MAX11068EVKIT+ Maxim Integrated Products, MAX11068EVKIT+ Datasheet - Page 26

• Manufacturer Part Number: MAX11068EVKIT+
• Description: KIT SMART BATT MEASUREMENT 12CH
• Manufacturer: Maxim Integrated Products

Specifications of MAX11068EVKIT+

• Main Purpose: Power Management, Battery Monitor, Car
• Utilized Ic / Part: MAX11068
• Primary Attributes: Monitors Current, Voltage, Temperature
• Secondary Attributes: 1 ~ 12 Cell- Li-Ion, 1 ~ 12 Cell- NiMH
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Embedded: -

MAX11068 Evaluation System
When using actual or emulated battery cells, keep
in mind the following cell-connection requirements
(see Table 16 for an 8-cell example):
• A minimum of 2 cells must be connected to each
• A maximum of 12 cells can be connected to each
• The C0_ to C1_ cell inputs must always be popu-
• The remaining cells are populated between C1_ and
• All unused cell inputs must be shorted together,
When using DC power supplies to emulate battery cells,
set its output in the (n x 0.5V) to (n x 4.7V) range, where
n is the number of cells being emulated by the DC
power supply. Connect the power supplies between the
PACK_+ and PACK_- PCB pads.
When using actual battery cells, connect them across
the appropriate C#_ PCB pads, or route them through
the P3 and P103 shrouded headers. When connecting
the cells through the P3 and P103 headers, use switches
SW21, SW22, SW121, and SW122 to switch the battery
cells in and out of the system (see Figures 16a–19).
Figure 15a. MAX11068 EV Kit SMBus Ladder with Side (A) as Board 1
Figure 15b. MAX11068 EV Kit SMBus Ladder with Side (B) as Board 1
26_ _ ______________________________________________________________________________________
MAX11068 device.
MAX11068 device.
lated with a battery cell.
C2_, C2_ and C3_, and so on, until all cells are con-
nected.
using the appropriate JU2–JU11 or JU102–JU11
jumpers.
Cell Connections
The MAX11068 includes an I
cascading of up to 31 MAX11068 devices. The EV kit
facilitates device cascading by routing the I
system to headers J1, J2, J101, and J102. These head-
ers are used to cascade multiple EV kit boards together.
As shipped, the EV kit comprises two boards, a simple
SMBus ladder consisting of two MAX11068 devices.
To achieve a 31-device SMBus ladder, 16 EV kits are
needed, with only one of the boards on the 16th EV kit
being used. See Figures 15a and 15b for illustrations of
an EV kit SMBus ladder. See Tables 18–21 for J1, J2,
J101, and J102 pinouts.
Note: A single EV kit can be broken into two boards.
In doing so, an SMBus ladder can comprise only (A)
boards, only (B) boards, or a combination of both (A)
and (B) boards. When cascading EV kits, observe the
following:
• Connect the host controller (e.g., MINIQUSB com-
• Ensure that the 3in ribbon cable is installed across
• Use the provided 6in ribbon cable to connect the
mand module) to the J3 header of the lowest board
(board 1).
headers J2 and J101, except in the case of the last
EV kit on the SMBus ladder.
lower EV kit’s J102 header to the J1 header of the
next EV kit.
2
C bus system that allows
SMBus Ladder
2
C bus