L5988D View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

L5988D

4 A continuous (more than 5 A pulsed) step-down switching regulator with synchronous rectification

STMicroelectronics 

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L5988D

Application information

In Figure 18 is shown the module and phase of the open loop gain. The bandwidth is about

42 kHz and the phase margin is 56°.

Figure 18. Open loop gain bode diagram with high ESR output capacitor

The response of the system to a load transition in terms of output voltage regulation is

affected not only by the designed compensation network but it also rely on the selection of

the power components (the inductor value, for example, limits the slew rate of the current).

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