SNVU658B March 2020 – May 2021 TPS54J060 , TPS54J061
- Trademarks
- 1Introduction
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2Test Setup and Results
- 2.1 Input/Output Connections
- 2.2 Start Up Procedure
- 2.3 Efficiency
- 2.4 Load and Line Regulation
- 2.5 Load Transients
- 2.6 Loop Characteristics
- 2.7 Output Voltage Ripple
- 2.8 Input Voltage Ripple
- 2.9 Powering Up and Down with EN
- 2.10 Powering Up and Down With VIN
- 2.11 Start-Up Into Pre-Bias
- 2.12 Current Limit
- 3Schematic, List of Materials, and Layout
- Revision History
2.9 Powering Up and Down with EN
Figure 2-21 and Figure 2-22 show the start-up waveforms for the TPS54J060EVM-067 with VIN = 12 V. The TPS54J061EVM-067 has similar behavior and the only difference is the soft-start time is shorter at 1.5 ms typical as a result of the lower 0.6-V reference. The start-up sequence begins as soon as the EN voltage is increased above the enable threshold voltage, and the output voltage ramps up to the set value.
Figure 2-23 shows the TPS54J060EVM-067 shutdown with VIN = 12 V.
Figure 2-21 EN Start-up With 0.3-Ω Load
Figure 2-23 EN Shutdown With 0.3-Ω Load
Figure 2-22 EN Start-up With 0.3-Ω Load, VCC and SSREFIN