Datasheet TPS40210, TPS40211 (Texas Instruments) - 6

TPS40210, TPS40211
SLUS772F – MARCH 2008 – REVISED MARCH 2015
www.ti.com 6.6 Typical Characteristics 1200 68 pF 1200 CT(pF) 33pF 470 1000 220 1000 100 z 68 H 800 z k 33 H 800 - k - y c y c n n e 100pF e u 600 u 600 q q re re F F - 220 pF - W W 400 400 f S f S 200 200 470 pF 0 0 0 0.2 0.4 0.6 0.8 1.0 1.2 100 200 300 400 500 600 700 800 900 1000 D - Duty Cycle RT - Timing Resistance - k
W
Figure 1. Frequency vs Timing Resistance Figure 2. Switching Frequency vs Duty Cycle 1.4 6 52 V 1.2 4.5 V 5 A A m
m
– 1.0 – t t n n 4 12 V rre rre u 0.8 u C C t n n 3 e w c o s 0.6 td ie u u h Q S 2 – – 0.4 D D D D I V VVDD I V 12 V 1 0.2 4.5 V 52 V 0 0 -40 -25 -10 5 20 35 50 65 80 95 110 125 -40 -25 -10 5 20 35 50 65 80 95 110 125 T – Junction Temperature – ° C T – Junction Temperature – ° C J J Figure 3. Quiescent Current vs Junction Temperature Figure 4. Shutdown Current vs Junction Temperature 0.4 0.5 52 V 0.4 % 0.2 % – – 0.3 e e g g n n a a 0.2 h 0.0 h C C e e 0.1 g g lta lta o -0.2 o 0.0 V V e e c c n n -0.1 re re -0.4 fe 4.5 V fe e e -0.2 R R – V – VDD B B -0.3 F -0.6 V 12 V 12 V F V 4.5 V 52 V -0.4 -0.8 -0.5 -40 -25 -10 5 20 35 50 65 80 95 110 125 0 10 20 30 40 50 60 T – Junction Temperature – ° C J V – Input Voltage – V VDD Figure 5. Reference Voltage Change vs Junction Figure 6. Reference Voltage Change vs Input Voltage Temperature
6 Submit Documentation Feedback Copyright © 2008–2015, Texas Instruments Incorporated Product Folder Links: TPS40210 TPS40211 Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Pin Configuration and Functions 6 Specifications 6.1 Absolute Maximum Ratings 6.2 ESD Ratings 6.3 Recommended Operating Conditions 6.4 Thermal Information 6.5 Electrical Characteristics 6.6 Typical Characteristics 7 Detailed Description 7.1 Overview 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 Soft-Start 7.3.2 BP Regulator 7.3.3 Shutdown (DIS/EN Pin) 7.3.4 Minimum On-Time and Off-Time Considerations 7.3.5 Setting the Oscillator Frequency 7.3.6 Synchronizing the Oscillator 7.3.7 Current Sense and Overcurrent 7.3.8 Current Sense and Sub-Harmonic Instability 7.3.9 Current Sense Filtering 7.3.10 Control Loop Considerations 7.3.11 Gate Drive Circuit 7.3.12 TPS40211 7.4 Device Functional Modes 7.4.1 Operation Near Minimum Input Voltage 7.4.2 Operation With DIS/EN Pin 8 Application and Implementation 8.1 Application Information 8.2 Typical Applications 8.2.1 12-V to 24-V Nonsynchronous Boost Regulator 8.2.1.1 Design Requirements 8.2.1.2 Detailed Design Procedure 8.2.1.3 Application Curves 8.2.2 12-V Input, 700-mA LED Driver, Up to 35-V LED String 8.2.2.1 Design Requirements 8.2.2.2 Detailed Design Procedure 9 Power Supply Recommendations 10 Layout 10.1 Layout Guidelines 10.2 Layout Example 11 Device and Documentation Support 11.1 Device Support 11.1.1 Third-Party Products Disclaimer 11.1.2 Related Devices 11.2 Documentation Support 11.2.1 Custom Design with WEBENCH Tools 11.2.2 Receiving Notification of Documentation Updates 11.2.3 References 11.3 Related Links 11.4 Trademarks 11.5 Electrostatic Discharge Caution 11.6 Glossary 12 Mechanical, Packaging, and Orderable Information