DV2004S1_14 Datasheet, PDF (1/7 Pages) Texas Instruments – Fast-Charge Development System

DV2004S1/ES1/HS1
Fast-Charge Development System
Control of On-Board P-FET
Switch-Mode Regulator
Features
ä bq2004/E/H fast charge control evaluation and
development
ä Charge current sourced from an on-board
switch-mode regulator (up to 3.0 A)
ä Fast charge of 4 to 10 NiCd or NiMH cells and one
user-defined selection
ä Fast charge termination by delta temperature/delta
time (∆T/∆t), negative delta voltage (-∆V) or peak
voltage detect, maximum temperature, maximum
time, and maximum voltage
ä -∆V/peak voltage detect, hold-off, top-off, maximum
time, and number of cells are jumper-configurable
ä Programmable charge status display
ä Discharge-before-charge control with push-button
switch or auto discharge-before-charge with jumper
ä Inhibit fast charge by logic-level input
General Description
The DV2004S1/ES1/HS1 Development System provides
a development environment for the bq2004/E/H Fast
Charge IC. The DV2004S1/ES1/HS1 incorporates a
bq2004/E/H and a buck-type switch-mode regulator to
provide fast charge control for 4 to 10 NiCd or NiMH
cells.
The fast charge is terminated by any of the following:
∆T/∆t, -∆V or peak voltage detect, maximum tempera-
ture, maximum time, maximum voltage, and inhibit
command. Jumper settings select the voltage termina-
tion mode, the hold-off, top-off, and maximum time lim-
its, and automatic discharge-before-charge.
The user provides a power supply and batteries. The user
configures the DV2004S1/ES1/HS1 for the number of
cells, voltage, charge termination mode, and maximum
charge time (with or without top-off), and commands dis-
charge-before-charge with push-button switch S1.
Please review the bq2004/E/H data sheet before using
the DV2004S1/ES1/HS1 board.
Connection Descriptions
J1
THERM
SNS
tor
BAT+
LOAD
GND
DC
Thermistor connection
Negative battery terminal and thermis-
connection
Positive battery terminal and high side
of discharge load
Low side of discharge load
Ground from charger supply
DC input from charger supply
SLUU016A - 3/99 revised 8/2002
Rev. C Board
1