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DESCRIPTION
The DC2733 is a demonstration system for the
65V Dual Electronic Circuit Breaker with Current Monitors.
The LTC4249 provides dual independent 1.2A, 75mΩ
circuit breakers that can function independently or work
together in parallel. Each circuit breaker channel has its
own enable, ready, and IMON pins.
The DC2733 demo board gives access to both channels of
the LTC4249, including the independent RDY and IMON
outputs and the EN inputs. Resistors at the IMON pins set
the circuit breaker thresholds as well as the IMON current-
to-voltage gains. The IC draws power from the IN1 input.
BOARD PHOTO
65V Dual Electronic Circuit Breaker
LTC
4249,
®
SIGNAL ACCESS TURRETS
ON/OFF PUSHBUTTON
DEMO MANUAL DC2733A
with Current Monitors
DC2733 Board Features
• Demonstrate dual LTC4249 circuit breaker channels
• Monitor each channel current with IMON
• Gang multiple parallel channels for larger currents
• Convenient on-board pushbutton enable control
DC2733 Hardware Required
• DC2733 board
• Input power supply between 6V and 65V
• Two 1.2A loads
Design files for this circuit board are
All registered trademarks and trademarks are the property of their respective owners.
LED INDICATORS
LTC4249
available.
Rev. 0
1
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Table of Contents
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Summary of Contents for Analog Devices Linear ADI Power LTC4249
- Page 1 DEMO MANUAL DC2733A LTC4249 65V Dual Electronic Circuit Breaker with Current Monitors DESCRIPTION The DC2733 is a demonstration system for the 4249, DC2733 Board Features ® 65V Dual Electronic Circuit Breaker with Current Monitors. • Demonstrate dual LTC4249 circuit breaker channels The LTC4249 provides dual independent 1.2A, 75mΩ...
- Page 2 DEMO MANUAL DC2733A PERFORMANCE SUMMARY Specifications are at T = 25°C PARAMETER CONDITIONS UNITS IN1 and OUT1 Operating Voltage Range Referenced to GROUND IN2 and OUT2 Operating Voltage Range Referenced to GROUND (INn - OUTn) Channel off. Reverse voltage not permitted. INn Forward Current Forward current flows from INn to OUTn INn Reverse Current...
- Page 3 DEMO MANUAL DC2733A QUICK START PROCEDURE The LTC4249 is a positive voltage circuit breaker. It has Table 1. Jumper Summary two independent 75mΩ switches that turn on when their JUMPER SETTING COMMENT associated ENn pin is high, and turn off either when ENn Connected The LTC4249 EN1 input is connected to (DEFAULT)
- Page 4 DEMO MANUAL DC2733A QUICK START PROCEDURE It is also possible to use channels in parallel, as shown in Figure 2. Channels will share current, but remember that channel impedances are not perfectly matched, so cur- rents will share slightly unevenly. When the circuit breaker CURRENT FLOW trips it will trip in one channel first, followed quickly by...
- Page 5 DEMO MANUAL DC2733A QUICK START PROCEDURE In addition to controlling the circuit breaker, the IMON pins For this reason V(OUT) must always be less than or equal can be used by an external circuit to read channel current. to V(IN). To prevent potential backward flowing current use two switches in series, back-to-back, as shown in The IMON pin voltage represents the current flowing in Figure 4.
- Page 6 DEMO MANUAL DC2733A SCHEMATIC DIAGRAM Rev. 0...
- Page 7 Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
- Page 8 Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc. (“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY.
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