TPS53667

PWM1

Power

Stage

PMBus

CSP1

PWM2

Power

Stage

CSP2

Power

Stage

PWM6

CSP6

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCT PREVIEW Information. Product in design phase of

development. Subject to change or discontinuance without notice.

TPS53667

SLUSC40 – JULY 2016

TPS53667 6-Phase, D-CAP+, Step-Down, Buck Controller with NVM

and PMBus™ Interface for ASIC Power and High-Current Point-of-Load

Check for Samples: TPS53667

1

1 Features

1

•

8-bit Selectable BOOT Voltage via Pinstrap or

NVM: 0.5 V to 2.5 V (down to 5-mV Step)

•

1-, 2-, 3-, 4-, 5-, or 6- Phase Operation

•

PMBus™ System Interface for Telemetry of

Voltage, Current, Power, Temperature, and Fault

Conditions

•

1.8-V and 3.3-V PMBus Bias Compatible

•

Fault Reporting: Output Voltage, Output Current,

and Temperature

•

Configurable with Non-Volatile Memory (NVM) or

Resistor Pinstrap

•

16 Levels of Programmable OCP with Pinstrap or

NVM

•

Fast Transient with DCAP+™Control

•

Optimized Efficiency at Light and Heavy Loads

•

Support Pre-Bias Startup

•

8 Independent Levels of Overshoot Reduction

(OSR) and Undershoot Reduction (USR)

•

Driverless Configuration for Efficient High-

Frequency Switching

•

Compatible with CSD95490BQ5MC NexFET™

Power Stage

•

Accurate, Adjustable Voltage Positioning

•

300-kHz to 1-MHz Frequency Selections with

Closed-loop Frequency Control

•

Patented AutoBalance™ Phase Balancing

•

Dynamic Phase Shedding with Programmable

Current Threshold

•

Conversion Voltage Range: 4.5 V to 17 V

•

Small, 6 mm × 6 mm, 40-Pin, QFN, PowerPAD™

Package

2 Applications

•

Application-Specific Integrated Circuit (ASIC)

Power in Communications Equipment

•

High Density Power Solutions

•

Server Power

•

Smart Power Systems

3 Description

The TPS53667 is a high-current, multi-phase, step-

down controller. The device offers built-in non volatile

memory (NVM) and PMBus interface. It is fully

compatible

with

the

NexFET

power

stage

(CSD95490BQ5MC). The TPS53667 provides 8-bit

BOOT voltage selection covering output voltage from

0.5 V to 2.5 V, with steps as small as 5 mV, which is

ideal for high current application with accurate output

voltage setting. Advanced control features such as D-

CAP+ architecture with undershoot reduction (USR)

and overshoot reduction (OSR) provide fast transient

response,

lowest

output

capacitance,

and

high

efficiency. The TPS53667 also provides novel phase

interleaving strategy and dynamic phase shedding for

efficiency improvement at light loads. In addition, the

TPS53667

supports

the

PMBus

communication

interface with systems for telemetry of voltage,

current, power, temperature, and fault conditions.

Some of the configurations can be programmed by

pinstrap or PMBus and stored in non-volatile memory

to minimize the external component count.

The TPS53667 is offered in a space saving, thermally

enhanced 40-pin QFN package and is rated to

operate from –40°C to 125°C.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS53667

QFN (40)

6.00 mm × 6.00 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

Simplified Schematic