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Description
Demonstration circuit 2066A is a dual-output, high ef-
ficiency, high density, µModule regulator with 4.5V to
16V input range. Each output can supply 18A maximum
load current. The demo board has a
regulator, which is a dual 18A or single 36A step-down
regulator with digital power system management. Please
see the LTM4677 data sheet for more detailed information.
DC2066A powers up to default settings and produces power
based on configuration resistors without the need for any
serial bus communication. This allows easy evaluation of
the DC/DC converter. To fully explore the extensive power
system management features of the part, download the
GUI software LTpowerPlay™ onto your PC and use LTC's
2
I
C/SMBus/PMBus dongle DC1613A to connect to the
BoarD photo
Dual 18A or Single 36A µModule Regulator
With Digital Power System Management
LTM
4677
µModule
®
Figure 1. Dual-Output LTM4677/DC2066A Demo Circuit
DEMO MANUAL DC2066A
board. LTpowerPlay allows the user to reconfigure the part
on the fly and store the configuration in EEPROM, view
telemetry of voltage, current, temperature and fault status.
GUI Download
The software can be downloaded from:
http://www.linear.com/ltpowerplay
For more details and instructions of LTpowerPlay, please
refer to LTpowerPlay GUI for LTM4677 Quick Start Guide.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2066A
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.
LTM4677EY
dc2066af
1
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Table of Contents
Related Manuals for Linear Technology LTM4677EY
Summary of Contents for Linear Technology LTM4677EY
- Page 1 L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear GUI software LTpowerPlay™ onto your PC and use LTC’s Technology Corporation. All other trademarks are the property of their respective owners.
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Page 2: Performance Summary
Demonstration circuit 2066A is easy to set up to evaluate 6. Once the proper output voltages are established, adjust the performance of the LTM4677EY. Refer to Figure 2 for the loads within the operating range and observe the the proper measurement equipment setup and follow the output voltage regulation, ripple voltage and other procedure below. - Page 3 DEMO MANUAL DC2066A Quick start proceDure OUT1 OUT0 – – LOAD1 LOAD0 0A TO 18A 0A TO 18A OUT1 OUT0 – – – 4.5V TO 16V DC2066A F02 – Figure 2. Proper Measurement Equipment Setup – Figure 3. Measuring Output Voltage Ripple dc2066af...
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Page 4: Usb Cable
DEMO MANUAL DC2066A Quick start proceDure Connecting a PC to DC2066A You can use a PC to reconfigure the power management ing parameters, the fault log, fault responses, GPIOs and features of the LTM4677 such as: nominal V , margin other functionalities. - Page 5 DEMO MANUAL DC2066A Quick start proceDure 0A TO 4.5A 0A TO 4.5A LOAD STEP LOAD STEP OUT0 OUT1 (20MHz BW) (20MHz BW) 20mV/DIV 20mV/DIV 50µs/DIV 50µs/DIV Figure 7. Output Voltage V vs Load Current Figure 8. Output Voltage V vs Load Current OUT0 OUT1 = 1.0V), Measured by 1X Probe on C...
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Page 6: Ltpowerplay Software Gui
You can use LTpowerPlay to provides an automatic update feature to keep the software evaluate Linear Technology ICs by connecting to a demo current with the latest set of device drivers and documenta- board system. LTpowerPlay can also be used in an offline tion. - Page 7 DEMO MANUAL DC2066A Ltpowerplay Quick start GuiDe The following procedure describes how to use LTpowerPlay to monitor and change the settings of LTM4677. 1.Download and install the LTpowerPlay GUI: http://linear.com/ltpowerplay 2. Launch the LTpowerPlay GUI. a. The GUI should automatically identify the DC2066A. The system tree on the left hand side should look like this: b.
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Page 8: Parts List
RES., CHIP, 6.34k, 1%, 0603 VISHAY, CRCW06036K34FKEA R72, R73 RES., CHIP, 4.99k, 1%, 0603 NIC, NRC06F4991TRF I.C., LTM4677EY#PBF LINEAR TECH., LTM4677EY#PBF I.C., EEPROM SERIAL-I C, 2k-BIT, I.C., TSSOP-8 MICROCHIP, 24LC025-I/ST R2, R22 RES., CHIP, 17.8k, 1%, 0603 VISHAY, CRCW060317K8FKEA C1, C14 CAP., X7R, 1.8nF, 25V, 5%, 0603... -
Page 9: Schematic Diagram
DEMO MANUAL DC2066A schematic DiaGram dc2066af... - Page 10 DEMO MANUAL DC2066A schematic DiaGram dc2066af...
- 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.
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