ZHCSSS7 august 2023 TPS552872-Q1
PRODUCTION DATA
- 1
- 1 特性
- 2 应用
- 3 描述
- 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 VCC Power Supply
- 7.3.2 EXTVCC Power Supply
- 7.3.3 Input Undervoltage Lockout
- 7.3.4 Enable and Programmable UVLO
- 7.3.5 Soft Start
- 7.3.6 Shutdown
- 7.3.7 Switching Frequency
- 7.3.8 Switching Frequency Dithering
- 7.3.9 Inductor Current Limit
- 7.3.10 Internal Charge Path
- 7.3.11 Output Voltage Setting
- 7.3.12 Output Current Monitoring and Cable Voltage Droop Compensation
- 7.3.13 Output Current Limit
- 7.3.14 Overvoltage Protection
- 7.3.15 Output Short Circuit Protection
- 7.3.16 Power Good
- 7.3.17 Constant Current Output Indication
- 7.3.18 Thermal Shutdown
- 7.4 Device Functional Modes
- 8 Application and Implementation
- 9 Device and Documentation Support
- 10Mechanical, Packaging, and Orderable Information
6.6 Typical Characteristics
VIN = 12 V, TA = 25°C, unless otherwise noted.
VIN = 12 V, TA = 25°C, unless otherwise noted.
Figure 6-1 Efficiency vs
Output Current,
VOUT = 5 V, fSW = 400 kHz, FPWM. VIN = 12 V, TA = 25°C, unless otherwise noted.
Figure 6-1 Efficiency vs
Output Current, VOUT = 5 V, fSW = 400 kHz, FPWM. VIN = 12 V, TA = 25°C, unless otherwise noted.
Figure 6-3 Efficiency vs Output Current, VOUT = 9 V, fSW = 400 kHz, FPWM
Figure 6-5 Efficiency vs Output Current, VOUT = 12 V, fSW = 400 kHz, FPWM
Figure 6-7 Efficiency vs Output Current, VOUT = 15 V, fSW = 400 kHz, FPWM
Figure 6-9 Efficiency vs Output Current, VOUT = 20 V, fSW = 400 kHz, FPWM
Figure 6-11 Efficiency vs Output Current, VOUT = 9 V, fSW = 2 MHz, FPWM
Figure 6-13 Efficiency vs Output Current, VOUT = 12 V, fSW = 2 MHz, FPWM
Figure 6-15 Efficiency vs Input Voltage, VOUT = 12 V, IOUT = 2A, FPWM
Figure 6-17 Reference Voltage vs Temperature
(VREF = 1.2 V)
Figure 6-19 Shutdown Current vs
Temperature
Figure 6-21 Switching Frequency vs
Temperature
Figure 6-2 Efficiency vs
Output Current, VOUT = 5 V, fSW = 400 kHz, PFM
Figure 6-4 Efficiency vs Output Current, VOUT = 9 V, fSW = 400 kHz, PFM
Figure 6-6 Efficiency vs Output Current, VOUT = 12 V, fSW = 400 kHz, PFM
Figure 6-8 Efficiency vs Output Current, VOUT = 15 V, fSW = 400 kHz, PFM
Figure 6-10 Efficiency vs Output Current, VOUT = 20 V, fSW = 400 kHz, PFM
Figure 6-12 Efficiency vs Output Current, VOUT = 9 V, fSW = 2 MHz, PFM
Figure 6-14 Efficiency vs Output Current, VOUT = 12 V, fSW = 2 MHz, PFM
Figure 6-16 Switching Frequency vs Setting
Resistance
Figure 6-18 Quiescent Current vs
Temperature
Figure 6-20 ENABLE/UVLO Rising Threshold vs
Temperature
Figure 6-22 CDC Voltage vs Output Current with
RSENSE = 10 mΩ