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Typical Performance
19
SLVUAY1 – November 2017
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Copyright © 2017, Texas Instruments Incorporated
TPS5516xQ1-EVM Evaluation Module for 1-A Single-Inductor Buck-Boost-
Converter
Figure 35. Load-step-response
V
VIN
= 4 V, V
VOUT
= 12 V (Boost Mode), 50 mA-150 mA-50 mA
4.5
Line step response / Cranking support
The following graphs show the response of the part to the cold-crank pulse as defined in the OEM
specification LV124. The pulse decreases to 3 V, followed by some ringing before recovering to normal
input voltage.
These graphs are with a 5-V output at 200-mA load.
Figure 36. Cranking Pulse Response With 5-V Output, 200-
mA Load, 2 s/div
Figure 37. Cranking Pulse Response With 5-V Output, 200-
mA Load, Zoom to 100 ms/div
Figure 38. Cranking Pulse Response With 5-V Output, 200-
mA Load, Zoom to 5 ms/div
Figure 39. Cranking Pulse Response With 5-V Output, 200-
mA load, Zoom to 200 µs/div
