TL1454ACPW

DC DC Switching Controllers Overview

The TL1454ACPWR is a dual-channel pulse-width modulation (PWM) controller manufactured by Texas Instruments. It integrates two complete PWM control circuits on a single monolithic chip, designed for power supply applications. Key electrical parameters include an operating supply voltage range of 3.6 V to 50 V and a maximum switching frequency of 500 kHz. The device features two error amplifiers with a common-mode input voltage range of 1.04 V to 1.45 V, and supports output currents up to 3 A. It includes an internal 2.5 V regulator, adjustable oscillator, dead-time control comparators, and undervoltage lockout circuitry.

DC DC Switching Controllers Feature Summary

• Integrates two independent PWM control channels with dedicated error amplifiers and output transistors on a single chip.
• Features adjustable dead-time control comparators allowing variable dead time from 0% to 100% for precise timing management.
• Includes an internal 2.5 V reference regulator and undervoltage lockout protection to ensure stable operation under varying supply conditions.

DC DC Switching Controllers Applications

• Dual-output DC-DC converters
• Flyback power supplies
• Buck and boost converter topologies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix in the part number to confirm package type and temperature grade. Ensure compatibility with the required PCB footprint for the TSSOP-16 or SOIC-16 package. Confirm that the operating temperature range meets the application requirements before procurement.

DC DC Switching Controllers Selection Notes

Select this component when dual isolated or non-isolated outputs are required from a single controller IC. Consider the 500 kHz maximum switching frequency for size optimization of passive components. Verify that the 3 A output drive capability matches the external switch requirements.

DC DC Switching Controllers Part Context

The TL1454A belongs to the TL1451A family of dual PWM controllers. It shares architectural similarities with the TL1451A but may differ in specific pinouts or thermal characteristics depending on the package variant. This series is widely used in industrial and consumer power management designs requiring synchronized dual-channel control.

DC DC Switching Controllers Replacement Considerations

Check for direct pin-compatible alternatives within the TL1451A family, such as the TL1451ACD or TL1451AQD. Verify functional equivalence regarding error amplifier offsets and oscillator ranges before substitution.