Boost Converter Pro | ConFinal
Power Electronics

Boost Converter Designer

Professional design tool for Step-Up Converters. Includes Component Sizing Guide with adjustable safety margins to ensure you select robust MOSFETs, Diodes, and Capacitors.

Specs & Margins

Input
V
V
A
kHz

Derating / Safety

%
%

Parasitics

%
%
A
mΩ

Design Analysis

CCM Mode
Required Inductance (L)
— µH
—Peak Ipk
—Avg Iin
—Power Loss
Component Sizing Guide
Minimum rated values with applied safety margin
MOSFET VDS — V
Diode VR — V
Cap Voltage — V
MOSFET ID — A
Diode IF — A
Inductor Isat — A
—Min Cout
—Total Ripple
—RHP Zero
Inductor Current (IL) I_pk I_avg 0A Time

Physics Explained

[Image of boost converter circuit diagram]

Component Derating

Using components at 100% of their rating reduces lifespan. A 20-30% safety margin is standard engineering practice.

RHP Zero

The Right-Half-Plane Zero limits bandwidth. If fcrossover > fRHPZ, the control loop becomes unstable.

ESR Ripple

Output ripple is often dominated by Capacitor ESR. Low-ESR ceramic or polymer capacitors are recommended.

How to Use

1

Set Operating Point

Define input/output voltages and load current. Ensure Vout > Vin.

2

Set Safety Margins

Input your desired Voltage and Current margins (e.g., 25%). The Sizing Guide will calculate recommended part ratings.

3

Check Stability

Ensure your control loop crossover frequency is significantly lower than the calculated RHP Zero.