Advertisement
Quick Links
DESCRIPTION
Demonstration circuit 2442A features the
current Hot Swap controller. The LTC4282 is well suited
to high power applications because the precise monitor-
ing capability and accurate current limiting reduces the
extremes in which both loads and power supplies must
safely operate. Nonvolatile configuration allows for flex-
ibility in the autonomous generation of alerts and response
to faults. The LTC4282 provides a rich set of features to
support Hot Swap applications including:
12- to 16-Bit ADC Monitors Current, Voltage, Power
n
and Energy
Controls Two Sets of Parallel MOSFETs for High
n
Current Applications
VARIABLE
POWER
SUPPLY
DEMO MANUAL DC2442A
200A Hot Swap Controller
2
LTC
4282
high
I
C/SMBus Interface
®
n
Nonvolatile Configuration and Logging Functions
n
Generates Alerts on ADC Measurements Outside
n
Limits
Software Adjustable Current Limit with Foldback
n
Three General Purpose Input/Outputs
n
Available in a 32-pin 5mm × 5mm QFN package, the
LTC4282 is showcased on DC2442A configured in a
"Low Stress Staged Start" configuration for a 12V/200A
application.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2442A
L, LT, LTC, LTM, Linear Technology, the Linear logo and LTpowerPlay are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
Figure 1. Basic Test Setup
Low Stress Staged Start
LTC4282
TEST
LOAD
dc2442a F01
dc2442af
1
Advertisement
Related Manuals for Linear Technology DC2442A
Summary of Contents for Linear Technology DC2442A
- Page 1 Controls Two Sets of Parallel MOSFETs for High http://www.linear.com/demo/DC2442A Current Applications L, LT, LTC, LTM, Linear Technology, the Linear logo and LTpowerPlay are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TEST...
-
Page 2: Performance Summary
DEMO MANUAL DC2442A PERFORMANCE SUMMARY Specifications are at T = 25°C PARAMETER CONDITIONS VALUE Input Supply Voltage Range 2.9V to 33V Nominal Operating Voltage 12.0V Overvoltage Lockout Nominal 15.0V Undervoltage Lockout Nominal 11.1V Output Current Limit Nominal 207A Maximum Load Capacitance Nominal 20,000μF... - Page 3 DEMO MANUAL DC2442A QUICK START PROCEDURE Table 3. LED Indicators NOMENCLATURE DESCRIPTION D1 (Green) Input Power Indicator D2 (Green) Output Power Indicator ALERT D5 (Red) ALERT Pin Logic Low D6 (Green) Serial Clock Active D7 (Green) Serial Data Active GPIO3...
- Page 4 45V absolute maximum operating voltage for the V ing the output during turn on and the other channel is the pin. The DC2442A is populated for +12V operation and is bypass channel which turns on only when the power to configured for a “Low Stress Staged Start”...
- Page 5 JUMPER NAME POSITION as cause a fire hazard. The DC2442A is setup to operate in a 12V system at current INTV levels up to 200A. At 200A, the bypass channels MOSFETs ADR0 are dissipating only 500mW each. No additional airflow is...
- Page 6 Stress Staged Start configuration with specific settings, product environment. It provides unprecedented control which support a 200A application. Changing the LTC4282’s over the Linear Technology chips on the I C bus. Use it programming on the DC2442 is strongly discouraged to during board bring-up to tune and optimize the power ensure safety and proper operation of the board.
- Page 7 Current limit has been adjusted to the lowest value to minimize power dissipation in the sense resistors. Increasing this will change the current limit as well as increase the power dissipation in the MOSFETs. Figure 3. DC2442A Demo Board Connected to DC1613 I C-to-USB Converter dc2442af...
- Page 8 C adapter interfaces the PC run- Launch the LTpowerPlay GUI on the PC. The software ning LTpowerPlay to the DC2442A board. Connect the identifies the DC1613 controller, then the DC2442A board, DC1613 adapter to the PC through a USB cable, and...
- Page 9 On the left is the System Tree pane, ister pane displaying all of the configuration registers displaying a list of all Linear Technology devices identified available on the selected device. This view shows all of on the I C bus.
- Page 10 DEMO MANUAL DC2442A SOFTWARE CONTROL WITH LTpowerPlay Update registers contents by clicking or typing to change In the upper right corner of LTpowerPlay is the Chip the desired registers, then selecting the “PC to RAM” but- Dashboard pane, displaying a graphical representation of ton in the top toolbar.
- Page 11 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 12 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.
- Page 13 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Analog Devices Inc. DC2442A...
Need help?
Do you have a question about the DC2442A and is the answer not in the manual?
Questions and answers