Overview of inverse buck converter

AN3151

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Doc ID 17051 Rev 1

3

Overview of inverse buck converter

The inverse buck stage offers the advantages previously mentioned and is managed by the

same equations as the standard buck converter.

Here in short, some details related to the DC-DC converter stage, with further details of the

analog designing [3].

Theory of operation

The voltage across the L inductor is calculated using the following formula:

Equation 1

where:

●

●

L=inductance (H)

●

Figure 6.

Inverse buck converter (single-string)

The following equations were used in the design:

Table 1.

Electrical specs

Description

Symbol

Value

Unit

Input voltage

48

V

White LED

Everlight EHP-AX08EL P03-V4

LED forward voltage

V

dt

di

L

V

l