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TPS40425 Fiches technique(PDF) 1 Page - Texas Instruments

No de pièce TPS40425
Description  TPS40425 Dual Output, 2-Phase, Stackable PMBus??Synchronous Buck Driverless Controller with Adaptive Voltage Scaling (AVS) Bus
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS40425 Fiches technique(HTML) 1 Page - Texas Instruments

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background image
BP3
PWM1
TPS40425
ISH1
CS1P
VDD
PWM2
ISH2
CS2P
CS1N
FB1
COMP1
PMBDATA
PMBCLK
SMBALERT
ADDR0
ADDR1
VIN
Power Stage
BOOT
SW
GND
PWM
GND
VSNS1
GSNS1
DIFFO1
{
Remote SNS to VOUT1
PG1
CNTL1
SYNC
PHSET
{
PMBus Interface
VIN
Power Stage
BOOT
SW
GND
PWM
VSNS2
GSNS2
PG2
CNTL2
RT
FB2
COMP2
GND
GND
AGND
TSNS1
TSNS2
AVSDATA1
AVSCLK1
CS2N
GND
VIN
4.5 V to 17 V
VOUT2
VOUT1
Temperature Sense
}
High-Speed AVSBUS
}
VOUT2
Product
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TPS40425
SLUSBO6A – JANUARY 2014 – REVISED JULY 2014
TPS40425 Dual Output, 2-Phase, Stackable PMBus™ Synchronous Buck Driverless
Controller with Adaptive Voltage Scaling (AVS) Bus
1 Features
3 Description
The TPS40425 is a PMBus, synchronous buck,
1
Non-Smart Power Mode in Factory Default
driverless controller. It operates in non-smart power
Pin-for-Pin Equivalent to TPS40428 – Smart
mode in factory default setting, and it can operate in
Power Mode in Factory Default
smart power mode after PMBus programming and
Single Supply Operation: 4.5 V to 20 V
power reboot. It can be configured as dual-output or
2-phase. It is also stackable up to 4 phases to
VOUT from 0.6 V
support load current as high as 120 A. Interleaved
Dual or Multi-Phase Synchronous Buck Controller
phase shift for 2-, 3-, or 4-phases reduce the input
Individual High-Speed AVS Interface
and output ripples therefore reducing input and output
(0.5-V to 1.5-V Range)
capacitance.
Fast Transient Response
The wide input voltage range can support 5-V and
Stackable up to Four Phases
12-V intermediate supply buses. The 0.5% reference
voltage satisfies the need of precision voltage to the
2-, 3-, or 4-Phase Interleaved Phase Shifts
modern ASICs.
Accurate Current Sharing
Using the PMBus standard, the TPS40425 device
PMBus Capability
can program reference voltage, fault limit, UVLO
Margining Up or Down with 2-mV Step
threshold, soft-start time and turn-on and turn-off
Programmable Fault Limit and Response
delay.
±0.8% VOUT
In addition, the device implements an accurate
measurement system to monitor the output voltages,
Accuracy Current Monitoring
currents and temperatures for individual channels.
±4.5°C External Temperature Monitoring with
x3904
Device Information
Programmable UVLO ON/OFF Thresholds
PART NUMBER
PACKAGE
BODY SIZE (NOM)
Programmable Soft-Start Time, Turn-On
TPS40425
VQFN (40)
6.00 mm × 6.00 mm
Delay, and Turn-Off Delay
On-Chip Non-Volatile Memory (NVM) to Store
Simplified Application Diagram
Custom Configurations
(Dual Output)
0.6-V Reference Voltage with 0.5% Accuracy from
–40°C to 125°C
Inductor DCR Current Sensing
Programmable ƒSW from 200 kHz to 1.5 MHz
Supports Pre-biased Output
Differential Remote Sensing
Synchronization to an Extermal Clock
OC/OV/UV/OT Fault Protection
40-Pin, 6 mm × 6 mm, QFN Package
Support for TI Power Stage
Compatible with High-Frequency, Synchronous
MOSFET Driver TPS28226
2 Applications
Wireless Infrastructure
Switcher/Router Networking/Server/Storage
1
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. PRODUCTION DATA.


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