60-A Three-Phase Synchronous Buck Converter

(ACTIVE) PMP2277

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Description

The TPS40180 is a single synchronous buck controller that can be stacked for a multiphase output. The controller has an input voltage rating of 4.5 to 15 V for the chip VCC and 2 to 40 V for the power stage. It will work in many applications with 5, 12 and 24 V inputs. The controller can be used to make single output systems up to 8 phases. Current mode control uses the inductor DCR to minimize impacts on the efficiency. A current sense resistor could be used for improved accuracy. Additionally, the chip features a 700 mV-reference with better than 1% accuracy over temperature. This circuit uses three TPS40180s to create a three-phase synchronous buck. A buck is typically used when the output voltage is always lower than the input voltage. Key considerations for this design are high output current and synchronized switching. The TPS40180 provides a CLKIO pin that can be connected between devices to create up to 8 phases that are optimally shifted. The converter in this case is 12 V to 1.8 V @ 60 A.

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Parametrics
 PMP2277.1
(Output Voltage 1)
Vin (Min) (V)10.8
Vin (Max) (V)13.2
Vout (Nom) (V)1.5
Iout (Max) (A)60
Output Power (W)90
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBuck- Multiphase

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS40180  Single Phase Stackable Controller  Step-Down (Buck)  Sample & Buy View Design Kits & Evaluation Modules

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 940 11 Jan 2011 23
Design files (2)
Title Abstract Type Size (KB) Date Views
PDF 22 11 Jan 2011 15
PDF 123 11 Jan 2011 32


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