8 family, offering improved control logic and lower bias currents due to BiCMOS construction. The UCC3895QG3 specifically denotes the qualified version of this advanced phase-shift PWM controller, maintaining compatibility with standard full-bridge converter designs while providing enhanced performance characteristics.

DC DC Switching Controllers Replacement Considerations

The UCC3895N and UCC3895DW are direct functional equivalents within the same product family, differing primarily in packaging type rather than electrical performance. Verify pinout compatibility when substituting between PLCC, PDIP, and SOIC packages to ensure proper integration into existing hardware layouts.