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Figure 1. LDO line transient test setup showing input voltage step and output transient voltages.
Test LDO Transient Response
The common way to test line LDO transient response is to generate a step-
The TS200/TS250 high power function generator amplifier combine with a function generator, can achieve the above requirements and making it ideal for transient response test. The TS200/TS250 can drive up to 6A peak current and it can drive large capacitance. Working with a function generator, the output rise and fall time can be controlled.
Figure 2 shows how to measure line transient response. A function generator generates a square pulse with an adjustable rise and fall time (e.g. 10us). The function generator is connected to the TS200 modulation input. The TS200 output is connected to the device under test (LDO voltage input). The TS200 modulation input is set to AC-
Figure 2. LDO line transient response test setup.
Figure 3. LDO line transient response measurement example.
Related Technical Information
Copyright: Line Transient Response