ZHCSBX0C december 2013 – may 2023 TPS65261 , TPS65261-1
PRODUCTION DATA
- 1
- 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 Adjusting the Output Voltage
- 7.3.2 Power Failure Detector
- 7.3.3 Enable and Adjusting Undervoltage Lockout
- 7.3.4 Soft-Start Time
- 7.3.5 Power Up Sequencing
- 7.3.6 V7V Low Dropout Regulator and Bootstrap
- 7.3.7 Out-of-Phase Operation
- 7.3.8 Output Overvoltage Protection (OVP)
- 7.3.9 Slope Compensation
- 7.3.10 Overcurrent Protection
- 7.3.11 Power Good
- 7.3.12 Adjustable Switching Frequency
- 7.3.13 Thermal Shutdown
- 7.4 Device Functional Modes
- 8 Application and Implementation
- 9 Device and Documentation Support
- 10Mechanical, Packaging, and Orderable Information
8.2.3 Application Curves
Figure 8-3 BUCK1, Soft-Start with No Load
Figure 8-5 BUCK2, Soft-Start with No Load
Figure 8-7 BUCK3, Soft-Start with No Load
Figure 8-9 BUCK1, PSM Mode, Steady State Operation at Light Load
Figure 8-11 BUCK2, PSM Mode, Steady State Operation at Light Load
Figure 8-13 BUCK3, PSM Mode, Steady State Operation with Light Load
Figure 8-15 BUCK1, Load Transient, 0.75 A to 1.5 A SR = 0.25 A/µs
Figure 8-17 BUCK2, Load Transient, 0.5 A to 1.0 A SR = 0.25 A/µs
Figure 8-19 BUCK3, Load Transient, 0.5 A to 1.0 A SR = 0.25 A/µs
Figure 8-21 BUCK1, Overcurrent Protection
Figure 8-23 BUCK2, Overcurrent Protection
Figure 8-25 BUCK3, Overcurrent Protection
Figure 8-27 Automatic Power Sequencing, MODE=EN1=EN2=HIGH
Figure 8-29 Automatic Power Sequencing, MODE=EN1= HIGH, EN2=LOW
Figure 8-31 Automatic Power Sequencing, MODE=EN2=HIGH, EN1=LOW
Figure 8-33 Trigger Voltage 1.23V, Reset vs VDIV
| VIN = 12 V | VOUT1 = 1.2 V/1.5 A | VOUT2 = 3.3 V/1 A |
| VOUT3 = 1.8 V/1 A | ||
| EVM Condition 4 Layers, 64 mm × 69 mm, TA = 27.2°C | ||
Figure 8-4 BUCK1, Soft-Start with Full Load
Figure 8-6 BUCK2, Soft-Start with Full Load
Figure 8-8 BUCK3, Soft-Start with Full Load
Figure 8-10 BUCK1, Steady State Operation with Full Load
Figure 8-12 BUCK2, Steady State Operation with Full Load
Figure 8-14 BUCK3, Steady State Operation with Full Load
Figure 8-16 BUCK1, Load Transient, 1.5 A to 2.25 A SR = 0.25 A/µs
Figure 8-18 BUCK2, Load Transient, 1.0 A to 1.5 A SR = 0.25 A/µs
Figure 8-20 BUCK3, Load Transient, 1.0 A to 1.5 A SR = 0.25 A/µs
Figure 8-22 BUCK1, Hiccup and Recovery
Figure 8-24 BUCK2, Hiccup and Recovery
Figure 8-26 BUCK3, Hiccup and Recovery
Figure 8-28 Automatic Power Sequencing, MODE=EN1=EN2=HIGH
Figure 8-30 Automatic Power Sequencing, MODE=EN1=HIGH, EN2=LOW
Figure 8-32 Automatic Power Sequencing, MODE=EN2=HIGH, EN1=LOW
Figure 8-34 Deglitch Time, Reset vs VDIV
| VIN = 12 V | VOUT1 = 1.2 V/3 A | VOUT2 = 3.3 V/2 A |
| VOUT3 = 1.8 V/2 A | ||
| EVM Condition 4 Layers, 64 mm × 69 mm, TA = 27.2°C | ||