MAX11068EVKIT+ Maxim Integrated Products, MAX11068EVKIT+ Datasheet - Page 24

• 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
ribbon cable between headers J2 and J101. Each board
can also be cascaded to another EV kit, allowing for up
to 31 MAX11068 devices on a single SMBus ladder.
Refer to the I
section in the MAX11068 IC data sheet.
To distinguish between the two separate (A) and (B)
boards that make up the EV kit, the reference designa-
tors and IC pin net names used on the PCB and in the
schematics follow the suffix scheme below:
The suffix represents either the (A) side of the EV kit or
the (B) side of the EV kit. The boards are labeled in the
upper-right corner with (A) or (B).
Net_Names:
• MAX11068 IC pin net names contain the IC pin
• MAX11080 IC pin net names contain the IC pin
• All other net names contain an A or _A suffix if asso-
Reference_Designators:
• Board (A) has components numbered from 0 to 99.
• Board (B) has components numbered from 100 to
Example: Component R1 on board (A) is the same cir-
cuit element as R101 on board (B).
To start up the EV kit, apply at least 6V across the
PACKA+ and PACKA- PCB pads and drive the SHDNINA
net high by one of the methods that follow.
Software_SHDNINA_Control:
1) Verify that a shunt is not installed on jumpers JU12,
2) Install shunts on jumpers JU25, JU26, JU125, and
3) Using a USB cable, connect the MINIQUSB com-
4) Connect the MINIQUSB command module to the EV
5) Start the EV kit software.
6) Ensure that the SHDN checkbox on the MAX11068
Note: The SHDNINA net is pulled up to 3.3V by the
MINIQUSB’s K1 GPIO pin.
24_ _ ______________________________________________________________________________________
name with an A or B suffix.
name with a CA or CB suffix.
ciated with the (A) side, and a B or _B suffix if asso-
ciated with the (B) side.
199.
JU21, JU112, and JU121.
JU126.
mand module to a PC.
kit’s J3 header, using the MINIQUSB-XHV board.
software is not checked.
2
C/SMBus Ladder Initialization Sequence
Device Startup
Hardware_SHDNINA_Control:
1) Verify that shunts are not installed on jumpers JU25,
2) Install shunts on jumpers JU12, JU21, JU112, and
3) Using a USB cable, connect the MINIQUSB com-
4) Connect the MINIQUSB command module to the EV
Note: The SHDINA net is pulled up to the MINIQUSB’s
3.3V (VDD) supply.
Once SHDNINA is pulled high, the MAX11068 VAA regu-
lator is enabled and the device continues with the device
power-up sequence. Refer to Figure 20 in the IC data
sheet for further details. Once the power-up sequence
is complete, the MAX11068 device is fully functional. If
additional EV kit modules are connected to the SMBus
ladder, their power-up sequence is initiated once the
VDDU_ signal of the lower module reaches regulation.
Note: This startup sequence assumes that side (A) is
board 1 in the SMBus ladder, although the same startup
sequence can be applied to an SMBus ladder that uses
side (B) as board 1, where board 1 is the board con-
nected to the MINIQUSB command module.
When evaluating the EV kit, the cell stack voltage is
provided by cascading 2 to 12 battery cells between the
C0_A-to-C12_A and C0_B-to-C12_B nodes, or by apply-
ing DC voltages between PACKA+ and PACKA- and
between PACKB+ and PACKB-. The following sections
explain how to configure the EV kit and connect the bat-
tery cells.
A ribbon cable must be connected between headers J2
and J101 when evaluating the entire EV kit.
1) Configure switch SW1 and SW101 according to
2) When using a DC power supply, the cascaded 2kI
3) Configure jumpers JU2–JU11, and JU102–JU111
JU26, JU125, and JU126.
JU121.
mand module to a PC.
kit’s J3 header, using the MINIQUSB-XHV board.
Table 14.
resistors provide divided-down voltages to the cell
input pins. This, in effect, emulates the connection of
12 battery cells.
according to the number of battery cells (actual
or emulated) that are connected to the system
(see Table 15).
Cell Configuration
Battery Cells