PXS30 Datasheet, PDF(77/139 Page) Freescale Semiconductor, Inc

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PXS30 Datasheet, PDF (77/139 Pages) Freescale Semiconductor, Inc – PXS30 Microcontroller

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Electrical characteristics

3.8.2 PMC board schematic and components

Figure 7 shows a sample application for the PMC.

VDD_HV_PMU

VSS_HV_PMU

VREG_CTRL

VDD_LV_COR

VSS_LV_COR

Figure 7. PMU mandatory external components

Table 18. VRC SMPS recommended external devices

Reference

Designator

Part Description

Part Type Nominal

Description

capacitor 20 ÂµF, 20 V Filter capacitor

capacitor 0.1 ÂµF, 20 V Filter capacitor

capacitor 20 ÂµF, 20 V Supply decoupling cap, ESR < 50 mï,

as close to p-MOS source as possible

capacitor 0.1 ÂµF, 16 V Ceramic

capacitor 20 ÂµF, 16 V Buck capacitor, total ESR < 100 mï,

as close to the coil as possible

SS8P3L

Schottky

Vishay low Vf Schottky diode

inductor 4 ÂµH, 1.5 A Buck shielded coil low ESR

SUD50P04/SQD50P04 pMOS 2 A, 40 V Vishay low threshold p-MOS, Vth <

2.5 V, Rdson@4.5 V < 20 mï, Cg

< 5 nF

resistor 50â100 kï Pull up for power p-MOS gate

PXS30 Microcontroller Data Sheet, Rev. 1

Freescale Semiconductor

PreliminaryâSubject to Change Without Notice

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