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Description
Demonstration circuit 2043B is a lead-acid battery balancer
featuring the
LTC
3305. The LTC3305 balances up to four
®
lead-acid batteries connected in series and incorporates all
voltage monitoring, gate drive and fault detection circuitry.
The LTC3305 employs an auxiliary battery or an alternative
storage means to transfer charge to or from each individual
battery within the stack. There are two operating modes,
TIMER mode and CONTINUOUS mode, selected by the
MODE pin. In TIMER mode, once the balancing operation
is complete, the LTC3305 goes to a low power state for
a programmed time and then periodically rebalances the
BoarD photo
Figure 1. DC2043B Demo Board
DEMO MANUAL DC2043B
Lead Acid Battery Balancer
batteries. In CONTINUOUS mode, the balancing operation
continues even after the batteries are balanced to their
programmed termination voltage.
The LTC3305EFE is available in a 7mm × 7mm 38-lead
TSSOP surface mount package with exposed pad.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2043B
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Figure 2. Thermal Image of DC2043B
LTC3305EFE
dc2043bfa
1
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Table of Contents
Related Manuals for Linear Technology DC2043B
Summary of Contents for Linear Technology DC2043B
- Page 1 TIMER mode and CONTINUOUS mode, selected by the MODE pin. In TIMER mode, once the balancing operation L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear is complete, the LTC3305 goes to a low power state for Technology Corporation.
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Page 2: Performance Summary
DEMO MANUAL DC2043B performance summary Specifications are at T = 25°C SYMBOL PARAMETER CONDITIONS UNITS Battery Voltage Range 16.0 Termination Voltage Range TERM2 = 0, TERM1 = 0 ±5 ±20 TERMINATE Termination Voltage Range TERM2 = 0, TERM1 = 1 ±17.5... - Page 3 F04 2.0s/DIV A number of components are included on the DC2043B Figure 4. Steady State Battery Balancing Current to protect the circuit from damage when hot-plugging the battery connections to the board.
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Page 4: Quick Start Procedure
TVS diodes D135 to D138 are listed as “OPT” on the sche- on some of the power FETs can approach the maximum matic, and are not included on the DC2043B. However, a VGS rating of the FETs. Back-to-back Zener diodes (15V... - Page 5 DEMO MANUAL DC2043B QuicK start proceDure 7. Measure the voltage from the VH test point to ground. 10. Decrease PS1 and PS5 to 9.4V and observe that while The voltage should read approximately 1.52V. the BATX and BATY are off, the UVFLT LED is on.
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Page 6: Parts List
DEMO MANUAL DC2043B parts List ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components C1-C4, C11 CAP ., 4.7µF, X7R, 25V, 10%, 0805 MURATA, GRM21BR71E475KA73L C5, C6, C12-C16 CAP ., 10µF, X7R, 25V, 20%, 1206 TDK, C3216X7R1E106M160AB CAP ., 0.033µF, C0G, 50V, 5%, 0805, AUTOMOTIVE... - Page 7 CONN., HDR., MALE, 1x3, 2mm, THT, STR WURTH ELEKTRONIK, 62000311121 LABEL SPEC, DEMO BOARD SERIAL NUMBER BRADY, THT-96-717-10 MP1-MP4 STANDOFF , NYLON, SNAP-ON, 0.250" KEYSTONE, 8831 PCB1 PCB, DC2043B EAGLE ELECTRONICS, INC, 600-DC2043B XJP1-XJP4 CONN., SHUNT, FEMALE, 2 POS, 2mm WURTH ELEKTRONIK, 60800213421 dc2043bfa...
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Page 8: Schematic Diagram
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. - Page 9 DEMO MANUAL DC2043B schematic DiaGram 9.5V-15.5V 9.5V-15.5V 9.5V-15.5V 9.5V-15.5V dc2043bfa...
- Page 10 Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods.
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