## 사이트 설정

##### 통화 설정
제품
RF
EMI
리소스
제품 설명서
취급 및 가공
모델 및 레이아웃 도구
교육
일반
비디오 라이브러리
Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors
품질
품질 인증
소재 인증
안전 인증
신뢰성
취급/가공
정보
정보
채용
위치
리소스

# Application example

for Hexa-Path – Flyback

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## Formulas used to calculate electrical characteristics

Connecting windings in series:

• Inductance = Inductance(table) × (number of windings)2
• DCR = DCR(table) × number of windings
• Isat = (Isat(table) × 6) ÷ number of windings connected in series
• Irms = Irms(table)

Connecting windings in parallel:

• Inductance = Inductance(table)
• DCR = 1 ÷ [number of windings × (1 ÷ DCR(table))]
• Isat = (Isat(table) × 6) ÷ number of windings connected in series
• Irms = Irms(table) × number of windings

### Create a 13 Watt 2:1:1 flyback transformer with a bias winding

Choose HPH3-0138L
Vin = 36 – 57 Vdc; Vout = 12 V, 1.1 A

Part number Inductance (µH) Percent Tolerance DCR max (Ω) Volt-time product (V-µs) Peak energy storage (µJ) Isat (A) Irms (A)
HPH3-0138L 23.6 20 0.125 43.9 1.457 0.42 1.13

Connecting primary windings in series:
When primary windings (Wpri) are connected in series, inductance increases, energy storage and Irms remain the same, but DCR increases and Isat decreases.

Example: For HPH3-0138L, connect two primary windings in series:
• Inductance = Inductance(table) × Wpri2 = 23.6 × 22 = 94.4 μH
• DCR = DCR(table) × Wpri = 0.125 × 2 = 0.25 Ohms
• Isat = (Isat(table) × 6) ÷ Wpri = (0.42 × 6) ÷ 2 = 1.26 A
• Irms = Irms(table) = 1.13 Connecting secondary windings in parallel:
When secondary windings (Wsec) are connected in parallel, DCR decreases and Irms increases.

Example: For HPH3-0083L, connect two secondary windings in parallel:
• DCR = 1 ÷ [Wsec × (1 ÷ DCR(table))] = 1 ÷ [(2 × (1 ÷ 0.125)] = 0.0625 Ohms
• Irms = Irms(table) × Wsec = 1.13 × 2 = 2.26 A