JAJSOW5F April 2006 – January 2024 TPS5420
PRODUCTION DATA
- 1
- 1特長
- 2アプリケーション
- 3概要
- 4静電気放電に関する注意事項
- 5Ordering Information
- 6Pin Assignments
- 7Specifications
-
8Application Information
- 8.1 Functional Block Diagram
- 8.2
Detailed Description
- 8.2.1 Oscillator Frequency
- 8.2.2 Voltage Reference
- 8.2.3 Enable (ENA) and Internal Slow Start
- 8.2.4 Undervoltage Lockout (UVLO)
- 8.2.5 Boost Capacitor (BOOT)
- 8.2.6 Output Feedback (VSENSE)
- 8.2.7 Internal Compensation
- 8.2.8 Voltage Feed Forward
- 8.2.9 Pulse-Width-Modulation (PWM) Control
- 8.2.10 Overcurrent Limiting
- 8.2.11 Overvoltage Protection
- 8.2.12 Thermal Shutdown
- 8.2.13 PCB Layout
- 8.2.14 Application Circuits
- 8.2.15
Design Procedure
- 8.2.15.1 Design Parameters
- 8.2.15.2 Switching Frequency
- 8.2.15.3 Input Capacitors
- 8.2.15.4 Output Filter Components
- 8.2.15.5 Output Voltage Setpoint
- 8.2.15.6 Boot Capacitor
- 8.2.15.7 Catch Diode
- 8.2.15.8 Additional Circuits
- 8.2.15.9 Circuit Using Ceramic Output Filter Capacitors
- 8.2.15.10 Output Filter Component Selection
- 8.2.15.11 External Compensation Network
- 8.3 Advanced Information
- 8.4 Performance Graphs
- 9Revision History
8.4 Performance Graphs
The performance graphs in Figure 8-6 - Figure 8-12 are applicable to the circuit in Figure 8-3. TA = 25°C. unless otherwise specified.
Figure 8-6 Efficiency vs. Output Current
Figure 8-8 Input Regulation % vs. Input Voltage
Figure 8-10 Output Voltage Ripple and PH Node, IO = 3 A
Figure 8-12 Startup Waveform, VIN and VOUT
Figure 8-7 Output Regulation % vs. Output Current
Figure 8-9 Input Voltage Ripple and PH Node, IO = 3 A
Figure 8-11 Transient Response, Io Step 0.5 to 1.5 A
Figure 8-13 Startup Waveform, ENA and VOUT