Datasheet TPS40210, TPS40211 (Texas Instruments) - 7

TPS40210 , TPS40211 www.ti.com
SLUS772F – MARCH 2008 – REVISED MARCH 2015
Typical Characteristics (continued) 4.30 155 UVLO V 4.5 V V VDD – Off V 154 4.5 V ld 4.25 m o On 7.5 V h – s ld 12 V & 20 V 153 re o 30 V h h T s 7.5 V t 4.20 UVLO On u re o h 152 k T c t 30 V o n L 4.15 151 e rre g u rc lta e o v 150 rv O e 4.10 – d ) n C 12 V & 20 V U 149 (O – S O4.05 N L IS V 148 V U V UVLO Off 4.00 147 -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 7. Undervoltage Lockout Threshold vs Junction Figure 8. Overcurrent Threshold vs Junction Temperature Temperature 155 5 154 4 V % m – – 153 e 3 g ld n o a h 152 h 2 s 4.5 V C re y h c T 151 n 1 12 V t e n u q rre 150 0 u re F rc e g v 149 in -1 O h – itc 30 V ) 148 -2 C w S (O V (V) S 147 – -3 VDD N C 4.5 V IS S V f O 12 V 146 -4 30 V 145 -5 0 5 10 15 20 25 30 35 40 45 -40 -25 -10 5 20 35 50 65 80 95 110 125 V – Input Voltage – V T – Junction Temperature – ° C VDD J Figure 9. Overcurrent Threshold vs Input Voltage Figure 10. Switching Frequency Change vs Junction Temperature 29 1400
W
k- R Discharge ) 4.5 V e SS(DSCH) 27 P c L 1200 n S ta /V is D s D 25 e V 1000 R (V e rg tio 12 V a a 23 24 V h 800 R c n is tio /D a e s 21 rg 600 n a e h p C m o 19 V (V) rt 400 C VDD ta e S p 36 V 12 V ft lo 24 V o 17 S S 200 R Charge 36 V – SS(CHG) 4.5 V S S R 15 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 J T – Junction Temperature – ° C J Figure 11. Oscillator Amplitude vs Junction Temperature Figure 12. Soft-Start Charge/Discharge Resistance vs Junction Temperature
Copyright © 2008–2015, Texas Instruments Incorporated Submit Documentation Feedback 7 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