TPS40425RHAR

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Texas Instruments

DUAL OUTPUT, 2-PHASE, STACKABLE PMBUS SYNCHRONOUS BUCK DRIVERLESS CONTROLLER

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TPS40425RHAR

Active

Texas Instruments

DUAL OUTPUT, 2-PHASE, STACKABLE PMBUS SYNCHRONOUS BUCK DRIVERLESS CONTROLLER

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Description Specifications Series Pricing CAD Documents

Description

General part information

TPS40425 Series

The TPS40425 is a PMBus, synchronous buck, driverless controller. It operates in non-smart power mode in factory default setting, and it can operate in smart power mode after PMBus programming and power reboot. It can be configured as dual-output or 2-phase. It is also stackable up to 4 phases to support load current as high as 120 A. Interleaved phase shift for 2-, 3-, or 4-phases reduce the input and output ripples therefore reducing input and output capacitance.

The wide input voltage range can support 5-V and 12-V intermediate supply buses. The 0.5% reference voltage satisfies the need of precision voltage to the modern ASICs.

Using the PMBus standard, the TPS40425 device can program reference voltage, fault limit, UVLO threshold, soft-start time and turn-on and turn-off delay.

Technical Specifications

Parameters and characteristics for this part

Specification	TPS40425RHAR

Clock Sync	Yes
Control Features	Frequency Control, Power Good, Phase Control
Frequency - Switching (Max)	1.5 MHz
Frequency - Switching (Min)	200 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Phases	2
Output Type	Transistor Driver
Package / Case	40-VFQFN Exposed Pad
Package Length	6 mm
Package Name	40-VQFN
Package Width	6 mm
Serial Interfaces	PMBus
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Supply (Vcc/Vdd) Maximum	20 V
Voltage - Supply (Vcc/Vdd) Minimum	4.5 V

TPS40425 Series

Part	Frequency - Switching (Min)	Frequency - Switching (Max)	Mounting Type	Package / Case	Number of Outputs	Output Phases	Synchronous Rectifier	Package Width	Package Name	Package Length	Topology	Clock Sync	Function	Voltage - Supply (Vcc/Vdd) Maximum	Voltage - Supply (Vcc/Vdd) Minimum	Output Type	Operating Temperature (Max)	Operating Temperature (Min)	Output Configuration	Control Features	Serial Interfaces	Board Type	Total Output Count	Non-Isolated Output Count	Supplied Contents	Utilized IC / Part	Voltage - Output	Voltage - Input (Maximum)	Voltage - Input (Minimum)	Frequency - Switching	Main Purpose	Current - Output (Min)	Current - Output (Max)	Regulator Topology	Contents
Texas Instruments TPS40425RHAT	200 kHz	1.5 MHz	Surface Mount	40-VFQFN Exposed Pad	2	2	Yes	6 mm	40-VQFN	6 mm	Buck	Yes	Step-Down	20 V	4.5 V	Transistor Driver	125 °C	-40 °C	Positive	Frequency Control Phase Control Power Good	PMBus
Texas Instruments TPS40425RHAR	200 kHz	1.5 MHz	Surface Mount	40-VFQFN Exposed Pad	2	2	Yes	6 mm	40-VQFN	6 mm	Buck	Yes	Step-Down	20 V	4.5 V	Transistor Driver	125 °C	-40 °C	Positive	Frequency Control Phase Control Power Good	PMBus
Texas Instruments TPS40425EVM-594																Non-Isolated						Fully Populated	2	2 count	Board(s)	TPS40425	1.2 V 1.8 V	14 V	7 V	500 kHz	DC/DC Step Down	20 A	20 A	Buck	Board

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Using the PWR594 EVM Dual Output DC/DC Analog with PMBus Interface

SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC

Select the correct PMBus POL solution for your application

Multiphase Buck Design from Start to Finish, Part 1 (Rev. B)

TPS40425 Dual Output, 2-Phase, Stackable PMBus™ Synchronous Buck Driverless Controller with Adaptive Voltage Scaling (AVS) Bus datasheet (Rev. C)