MP6005

– WIDE-INPUT, HIGH-EFFICIENCY FLYBACK AND FORWARD CONTROLLER

MP6005 Rev. 1.0

www.MonolithicPower.com

25

2/5/2021

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create a Pi (

π) filter. This is known as a Pi (π)

filter. Choose an inductor between

0.1μH and

0.47μH to achieve sufficient VOUT ripple and

system stability.

In forward mode, the output ripple can be

estimated with Equation (27):

OUT

OUT

OUT

2

SW

OUT

IN

V

V

x N

ΔV

=

x (1-

)

8 x f

x L x C

V

(27)

Design Example

Table 3 shows an example of PSR flyback

topology design.

Table 3: PSR Flyback Design Example

VIN

36V to 57V

VOUT

12V

IOUT

2.5A

Figure 15 shows a detailed schematic of a

typical PSR flyback application circuit (see the

Typical Performance Characteristics section on

page 11 for more details). For more detailed

device applications, refer to the corresponding

evaluation board datasheet.

Table 4 shows an example of SSR forward

topology design.

Table 4: SSR Forward Design Example

VIN

36V to 57V

VOUT

5V

IOUT

4.8A

Figure 16 shows a detailed schematic of a

typical SSR forward application circuit. For

more detailed device applications, refer to the

corresponding evaluation board datasheet.