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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 Analog
Devices, Inc. All other trademarks are the property of their respective owners.
Figure 2. Thermal Image of DC2043B
LTC3305EFE
dc2043bfb
1
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Table of Contents
Related Manuals for Analog Devices Linear Technology DC2043B
Summary of Contents for Analog Devices Linear Technology DC2043B
- Page 1 DEMO MANUAL DC2043B LTC3305EFE Lead Acid Battery Balancer DESCRIPTION Demonstration circuit 2043B is a lead-acid battery balancer batteries. In CONTINUOUS mode, the balancing operation featuring the 3305. The LTC3305 balances up to four continues even after the batteries are balanced to their ®...
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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 ±32.5 TERMINATE... - Page 3 DEMO MANUAL DC2043B OPERATING PRINCIPLE 1. There are no ON or OFF states. The balancing operation BATX continues even if the stack is in balance. The balanc- 5.00V/DIV ing operation is terminated only if the part is put into BATY 5.00V/DIV shutdown.
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Page 4: Quick Start Procedure
DEMO MANUAL DC2043B OPERATING PRINCIPLE During some hot-plug events, the gate-to-source voltage 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. - 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. 8.
- Page 6 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 TDK, CGA4J2C0G1H333J125AA C8, C9 CAP ., 0.01µF, C0G, 50V, 5%, 0805, AUTOMOTIVE...
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Page 7: Parts List
DEMO MANUAL DC2043B PARTS LIST ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Optional Circuit Components D135-D138 TVS DIODE 15VWM 24.4VC SMA DIODES INCORPORATED, SMAJ15A-13-F Hardware: For Demo Board Only E1-E7 TEST POINT, TURRET, 0.064" MTG. HOLE, 0.125" MILL-MAX, 2308-4-00-80-00-00-07-0 THICK PCB E8-E24 TEST POINT, TURRET, 0.094", MTG. - Page 8 DEMO MANUAL DC2043B SCHEMATIC DIAGRAM dc2043bfb 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.
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Page 9: Schematic Diagram
DEMO MANUAL DC2043B SCHEMATIC DIAGRAM 9.5V-15.5V 9.5V-15.5V 9.5V-15.5V 9.5V-15.5V dc2043bfb... - Page 10 DEMO MANUAL DC2043B DEMONSTRATION BOARD IMPORTANT NOTICE 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.
- Page 11 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Analog Devices Inc. DC2043B...