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TL494CPWR

TITL494CPWR

Texas Instruments
Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull Regulator Positive Output Step-Up, Step-Down, Step-Up/Step-Down DC-DC Controller IC 16-TSSOP
Active4,040 in stock
Datasheet Digi-Key Compare Prices

Overview

The TL494CPWR is a versatile pulse-width-modulation (PWM) control circuit designed for power-supply control. It incorporates all the functions required in the construction of a pulse-width-modulation control circuit on a single chip, including two error amplifiers, an adjustable oscillator, and a dead-time control (DTC) comparator.

Why Choose This Part

The device features high flexibility with support for various topologies including push-pull, half-bridge, and full-bridge configurations. It includes built-in dead-time control to prevent output overlap and can operate across a wide supply voltage range of 7V to 40V.

Applications

Switching Power Supplies
Provides the core control logic for buck, boost, and forward converter topologies in AC/DC and DC/DC systems.
Push-Pull and Full-Bridge Converters
Utilizes dual output transistors to drive power stages in high-efficiency isolated power architectures.
Solar Micro-Inverters
Acts as the PWM controller for managing energy conversion from photovoltaic panels to grid-compatible AC or DC storage.
Server and Desktop PSUs
Manages voltage regulation and duty cycle limits in high-power computing equipment power units.

Key Specifications

Function Step-Up, Step-Down, Step-Up/Step-Down
Topology Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull
Clock Sync No
Output Type Transistor Driver
Mounting Type Surface Mount
Output Phases 1
Package / Case 16-TSSOP (0.173", 4.40mm Width)
Control Features Dead Time Control, Frequency Control
Duty Cycle (Max) 45%
Number of Outputs 2
Output Configuration Positive
Frequency - Switching 1kHz ~ 300kHz
Operating Temperature 0degC ~ 70degC (TA)
Synchronous Rectifier No
Supplier Device Package 16-TSSOP
Voltage - Supply (Vcc/Vdd) 7V ~ 40V

Getting Started

When designing with the TL494, calculate the timing components RT and CT to set the desired oscillation frequency according to the datasheet formulas. Ensure the dead-time control pin is biased correctly to prevent simultaneous conduction in bridge topologies, and utilize the dual error amplifiers for voltage and current loop regulation.

TL494 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Temp Range Stock
TL494CPWR (this part) TSSOP-16 0degC ~ 70degC (TA) 4,040
TL494CNSR SOIC-16 0degC ~ 70degC (TA) 6,035
TL494CN SOIC-16 0degC ~ 70degC (TA) 2,196
TL494IDR SOIC-16 -40degC ~ 85degC (.. 2,092
TL494IN DIP-16 -40degC ~ 85degC (.. 2,224

Categories

Power Management > Switching Regulators