ICS1700AEB Galaxy Power, Inc., ICS1700AEB Datasheet

ICS1700AEB

Manufacturer Part Number

ICS1700AEB

Description

Ics1700a Evaluation Board.

Manufacturer

Galaxy Power, Inc.

Datasheet

1.ICS1700AEB.pdf (7 pages)

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ICS1700A Evaluation Board

General Description

The ICS1700A Evaluation Board allows quick evaluation of the

ICS1700A Charge Controller for Nickel-Cadmium and Nickel-

Metal Hydride Batteries. The evaluation board provides the

designer an opportunity to both test the ICS1700A and a fast

charge battery charger. The board is self-contained and has

provisions for interfacing with an external constant current source

to charge a battery.

The board includes resistors that are user-installed to customize

operation for the desired charge rate, discharge pulse current, and

number of cells in the battery pack. The board has a 5V regulator

that provides power to the ICS1700A and the LED display. The

board also has a breadboarding area consisting of a matrix of holes

for user added components.

Before using the ICS1700A Evaluation Board, GPI recommends

the user review the ICS1700A data sheet to become familiar with

the operation of the controller.

Setting-up the Board for your

Application

Refer to the evaluation board schematic diagram. The ICS1700A

requires that the battery voltage is normalized to the voltage of one

cell, or about 1.2V. To do this, resistors must be installed in the

locations marked R6 and R8. The appropriate values can be

selected from Table 1. An assortment of resistors is provided with

the board.

If the evaluation board is used with battery packs containing more

than eight cells, the resistors can be determined by counting the

number of cells to be charged in series. Then choose either R6 or

R8 and solve for the other resistor using:

The ICS1700A controller has an internal 2.0V reference used to

detect the removal of the battery from the charging system. For

most batteries, the maximum normalized battery voltage at the VIN

pin at full charge is 1.7 to 1.8V. The voltage at VIN is compared to

the 2.0V reference voltage when the current source is turned on. If

the voltage at VIN is greater than the 2.0V reference, the

ICS1700A assumes the battery has been removed and the

ICS1700A indicates a fault condition by turning on the BF LED,

and shuts down.

When power is applied to the board, the controller will start a

charge sequence unless a logic low is applied to the RESET

terminal. When RESET is removed by a logic high or open, a

charge sequence will begin.

R8 = R6* (# of cells -1) or R6 =

Cells

Table 1

Open

2.0k

1.0k

3.0k

2.0k

1.3k

ICS1700AEB

(# of cells -1)

Short

2.0k

3.0k

9.1k

12k

10k

12k

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ICS1700AEB Summary of contents

Page 1

... Refer to the evaluation board schematic diagram. The ICS1700A requires that the battery voltage is normalized to the voltage of one cell, or about 1.2V this, resistors must be installed in the locations marked R6 and R8. The appropriate values can be selected from Table 1. An assortment of resistors is provided with the board. ICS1700AEB Table 1 Cells R6 1 Open 2 2 ...

Page 2

ICS1700A Evaluation Board The board provides several low value resistors that may be used to set the amplitude of the discharge pulse. The resistors can be installed in any or all of the locations labeled R1, R2, or R3. The ...

Page 3

Operation Before applying power to the board, ensure that the board is properly initialized. Set SW1-1 and SW1-2 for the correct charge rate. Check to make sure the divider resistors R6 and R8 are of the correct value to normalize ...

Page 4

... Galaxy Power, Incorporated wants to help create a successful battery charging solution using the ICS1700A. If you need technical advice or applications information, call the Intelligent Charging Solutions hotline at GPI, (610) 676-0188 x-277. Ordering Information ICS1700AEB Device type: ICS1700A Evaluation Board 4 ...

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ICS1700AEB Galaxy Power, Inc., ICS1700AEB Datasheet

ICS1700AEB

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ICS1700AEB Summary of contents

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