ICS1735 Evaluation Board Galaxy Power, Inc.'s ICS1735 Evaluation

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ICS1735 Evaluation Board Galaxy Power, Inc.'s ICS1735 Evaluation

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ICS1735EB
ICS1735 Evaluation Board
Galaxy Power, Inc.'s ICS1735 Evaluation Board helps provide practical evaluating ICS1735 conditioning/charge method lead acid batteries. evaluation board provides some circuit options interfacing external regulating current voltage charging source building adjustable regulating source charging 12V, lead acid batteries. board provides constant current discharge circuit, jumpers. added .51, resistor 2N3903 transistor provides constant amplitude 1.25A discharge pulses conditioning battery through charging process. amplitude discharge current independent battery voltage increased decreased changing value resistor. amplitude current typically 0.64V/.XX. Jumper provisions provided selecting charge time performance improvement evaluations. board includes bread- boarding area consisting matrix holes user added components. Before using ICS1735 Evaluation Board, user should review ICS1735 data sheet become familiar with operation board purchased either ICS1735EB ICS1735EB/CVR. version provides parts user make adjustable, regulating charging source.
Table
1N5231B (5.1V) 1N5242B (12V) 1N5252B (24V) *User provides associated components (SD103A schottky diode made Diodes Inc.) ICS1735EB/CVR contains parts configuring LM317T adjustable current voltage regulating charging source board. charging current value forward voltage drop 1N5822. maximum current LM317T provides this on-board application 1.25A. this application with LM317 regulates voltage difference about 1.35 volts between pins. With 1N5822 voltage drop equal 1.25A, (1.35V-.4V)/1.25A makes .75, resistor. With ICS1735EB/CVR user provided components installed, connect only voltmeter between +BAT terminal terminal board apply regulated input power Table below. About minutes after lights, adjust potentiometer until pulsed voltage +BAT terminal reads required charge voltage battery manufacturer.
Cells
Battery Type
Table
Cells Battery Type (Reg. Input)
Setting-up Your Application
Refer evaluation board schematic diagram. ICS1735EB interface external regulating current voltage source, both current voltage external source must according battery manufacturer's requirements. charge signal options provided control external charging source. There output which uses logic high switching external charging source another signal which uses logic switching external charging source. installed provide on-board adjustable current voltage regulator, 1N52XXB type diode must installed user Table regulated input supply required Table when using board charging source.
Whenever input power applied board, ICS1735 starts charge sequence. logic applied RESET terminal board holds ICS1735 reset outputs stay off. When RESET removed logic high open, releasing board's push button reset switch SW1, charge sequence begins. amplitude discharge current increased decreased changing value resistor. amplitude current typically 0.64V/.XX. Normally amplitude discharge pulse same amplitude current setting charging source.
ICS1735 Evaluation Board
Table Charge Stages
Max. Fast Charge
Jumper
Board Design Considerations
Maint. Charge Duty Cycle
pulse, rests pulse, rests pulse, rests When designing current voltage regulator battery charger, there several important considerations address before starting design board layout. general, linear chargers less complex more cost effective, less efficient than switch mode chargers. Size power dissipation restraints warrant switch mode type. input power supply, charging source, pulse discharge power circuit, keep physical separation between power return (ground) minimum minimize field effects, particularly switch mode type circuits used input supply and/or current source. Keep ICS1735 control circuits outside power return loops described above. These precautions prevent fields coupled noise from disturbing normal operation. Normal care must exercised minimize noise coupling ground bounce. Prevent wires connector locations from adding excessive resistance inductance both power control circuits. When designing printed circuit board, make sure power control grounds power traces wide practical. Locate bypass noise reduction capacitors right very close pins their ground pin(s). sure connect power control grounds together close negative terminal that connects negative lead battery. Galaxy Power Incorporated wants help create successful battery charging solution using ICS1735. need assistance from sales, technical help, applications information please contact headquarters: Galaxy Power, Inc. 2500 Eisenhower Avenue Valley Forge, 19482 Phone: (610) 676-0188 Fax: (610) 676-0189
Float Charge Duty Cycle
pulse, rests pulse, rests pulse, rests
None
*The minute charge time option intended charging battery
that already least full. Charging lead acid battery from empty full this short time involves considerations beyond scope this document.
Table Termination Select
Termination Method *Voltage slope termination Timer termination only Jumper DTSEL None
Requires additional circuitry-contact Galaxy Power
Operation
Before running evaluations with board, ensure that board initialized required.
jumper desired fast charge time. DTSEL jumper Table applicable, calculate another value using procedure described page amplitude discharge current same amplitude current setting charging source.
Visit: www.galaxypower.com product info.
e-mail contacts
120800
Ordering Information
ICS1735EB/CVR
Ordering Option blank populated board /CVR populated board with regulator parts user installation Device type: ICS1735 Evaluation Board
ICS1735EB
ICS1735EB ICS1735EB/CVR SCHEMATIC DIAGRAM
LM317 .047uF ICS1735 DCHG 6CLN 7CTSEL 8VSS
XREF1 XREF2 TENB
1N5822
.1uF
+CUR
2N7000 2N7000 (jumper)
R16*
SD103A +BAT
2N3903
.047uF 4.7uF 100pF 330k
CTSEL
DTSEL (TENB)
RESET
NOTES: Kit,user installs locations provided User provides/installs. (see Table Zener type) Galaxy Power installed component. Reg. input Table logic level LM340,AN7805 equivalent requires Heat Sink. *Component used this application.
ICS1735 Evaluation Board
NOTES

ICS1735 Evaluation Board Galaxy Power, Inc.'s ICS1735 Evaluation

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