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TPS40428RHAR PDF预览

TPS40428RHAR

更新时间： 2024-11-07 01:07:39
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92页 2087K
描述
TPS40428 Dual Output, 2-Phase, Stackable PMBus™ Synchronous Buck Driverless Controller with Adaptive Voltage Scaling (AVS) Bus

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TPS40428  
SLUSBV0A –MAY 2014–REVISED JULY 2014  
TPS40428 Dual Output, 2-Phase, Stackable PMBus™ Synchronous Buck Driverless  
Controller with Adaptive Voltage Scaling (AVS) Bus  
1 Features  
3 Description  
The TPS40428 device is a PMBus, synchronous  
buck, driverless controller. It operates in smart power  
mode with factory default settings, and it can operate  
in non-smart power mode after PMBus programing  
and power reboot. It can be configured for dual-  
output or 2-phase operation. 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.  
1
•
Smart Power Mode in Factory Default (Compatible  
with TI Smart Power Stage CSD95378B and Pin-  
for-Pin Equivalent to TPS40425 – Non-Smart  
Power Mode in Factory Default)  
•
•
•
•
•
•
Single Supply Operation: 4.5 V to 20 V  
VOUT from 0.6 V  
Dual or Multi-Phase Synchronous Buck Controller  
Individual High-Speed AVS Interface  
Fast Transient Response  
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.  
Stackable up to Four Phases  
–
–
2-, 3-, or 4-Phase Interleaved Phase Shifts  
Accurate Current Sharing  
Using the PMBus standard, the TPS40428 device  
can program reference voltage, fault limit, UVLO  
threshold, soft-start time and turn-on and turn-off  
delay.  
•
PMBus Interface Capability  
–
–
–
–
–
Margining Up/Down with 2-mV Step  
Programmable Fault Limit and Response  
±0.8% VOUT  
In addition, the device implements an accurate  
measurement system to monitor the output voltages,  
currents and temperatures for individual channels.  
Accuracy Current Monitoring  
±3°C External Temperature Monitoring In  
Smart Power Mode  
Device Information(1)  
–
–
Programmable UVLO ON/OFF Thresholds  
PART NUMBER  
PACKAGE  
BODY SIZE (NOM)  
Programmable Soft-Start Time, Turn-On  
Delay, and Turn-Off Delay  
TPS40428  
RHA (40)  
6.00 mm × 6.00 mm  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
•
•
On-Chip Non-Volatile Memory (NVM) to Store  
Custom Configurations  
0.6-V Reference Voltage with 0.5% Accuracy from  
–40°C to 125°C  
Simplified Application (Dual Output)  
VIN  
Smart Power Stage  
TPS40428  
Smart Power Stage  
•
•
•
•
•
•
Programmable ƒSW from 200 kHz to 1.5 MHz  
Supports Pre-biased Output  
GND  
VIN  
SW  
PWM  
TAO  
PWM1  
PWM2  
TSNS2  
CS2P  
PWM  
TAO  
VIN  
SW  
TSNS1  
CS1P  
CS1N  
Differential Remote Sensing  
IOUT  
REFIN  
IOUT  
REFIN  
GND  
CS2N  
GND  
Synchronization to an Extermal Clock  
OC/OV/UV/OT Fault Protection  
GND  
GND  
ISH1  
ISH2  
FLT2  
VOUT1  
VOUT2  
FLT1  
VOUT2  
40-Pin, 6 mm × 6 mm, QFN Package  
DIFFO1  
VSNS1  
GSNS1  
VSNS2  
GSNS2  
Remote SNS to VOUT1  
{
GND  
2 Applications  
FB1  
FB2  
•
•
Wireless Infrastructure  
COMP1  
COMP2  
Switcher/Router Networking/Server/Storage  
PG1  
PG2  
CNTL2  
VDD  
CNTL1  
SYNC  
VIN  
PHSET  
PMBDATA  
PMBCLK  
SMBALERT  
RT  
BP3  
GND  
GND  
AGND  
PMBus Interface  
{
BP5  
PGND  
ADDR0 AVSDATA  
ADDR1 AVSCLK  
High-Speed AVSBUS  
}
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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TPS40428RHAR 替代型号

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