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DC721 - LTC3738CUHF and LTC3731CUH
Evaluation Kit
FEATURES
DC721 - LTC3738CUHF and LTC3731CUH Evaluation Kit
Disclaimer: Linear Technology cannot assume responsibility for use of any
circuitry other than circuitry entirely embodied in a Linear Technology
product. No circuit patent licenses are implied. Linear Technology reserves
the right to change the circuitry and specifications w ithout notice at any time.
TYPICAL APPLICATION
DESCRIPTION
Demonstration circuits 721A-A and 721A-B are high current
step-dow n converters for Intel VRM/VRD10 and
VRM9 processor pow er applications. The demo circuits
feature the current-mode PolyPhaseTM controllers
LTC3738CUHF and LTC3731CUH. The input voltage is
from 8V to 14V and the output voltage is controlled by
the VID setting. DC721A-A is a 6-phase LTC3738 and
LTC3731 supply that can provide up to 120A output current.
DC721A-B is a single LTC3738 3-phase 65A output
supply. Both LTC3738CUHF and LTC3731CUH controllers
are in the QFN packages to minimize the supply
footprint size and improve the thermal performance.
The LTC3738 controller has 6 VID pins to program the
output voltage according to Intel VRM9 or VRM/VRD10
requirement. Accurate active voltage positioning (AVP)
is implemented w ith LTC3738 to meet Intel?s tight load
line regulation requirement. Optional 0.1% external voltage
reference and external Op-Amp compensation circuits
are also available on DC721A-A and DC721A-B for
applications requiring <0.5% output voltage regulation
accuracy and optimum transient response.
PACKAGING
ORDER INFO
Part numbers ending in PBF are lead free. Please contact LTC marketing
for information on lead based finish parts.
Part numbers containing TR or TRM are shipped in tape and reel or 500 unit
mini tape and reel, respectively
Please refer to our general ordering information or the product datasheet
for more details
Evaluation Kits
APPLICATIONS
SIMULATE
To simulate selected Linear Technology products, please dow nload
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regulators, over 200 op amp models, as w ell as resistors, transistors and
MOSFET models.
For other simulation tools, visit our Design Simulation and Device Models
page.
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Part
Number Description Price
DC721A-
A
LTC3738CUHF LTC3731CUH | 6-Phase, 120A High
Efficiency Pow er Supply, 8 to 14Vin, VRM9.X / 10.X
@ 120A
DC721A-
B
LTC3738CUHF LTC3731CUH | 3-Phase, 65A High
Efficiency Pow er Supply, 8 to 14Vin, VRM9.X / 10.X
@ 65A
$190.00
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Docum entation
Reference Design
DC721 - LTC3738CUHF and
LTC3731CUH Evaluation Kit
