UC2856DWG4

DC DC Switching Controllers Overview

The UC2856DWG4 is an improved current-mode PWM controller manufactured by Texas Instruments. It operates within a supply voltage range of 6.95V to 40V and provides a 1.5A output drive capability. The device supports switching frequencies up to 1MHz with a maximum duty cycle of 50%. It features a 16-SOIC package and functions across a temperature range of -40°C to +85°C. Key electrical parameters include a 50ns fall time and a 5.1V internal reference.

DC DC Switching Controllers Feature Summary

• Supports multiple converter topologies including boost, flyback, forward, full bridge, half bridge, and push-pull configurations.
• Integrates comprehensive control features such as programmable soft-start, frequency synchronization, and cycle-by-cycle current limiting.
• Provides high-current dual outputs for driving external power switches efficiently.

DC DC Switching Controllers Applications

• High-frequency DC-DC converters
• Power factor correction circuits
• Battery charger designs

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and lead-free construction as per Texas Instruments standards. Confirm the package type matches the required PCB footprint. Ensure the operating temperature range meets the application's environmental requirements. Check for any obsolescence notices or recommended replacement parts from the manufacturer.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring high-frequency operation up to 1MHz and robust current-mode control. It is suitable for designs needing support for various isolated and non-isolated topologies. Consider the 1.5A output drive strength when selecting external gate drivers or MOSFETs. Evaluate the thermal performance within the specified -40°C to +85°C range.

DC DC Switching Controllers Part Context

This part belongs to the UC2856 series of improved current-mode PWM controllers from Texas Instruments. It is designed to replace older generation controllers like the UC3856, offering enhanced performance and reliability. The device is part of TI's broader portfolio of power management integrated circuits focused on efficient energy conversion.

DC DC Switching Controllers Replacement Considerations

UC2856DW

DC DC Switching Controllers FAQ

What is the maximum switching frequency supported by the UC2856DWG4?

The UC2856DWG4 supports switching frequencies up to 1MHz.

Does the UC2856DWG4 support frequency synchronization?

Yes, the device includes a clock synchronization feature to allow timing alignment with other system components.