MP3435 – 19A, 600kHz, 22V SYNCHRONOUS BOOST WITH INPUT DISCONNECT

MP3435 Rev. 1.0

MonolithicPower.com

21

11/30/2021

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There is also a right half-plane zero (FRHPZ) that

exists in continuous conduction mode (CCM),

where IL does not drop to zero in each cycle.

FRHPZ can be calculated using Equation (12):

=

 

2

LOAD

IN

RHPZ

OUT

R

V

F

(

) (Hz)

2

L

V

(12)

FRHPZ increases the gain and reduces the phase

simultaneously, resulting in a smaller phase

and gain margin. The worst-case condition

occurs when VIN is at its minimum and the

output power is at its maximum. See the Typical

Application Circuits section on page 23 for

compensation recommendations.

Design Example

Table 3 shows a design example following the

application guidelines for the specifications

below.

Table 3: Design Example

VIN

VOUT

IOUT

3V to 10V

12V

0A to 2A

The maximum output current is determined by

the allowable temperature rise, ICL, and VIN.

Figure 6 and Figure 7 on page 23 show the

detailed application schematics. The typical

performance and circuit waveforms are shown

in the Typical Performance Characteristics

section

on

page

9.

For

more

device

applications, refer to the related evaluation

board datasheet.