Synchronous Step-Down Regulator with PMBus Delivering 0.9V-3.3V at 20A Reference Design

(ACTIVE) PMP6997

Description & Features

Technical Documents

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Description

PMP6997 is a single-phase synchronous switching regulator with PMBus accepting an input voltage range of 4.5Vin to 14Vin and providing an output voltage of 1.2Vout capable of supplying 20A of current. This design uses the TPS40400 synchronous buck controller with PMBus and two CSD86350Q5D power block MOSFETs. Electrical and thermal tests results are provided for 12Vin, 1.2Vout, and 20A output. An on board dynamic load allows rapid load transients to be tested. Additionally, an on board TLC555 timer can be used to demonstrate external synchronization.

Features
  • PMBus with Telemetry
  • Programmable Soft-Start
  • Programmable Overcurrent Protection
  • Adaptive Anti-Cross Conduction Scheme
  • Programmable UVLO

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Bill of Materials (BOM)

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Parametrics
 PMP6997.1
(Output Voltage 1)
Vin (Min) (V)4.5
Vin (Max) (V)14
Vout (Nom) (V)1.2
Iout (Max) (A)20
Output Power (W)24
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBuck- Synchronous

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD86350Q5D  Synchronous Buck NexFET™ Power Block MOSFET Pair  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
TLC555  2.1-MHz, 250-µA, Low-Power Timer  Clock & timing  Sample & Buy View Design Kits & Evaluation Modules
TPS40400  3.0V - 20V, 30A, Synchronous Buck Controller with PMBus™, including Telemetry  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD86350Q5D LSON-CLIP (DQY)| 8 Download Download
TLC555 Download Download
Download Download
Download -
Download Download
TPS40400 Download -

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 428 23 Dec 2011 8
Selection guides (1)
Title Abstract Type Size (KB) Date Views
Multiple Files   04 Nov 2015 233
Design files (4)
Title Abstract Type Size (KB) Date Views
ZIP 433 23 Dec 2011 6
PDF 602 23 Dec 2011 9
PDF 31 23 Dec 2011 12
PDF 119 23 Dec 2011 8

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