ZHCSP41 January 2022 TPSM5D1806E
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 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 Adjustable Output Voltage
- 7.3.2 Frequency Selection
- 7.3.3 Minimum and Maximum Input Voltage
- 7.3.4 Recommended Settings
- 7.3.5 Device Mode Configuration
- 7.3.6 Input Capacitors
- 7.3.7 Minimum Required Output Capacitance
- 7.3.8 Ambient Temperature Versus Total Power Dissipation
- 7.3.9 Remote Sense
- 7.3.10 Enable (EN) and Undervoltage Lockout (UVLO)
- 7.3.11 Soft Start
- 7.3.12 Power Good
- 7.3.13 Safe Start-Up into Pre-Biased Outputs
- 7.3.14 BP5
- 7.3.15 Overcurrent Protection
- 7.3.16 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
7.3.8 Ambient Temperature Versus Total Power Dissipation
When operating the TPSM5D1806E in dual channel configuration with different output voltages, the maximum operating ambient temperature can be determined using the total power dissipation of both channels. Refer to the power dissipation curves, Figure 6-2 and Figure 6-9, to determine the power dissipation for each output. Sum the power dissipation of both outputs to calculate the total power dissipation. Refer to Figure 7-6 to determine the maximum allowable operating ambient temperature for a given total power dissipation. Increasing the airflow allows operation at a higher ambient temperature.
Figure 7-6 Ambient Temperature Versus Total Power Dissipation