SLVS074I
January 1983 – July 2022
TL494
PRODUCTION DATA
1
Features
2
Applications
3
Description
4
Simplified Block Diagram
5
Revision History
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics, Reference Section
7.6
Electrical Characteristics, Oscillator Section
7.7
Electrical Characteristics, Error-Amplifier Section
7.8
Electrical Characteristics, Output Section
7.9
Electrical Characteristics, Dead-Time Control Section
7.10
Electrical Characteristics, PWM Comparator Section
7.11
Electrical Characteristics, Total Device
7.12
Switching Characteristics
7.13
Typical Characteristics
8
Parameter Measurement Information
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
5-V Reference Regulator
9.3.2
Oscillator
9.3.3
Dead-time Control
9.3.4
Comparator
9.3.5
Pulse-Width Modulation (PWM)
9.3.6
Error Amplifiers
9.3.7
Output-Control Input
9.3.8
Output Transistors
9.4
Device Functional Modes
10
Application and Implementation
10.1
Application Information
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.2.1
Input Power Source
10.2.2.2
Control Circuits
10.2.2.2.1
Oscillator
10.2.2.2.2
Error Amplifier
10.2.2.2.3
Current-Limiting Amplifier
10.2.2.2.4
Soft Start and Dead Time
10.2.2.3
Inductor Calculations
10.2.2.4
Output Capacitance Calculations
10.2.2.5
Transistor Power-Switch Calculations
10.2.3
Application Curves for Output Characteristics
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.1.1
Feedback Traces
12.1.2
Input/Output Capacitors
12.1.3
Compensation Components
12.1.4
Traces and Ground Planes
12.2
Layout Example
13
Device and Documentation Support
13.1
Trademarks
13.2
Electrostatic Discharge Caution
13.3
Glossary
14
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
N|16
MPDI002C
PW|16
MPDS361A
D|16
MPDS178G
NS|16
MPDS551A
Thermal pad, mechanical data (Package|Pins)
D|16
QFND167D
Orderable Information
slvs074i_oa
slvs074i_pm
2
Applications
Desktop PCs
Microwave Ovens
Power Supplies: AC/DC, Isolated, With or Without PFC
Server PSUs
Solar Micro-Inverters
Washing Machines: Low-End and High-End
E-Bikes
Power: Telecom/Server AC/DC Supplies:
Dual Controller: Analog
Smoke Detectors
Solar Power Inverters