171050601 查看數據表（PDF） - Wurth Elektronik GmbH & Co. KG, Germany.

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171050601

MagI3C Power Module VDRM – Variable Step Down Regulator Module

Wurth Elektronik GmbH & Co. KG, Germany. 

WPMDM1500602 / 171050601

MagI3C Power Module

VDRM – Variable Step Down Regulator Module

BLOCK DIAGRAM

VIN

CIN

CSS

AGND

Power Module

Linear

Regulator

1 VIN

3 EN

CINint

2x0.47µF

2 SYNC

2MΩ

HSS

Controller/

Power Control/

Protection Circuitry

6 SS/TRK

AGND

4

CBST

3.3µH

LS S

VOUT 7

Error

Amplifier

PGND

EP

FB 5

VREF

0.8V

VOUT

RFBT

COUT

RFBB

AGND

CIRCUIT DESCRIPTION

The MagI³C Power Module 171050601 consists of a synchronous step down regulator with integrated MOSFETs and a

power inductor. The control scheme is based on a Current Mode (CM) regulation loop.

The VOUT of the regulator is divided with the feedback resistor network RFBT and RFBB and fed into the FB pin. The error

amplifier compares this signal with the internal 0.796V reference. The error signal is amplified and controls the on-time of a

fixed frequency pulse width generator. This signal drives the power MOSFETs.

The Current Mode architecture features a constant frequency during load steps. Only the on-time is modulated. It is

internally compensated and stable with low ESR output capacitors and requires no external compensation network.

This architecture supports fast transient response and very small output voltage ripple values (< 10mV) are achieved.

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© July 2018

Würth Elektronik eiSos GmbH & Co. KG – Data Sheet Rev. 2.0

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