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TPS544B20_15 PDF预览

TPS544B20_15

更新时间: 2024-09-20 01:17:27
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德州仪器 - TI /
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74页 2715K
描述
TPS544x20 4.5-V to 18-V, 20-A, and 30-A SWIFT™ Synchronous Buck Converters with PMBus™

TPS544B20_15 数据手册

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TPS544B20, TPS544C20  
SLUSB69 MAY 2014  
TPS544x20 4.5-V to 18-V, 20-A, and 30-A SWIFT™  
Synchronous Buck Converters with PMBus™  
1 Features  
3 Description  
The TPS544B20 and TPS544C20 devices are  
PMBus compatible, non-isolated DC-DC Integrated  
FET converters, capable of high-frequency operation  
and delivering 20-A , or 30-A current output from a  
5 mm × 7 mm package, enabling high-power density  
and fast transient performance with minimal PCB  
area. The PMBus interface provides for converter  
configuration as well as monitoring of key parameters  
including output voltage, current and an optional  
external temperature. High-frequency, low-loss  
switching, provided by an integrated NexFET power  
stage and optimized drivers, allows for very high-  
density power solutions and reduced inductor and  
filter capacitor sizes. Response to fault conditions can  
be set to either restart or latch off depending on  
system requirements.  
1
PMBus-Enabled Converters: 20 A, 30 A  
4.5-V to 18-V input, 0.6-V to 5.5-V Output  
5 mm × 7 mm LQFN Package with 0.5-mm Pitch  
Single Thermal Pad  
Integrated 4.5-mΩ and 2.0-mΩ Stacked  
NexFET™ Power Stage  
600-mV, 0.5% Reference  
Lossless, Low-Side MOSFET Current Sensing  
Selectable D-CAP™ and D-CAP2™ Mode Control  
Differential Remote Sensing  
Monotonic Start-Up into Pre-Biased Output  
Output Voltage Margin and Trim  
Output Voltage and Output Current Reporting  
External Temperature Monitoring with 2N3904  
Programmable via PMBus  
Device Information(1)  
PART NAME  
TPS544B20  
TPS544C20  
PACKAGE  
BODY SIZE (NOM)  
Overcurrent Protection  
UVLO, Soft-Start  
LQFN (40)  
5.00 mm × 7.00 mm  
(1) For all available packages, see the orderable addendum at  
the end of the datasheet.  
PGOOD, OV, UV, OT Levels  
Fault Responses  
Turn-On and Turn-Off Delays  
Efficiency vs Output Current  
Thermal Shutdown  
100  
95  
Pin Compatible 20-A, 30-A Converters  
90  
2 Applications  
85  
Test and Instrumentation  
80  
Ethernet Switches, Optical Switches, Routers,  
Base Stations  
75  
Output Voltage  
Servers  
0.6 V  
1.0 V  
1.8 V  
3.3 V  
0.8 V  
1.2 V  
2.5 V  
70  
65  
60  
Enterprise Storage SSD  
High-Density Power Solutions  
0
5
10  
15  
20  
25  
30  
Load Current (A)  
C003  
VIN = 12 V  
L = 410 nH  
Snubber = Open  
fSW = 500 kHz  
RDCR = 0.3 mŸ  
RBOOT = 0 Ÿ  
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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