ZHCSNA3 October 2021 TPS562212
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 Advanced Emulated Current Mode Control
- 7.3.2 Mode Selection and PG/SS Pin Function Configuration
- 7.3.3 Power Good (PG)
- 7.3.4 Soft Start and Pre-Biased Soft Start
- 7.3.5 Output Discharge Through PG/SS Pin
- 7.3.6 Precise Enable and Adjusting Undervoltage Lockout
- 7.3.7 Overcurrent Limit and Undervoltage Protection
- 7.3.8 Overvoltage Protection
- 7.3.9 Thermal Shutdown
- 7.4 Device Functional Modes
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
8.2.3 Application Curves
VIN = 12 V, L1 = 2.2 μH, COUT = 22 μF, TA = 25°C (unless otherwise noted)
Figure 8-2 Efficiency Figure 8-4 Line
Regulation
Figure 8-6 Steady State Waveforms, IOUT = 0
A
Figure 8-8 Steady State Waveforms, IOUT = 1.0
A
Figure 8-10 Transient Response 0.5 to 2 A with Slew Rate of 2.5
A/μs 
Figure 8-12 Transient Response 0 to 2 A with Slew Rate of 2.5
A/μs (ECO)
Figure 8-14 Start-Up Relative to VIN
Figure 8-16 Enable Relative to EN
Figure 8-18 Output Short Protection (ECO)
Figure 8-3 Load
RegulationFigure 8-5 Case
Temperature Rise vs Load Current
Figure 8-7 Steady State Waveforms, IOUT = 0.1
A
Figure 8-9 Steady State Waveforms, IOUT = 2
A
Figure 8-11 Transient Response 1 to 2 A with Slew Rate of 2.5
A/μs 
Figure 8-13 Transient Response 0 to 2 A with Slew Rate of 2.5
A/μs (FCCM)
Figure 8-15 Shutdown Relative to VIN
Figure 8-17 Disable Relative to EN
Figure 8-19 Output Short Recovery (ECO)