PAC1932SLASH3SLASH4 datasheet(18/62 Pages) MICROCHIP

18 / 62 page

PAC1932/3/4

DS20005850C-page 18

 2017-2018 Microchip Technology Inc.

FIGURE 4-2:

PAC1932/3/4 Functional Block Diagram.

FIGURE 4-3:

PCB Pattern for Sense

Resistor.

Figure 4-3

shows the recommended PCB pattern for

sense resistor with wide metal for the high-current path.

The drawing shows metal, solder paste openings and

resistor outline. VSOURCE connects to the +terminal of the

high-current path, and the load connects to the -terminal

of the high-current path. Sense+ and Sense- have a

Kelvin connection to the current sense resistor to ensure

that no metal with high current is included in the VSENSE

measurement path. Sense+ and Sense- are shown as a

differential pair, route them as a differential pair to the

Sense inputs at the chip.

VDD

GND

VDD I/O

ADDRS EL

SLO W/ALE RT

Accumlato r

Differen tia l

VSENS E

Amplifier

VBUS

Buffer/

Divi der

SM_CLK

SM_DATA

PWRDN

ADC/MUX Clocking &

Control

VBUS

Registe rs

VSENS E

Registe rs

VPOWE R

Registe rs

Accumulator

Registe rs

Control

Registe rs

Calculation

and

Calibra tion

16-bit

ADC

16-bit

ADC

Resistor

Decoder

SENSE 1+

SENSE 1-

SENSE 2+

SENSE 2-

SENSE 3+

SENSE 3-

SENSE 4+

SENSE 4-

VBUS1

VBUS2

High

Voltage

MUX

VBUS4

Sen se1+

Sen se2+

Sen se1-

Sen se2-

Sen se3+

Sen se3-

Sen se4+

Sen se4-

VBUS3

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