link to page 1 TPS62933, TPS62932, TPS62933F,TPS62933P, TPS62933O SLUSEA4D – JUNE 2021 – REVISED AUGUST 2022 TPS6293x 3.8-V to 30-V, 2-A, 3-A Synchronous Buck Converters in a SOT583 Package1 Features range of 3.8 V to 30 V, and supports up to 2-A (TPS62932) and 3-A (TPS62933 and TPS62933x) • Configured for a wide range of applications continuous output current and 0.8-V to 22-V output – 3.8-V to 30-V input voltage range voltage. – 0.8-V to 22-V output voltage range The device employs fixed-frequency peak current – Ultra-low quiescent current: 12 μA (TPS62932, control mode for fast transient response and good TPS62933, and TPS62933P) line and load regulation. The optimized internal – Integrated 76-mΩ and 32-mΩ MOSFETs loop compensation eliminates external compensation – 0.8 V ± 1% reference voltage (25°C) components. – Maximum 98% duty cycle operation – Precision EN threshold The TPS62932, TPS62933, and TPS62933P operate – 2-A (TPS62932) and 3-A (TPS62933 and in pulse frequency modulation for high light load TPS62933x) continuous output current efficiency. The TPS62933F operates in forced – –40°C to 150°C operating junction temperature continuous current modulation which maintains • Numerous pin-compatible options lower output ripple during all load conditions. The – TPS62932, TPS62933, and TPS62933F with TPS62933O operates in out of audio mode to avoid the SS pin for adjustable soft-start time audible noise. – TPS62933P and TPS62933O with the PG pin Device Information for a power-good indicator Part NumberPackage (1) Body Size (NOM) – TPS62932, TPS62933, and TPS62933P with TPS6293x SOT583 (8) 1.60 mm × 2.10 mm pulse frequency modulation (PFM) for high light-load efficiency (1) For all available packages, see the orderable addendum at – TPS62933F with forced continuous current the end of the data sheet. modulation (FCCM) – TPS62933O with out-of-audio (OOA) feature VIN VIN BST C • Ease of use and small solution size BST CIN L – Peak current control mode with internal GND SW VOUT R compensation FBT – 200-kHz to 2.2-MHz selectable frequency V EN FB C EN OUT – EMI friendly with frequency spread spectrum RFBB SS RT (TPS62932, TPS62933, TPS62933P and TPS62933O) – Supports start-up with prebiased output Simplified Schematic – Cycle-by-cycle OC limit for both high-side and 100 low-side MOSFETs – Non-latched protections for OTP, OCP, OVP, 80 UVP, and UVLO 60 – 1.6-mm × 2.1-mm SOT583 package • Create a custom design with the TPS6293x using ficiency (%) 40 Ef the WEBENCH® Power Designer 20 VOUT=3.3V VOUT=5V 2 Applications VOUT=12V 0 0.001 0.005 0.02 0.05 0.1 0.2 0.5 1 2 3 • Building automation, appliances, industrial PC I-Load (A) • Multifunction printers, enterprise projectors TPS62933 Efficiency, VIN = 24 V, fSW = 500 kHz • Portable electronics, connected peripherals • Smart speakers, monitors • Distributed power systems with 5-V, 12-V, 19-V, and 24-V input 3 Description The TPS6293x is a high-efficiency, easy-to-use synchronous buck converter with a wide input voltage An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Description (continued) 6 Device Comparison Table 7 Pin Configuration and Functions 8 Specifications 8.1 Absolute Maximum Ratings 8.2 ESD Ratings 8.3 Recommended Operating Conditions 8.4 Thermal Information 8.5 Electrical Characteristics 8.6 Typical Characteristics 9 Detailed Description 9.1 Overview 9.2 Functional Block Diagram 9.3 Feature Description 9.3.1 Fixed Frequency Peak Current Mode 9.3.2 Pulse Frequency Modulation 9.3.3 Voltage Reference 9.3.4 Output Voltage Setting 9.3.5 Switching Frequency Selection 9.3.6 Enable and Adjusting Undervoltage Lockout 9.3.7 External Soft Start and Prebiased Soft Start 9.3.8 Power Good 9.3.9 Minimum On Time, Minimum Off Time, and Frequency Foldback 9.3.10 Frequency Spread Spectrum 9.3.11 Overvoltage Protection 9.3.12 Overcurrent and Undervoltage Protection 9.3.13 Thermal Shutdown 9.4 Device Functional Modes 9.4.1 Modes Overview 9.4.2 Heavy Load Operation 9.4.3 Light Load Operation 9.4.4 Out of Audio Operation 9.4.5 Forced Continuous Conduction Operation 9.4.6 Dropout Operation 9.4.7 Minimum On-Time Operation 9.4.8 Shutdown Mode 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 Custom Design With WEBENCH® Tools 10.2.2.2 Output Voltage Resistors Selection 10.2.2.3 Choosing Switching Frequency 10.2.2.4 Soft-Start Capacitor Selection 10.2.2.5 Bootstrap Capacitor Selection 10.2.2.6 Undervoltage Lockout Setpoint 10.2.2.7 Output Inductor Selection 10.2.2.8 Output Capacitor Selection 10.2.2.9 Input Capacitor Selection 10.2.2.10 Feedforward Capacitor CFF Selection 10.2.2.11 Maximum Ambient Temperature 10.2.3 Application Curves 10.3 What to Do and What Not to Do 11 Power Supply Recommendations 12 Layout 12.1 Layout Guidelines 12.2 Layout Example 13 Device and Documentation Support 13.1 Device Support 13.1.1 Third-Party Products Disclaimer 13.1.2 Development Support 13.1.2.1 Custom Design With WEBENCH® Tools 13.2 Receiving Notification of Documentation Updates 13.3 Support Resources 13.4 Trademarks 13.5 Electrostatic Discharge Caution 13.6 Glossary 14 Mechanical, Packaging, and Orderable Information
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