5V input; 6 Phase High Efficiency Synchronous Buck; 0.9V 120A output
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The PMP6845 reference design uses three TPS40140's to control 6 Synchronous Buck Phases. Main switch pair for each phase is the dual CSD86350Q5D. The optional added CSD16325Q5 for the low side enhances efficiency, especially at full load. Efficiency is 87.5% at full load and over 90% for loads from 20 thru 80A. Electrical and Thermal test results shown for both with and without the added CSD16325Q5. An on board dynamic load allows rapid load transients to be tested.

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(Output Voltage 1)
Vin (Min) (V)4.5
Vin (Max) (V)5.5
Vout (Nom) (V).9
Iout (Max) (A)120
Output Power (W)108
Input TypeDC
TopologyBuck- Synchronous
Buck- Multiphase

TI Devices (3)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD16325Q5  25V, N ch NexFET MOSFETâ„¢, single SON5x6, 2.2mOhm  MOSFETs  Sample & Buy Not Available
CSD86350Q5D  25V, Nch synchronous buck NexFET MOSFETâ„¢, SON5x6 PowerBlock, 40A  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
TPS40140  Stackable 2 Channel Multiphase or 2 Channel Independent Output Controller  Step-down (buck) regulators  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD16325Q5 Download Download
CSD86350Q5D LSON-CLIP (DQY)| 8 Download Download
TPS40140 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 327 14 Sep 2011
Design files (3)
Title Type Size (KB) Date
ZIP 570 14 Sep 2011
PDF 75 14 Sep 2011
PDF 229 14 Sep 2011

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