Connection Descriptions

TB1

DC+

Charger supply (DC) 30V MAX

DC–

Ground from charger supply and low

sideofsystemload

TB2

BAT+

Positive battery terminal

BAT–

Negative battery terminal

TEM–

Thermistor connection (negative)

TEM+

Thermistor connection (positive)

JP1 QSEL

Charge algorithm select

JP2 DSEL

Display mode select

JP3 TSEL

Charge algorithm select

JP4 IGSEL

Minimum current select

JP5

Number of cells

Fixed Configuration

The DV2031S2 board has the following fixed character-

istics:

from the supply at connector TB1. TB1 can accept a

maximum of 30VDC. The minimum charging volt-

age for two cells is 10VDC, and the minimum

charging voltage for six cells is 22VDC.

LED1 and LED2 indicate charge status.

LED3 indicates a charge-pending or fault condition.

Charge begins on the later application of

1.

The battery

2.

Supply voltage

The onboard regulator supplies a fast charge cur-

The number of cells can be changed within

board-defined parameters, as described below in

“Jumper-Selectable Configuration.”

The switching frequency of the PWM control is

100kHz.

The regulated current is controlled by the value of

I

V

R

CHG

SNS

=

025

.

ment is 0.10

Ω. This resistor can be changed de-

pending on the application. The suggested maxi-

board is 2.5A with an accuracy of

±10%.

The thermistor provided is the Philips

2322–640–63103. With this thermistor connected

between TEM+ and TEM–, the temperature fault

cutoff) = 47°C.

Jumper-Selectable

Configuration

The DV2031S2 must be configured as follows:

DSEL (JP2) selects the LED display options as de-

scribed in Table 1 on the following page.

TSEL (JP3) and QSEL (JP1) select the charge algo-

rithm as shown in Table 2 on the following page.

JP4

Fixed-Pulse

Average Current

L

10

II

COND

MAX

210

=

H

20

II

COND

MAX

420

=

None

30

II

COND

MAX

830

=

As indicated in the Jumper Configuration Diagram,

JP5 configures the board for the number of

lead-acid cells.

2

DV2031S2

Rev. B Board