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FDSM Series MagI³C Power Modules

Wurth's non-synchronous, fixed, step-down regulator module has input voltages of 7 - 28 V

Image of Wurth Electronics MagI3C-FDSM Power ModulesThe MagI³C FDSM series from Wurth Electronics, with input voltages of 7 - 28 V and fixed 3.3 V or 5 V output, is particularly suitable for replacing LM78 linear regulators where high efficiency is required and thermal-management options are limited. It expands the existing 0.5 A output current family to 1 A. Typical 12 V to 5 V conversions at 1 A achieve 92% energy efficiency.

The FDSM series are fixed output voltage, fully integrated, DC/DC power supplies. The modules integrate the switching power stage, control circuity, inductor, and input and output capacitors all in one package. No external components are required for operation. Design effort and complexity is reduced to a minimum, ensuring fast time-to-market and low development costs. The standard THT package allows for easy assembly and is pin compatible to LM78 linear regulators. The modules comply with the low-noise electromagnetic emission norm EN 55022 class B.

Application Notes

Characteristics & Features Applications
  • Output current up to 500 mA
  • Input voltage range from 6 V to 28 V
  • Output voltage range from 3.3 V and 5 V
  • Low output voltage ripple (~10 mV)
  • Peak efficiency up to 95%
  • Short-circuit protection
  • Operating temperature range: -40°C to 85°C
  • Output overvoltage and overtemperature protection
  • EN 55022 class B compliant
  • Package: SIP-3
  • Current mode regulation (CM)
  • RoHS and REACH compliant
  • Point-of-load from 18 V, 15 V, 12 V, and 9 V rails
  • Replacement for linear regulators
  • Interface and microcontroller supply
  • Servers, data, and telecom
  • System power supplies
  • MCUs and MPUs
  • V0 interface

FDSM Series MagI³C Power Module

ImageManufacturer Part NumberCurrent - Output (Max)Voltage - Output 1Available QuantityView Details
1730103781730103781A3.3V57 - ImmediateView Details
173010578173010578-5V207 - ImmediateView Details

ABC of Power Modules Design Guide

ImageManufacturer Part NumberDescriptionTypeTitleAuthor(s)Available QuantityView Details
ABC OF POWER MODULES AT APEC744016ABC OF POWER MODULES AT APECBookABC of Power ModulesSteffen Wolf, Ralf Regenhold, Jan Stephan8 - ImmediateView Details
Updated: 2017-02-01
Published: 2016-07-18

Associated Content

LDHM Series MagI³C Power Modules
Würth Elektronik LDHM series, of the MagI³C power modules family, are constant, buck, LED driver modules. The module drives a maximum load of 450 mA LED current and comprises a fully integrated current driver with passives, all in one package.

VDRM Series MagI³C Power Modules
The VDRM family from Wurth Electronics are step-down or “buck” regulators that contain the control circuitry, power MOSFETs, the output inductor and several discrete resistors and capacitors within a molded package and metal substrate.