MAX1535B Datasheet, PDF (4/14 Pages) Maxim Integrated Products – MAX1535B Evaluation Kit/MAX1535B Evaluation System

MAX1535B Evaluation Kit/
MAX1535B Evaluation System
ChargerSpecInfo()
ChargerSpecInfo() returns the Charger Specification
(0x0002) from the MAX1535B. This command is available
through the “Other Bitmapped Charger Registers...”
panel. Select Charger Spec Info by picking it from the
pulldown list located directly under the Other Bitmapped
Charger Registers... label. Issue a ChargerSpecInfo()
command by selecting the Read button. The returned
hexadecimal value is shown at the bottom of the panel.
AlarmWarning()
Alarm Warning is shown on the Other Bitmapped Charger
Registers... panel (Figure 2). Select Alarm Warning by
picking it from the pulldown list located directly under the
Other Bitmapped Charger Registers... label. Each of the
bits in the AlarmWarning() command word are shown
individually with a short description of the bit and a
checkbox. Select the checkboxes next to the bits for
which the software should write a 1; unselect the check-
boxes for a 0. Send the command to the MAX1535B by
selecting the Write button.
InputCurrent()
Input Current is shown on the Other Bitmapped Charger
Registers... panel (Figure 2). Select Input Current by
picking it from the pulldown list located directly under the
Other Bitmapped Charger Registers... label. Each of the
bits in the InputCurrent() command word are shown indi-
vidually with a short description of the bit and a check-
box. Select the checkboxes next to the bits for which the
software should write a 1; unselect the checkboxes for a
0. Send the command to the MAX1535B by selecting the
Write button.
Note: The default input-current-limit setting at POR is
256mA. All codes requesting input current greater than
11.004A result in an input-current overrange, limiting
the input current to 11.004A.
ManufacturerID()
ManufacturerID() returns the Manufacturer ID (0x004D)
from the MAX1535B. This command is available through
the Other Bitmapped Charger Registers... panel (Figure
2). Select Manufacturer ID by picking it from the pulldown
list located directly under the Other Bitmapped Charger
Registers... label. Issue a ManufacturerID() command by
selecting the Read button. The returned hexadecimal
value is shown at the bottom of the panel.
DeviceID()
DeviceID() returns the Device ID (0x0006) from the
MAX1535B. This command is available through the
Other Bitmapped Charger Registers... panel (Figure 2).
Select Device ID by picking it from the pulldown list
located directly under the Other Bitmapped Charger
Registers... label. Issue a DeviceID() command by
selecting the Read button. The returned hexadecimal
value is shown at the bottom of the panel.
Smart-Battery Command Panel
The software is capable of reading the registers of a
smart battery. The smart battery page of the software is
shown in Figure 3. The software only reads the registers
selected with checkmarks. By default, the registers are
automatically read once every two seconds. Disable this
feature by unselecting the Active Read: Battery checkbox
located on the Timer panel. Change the refresh time by
entering a new value into the Timer Interval edit box and
select the Set Interval button. When Auto Refresh is dis-
abled, read the battery by selecting the Refresh button.
Detailed Description of Hardware
The MAX1535B includes all the functions necessary to
charge a smart battery. The EV kit is capable of charg-
ing with a maximum current of 8.064A and a maximum
voltage of 19.2V. For more information on the operation
of the MAX1535B, refer to the Detailed Description sec-
tion of the MAX1535B data sheet.
Connecting a Smart Battery
The MAX1535B EV kit includes a 5-pin smart battery
connector. To connect a smart battery to the EV kit, turn
off power to the EV kit and connect the battery, making
sure to correctly orient the connectors.
Evaluating the MAX1535B Above 25V
To evaluate the MAX1535B with an input voltage
greater than 25V (up to 28V), capacitors C1, C2, C13,
and C14 must be replaced with higher voltage-rating
parts. Any capacitors that were installed in locations
C11, C12, C19, and C20 must also meet the higher
voltage rating.
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