# Flyback Transformer Designer

> Iterate·Custom Lib·Offline

Canonical page: [https://chrome-stats.com/d/id6771727431](https://chrome-stats.com/d/id6771727431)

## Overview

- **ID:** `id6771727431`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** 建忠 徐
- **Category:** Utilities
- **Version:** 2.1
- **Last updated:** 2026-09-14
- **First published:** 2026-05-26
- **Size:** 8.44 MB
- **Data as of:** 2026-09-15
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/flyback-transformer-designer/id6771727431)
- **Privacy policy:** [https://tobebetter2026.github.io/Public-documents-Flyback-Transformer-Designer/privacy-policy.html](https://tobebetter2026.github.io/Public-documents-Flyback-Transformer-Designer/privacy-policy.html)

## Description

Offline design, DCM/BCM/QR/CCM, core×turns×wire iteration, multi-output, sort by loss/volume/winding, built-in lib + My DB. PDF/JSON in 3 steps. On device.

Flyback Transformer Designer turns your flyback power supply spec into a complete transformer design — core, gap, turns, wire gauge, and loss breakdown — all computed locally on your device, no internet required.

Built for power-electronics engineers who need more than a spreadsheet. Covers all four operating modes: DCM, BCM, QR, and CCM. Supports multi-output secondaries with independent winding design, not a simplified single-output approximation.

Three steps to a finished design:
1. Enter your spec — Vin range, output voltages, power, frequency, and design constraints.
2. Review the top 5 core candidates — gap, Lm, winding layout, wire selection, copper/core losses, and temperature-rise estimates; switch the ranking between balanced, high-reliability, or lowest-loss.
3. Export a professional summary report (PDF or JSON).

Why you'll like it:
- Full core × turns × wire-gauge iteration with built-in AP pre-screening — no more flipping through datasheets by hand.
- Optional B_max design ceiling — leave it blank and the engine guards against saturation automatically using the material's Bsat×70% margin, so an overly conservative guess won't rule out viable designs; set your own ceiling anytime for an extra constraint.
- Built-in ferrite core library (EE, RM, PQ, ETD, etc.) plus My Database for your own materials, cores, and bobbins.
- Parameter sweep — explore f_sw, load, and Vin sensitivity curves before you wind a single turn.
- 100% local computation; your data never leaves your device.
- Native support for iPhone, iPad, and Mac (Apple silicon); switch between Chinese and English.

3-day full-feature trial from first launch — you are not charged when it ends. After the trial, a one-time App Store purchase unlocks steps 2–3, My Database editing, and export. This is not a subscription and does not auto-renew. Existing annual subscriptions remain valid until they expire.

Privacy Policy: https://tobebetter2026.github.io/Public-documents-Flyback-Transformer-Designer/privacy-policy.html
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ (Apple Standard EULA)

## Rankings

- #1,224,146 — Overall

## Similar extensions and apps

- [Inductor Design Pro](https://chrome-stats.com/d/id6758878884)
- [Transformer Calculator Pro](https://chrome-stats.com/d/id6756908546)
- [Inductor Calculator Master](https://chrome-stats.com/d/id6772124135)
- [Audio Transformer Calculator](https://chrome-stats.com/d/id1500812310) — 3.80 / 5
- [Transformer Designer](https://chrome-stats.com/d/id1541116996)
- [Coil Toolkit Pro](https://chrome-stats.com/d/id6778254078)
- [CoreWise](https://chrome-stats.com/d/id6755778995)
- [Top Hand Transformer Lab](https://chrome-stats.com/d/id6759132606) — 5.00 / 5
- [Transformer Calc 2](https://chrome-stats.com/d/id1597015791) — 1.00 / 5
- [Calculation Transformers](https://chrome-stats.com/d/id6759037556)
- [Filter workbench](https://chrome-stats.com/d/id6753708103)
- [Transformer Calculation Tool](https://chrome-stats.com/d/id6772152007)

---

Source: [Chrome-Stats](https://chrome-stats.com/d/id6771727431)