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TPS5172RHAT

更新时间： 2024-02-29 07:13:18
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德州仪器 - TI /
页数 文件大小 规格书
42页 1819K
描述
DUAL-PHASE, ECO-MODE⑩ STEP-DOWN POWER MANAGEMENT IC FOR 50-A+ APPLICATIONS

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TPS5172RHAT 数据手册

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TPS51727  
www.ti.com .............................................................................................................................................................. SLUS806A–APRIL 2008–REVISED MAY 2008  
DUAL-PHASE, ECO-MODE™ STEP-DOWN POWER MANAGEMENT IC FOR 50-A+  
APPLICATIONS  
1
FEATURES  
DESCRIPTION  
2
•
Seamless Phase Add/Drop Enables Maximum  
Efficiency Under Any Load Condition  
The TPS51727 is a complete, step down controller  
with integrated gate drivers. The PCNT pin enables  
operation in dual or single-phase mode to optimize  
efficiency depending on the load requirements. The  
advanced D-CAP+™ architecture provides fast  
transient response with minimum output capacitance.  
The DAC supports VID-on-the-fly transitions to  
optimize the output voltage to the operating state of  
the system to meet idle power requirements. The  
auto-skip feature of the TPS51727 optimizes  
light-load efficiency in both single and dual phase  
operation. System management features include an  
adjustable thermal sensor, output power monitoring  
and sleep state controls. Adjustable control of VOUT  
slew rate and voltage positioning are provided. In  
addition, the TPS51727 includes two high-current  
MOSFET gate drivers to drive high and low side  
N-channel MOSFETs with exceptionally high speed  
and low switching loss The PCNT and VID0 through  
VID4, pins have flexible LV I/O thresholds that enable  
interface with logic voltages from 1.0 V to 3.6 V. The  
TPS51727 is packaged in a space saving, thermally  
enhanced, RoHS compliant 40-pin QFN and is rated  
to operate from –10°C to 100°C.  
•
•
•
Minimum External Parts Count  
±8 mV VOUT Accuracy Over Line/Load/Temp.  
5-Bit DAC with 0.4-V to 1.25-V Output Range  
Supports Wide Range of Applications  
•
•
Optimized Efficiency at Light & Heavy Loads  
Patent Pending Output Overshoot Reduction  
(OSR™)  
•
•
•
•
Accurate, Adjustable Voltage Positioning  
Selectable 200/300/400/500 kHz Frequency  
Pat. pending AutoBalance™ Phase Balancing  
Supports Resistor or Inductor DCR Current  
Sensing  
•
•
•
•
Accurate, Selectable Current Limit  
4.5-V to 28-V Conversion Voltage Range  
Fast MOSFET Driver w/Integrated Boost Diode  
Integrated OVP Can Be Disabled Thermal  
Sensor and Output Power Monitor  
•
Small 6 × 6, 40-Pin QFN PowerPAD™ Package  
APPLICATIONS  
•
High-Current, Low-Voltage Applications for  
Adapter, Battery, NVDC or 5-V/12-V Rails  
R1  
VREF  
V5  
VBAT  
CSP1  
CSN1  
Time Constant  
and  
Thermal Matching  
V5  
C1  
1 mF  
VREF  
40 39 38 37 36 35 34 33 32 31  
C6  
R5  
C
IN  
L1  
0.36 mH  
V
Q1  
OUT  
1
2
DROOP  
DRVH1 30  
VBST 29  
LL1 28  
C8  
C4  
VREF  
GND  
3
+
Q2  
4
CSP1  
CSN1  
CSN2  
CSP2  
DRVL1 27  
V5IN 26  
CSP1  
CSN1  
CSN2  
CSP2  
V
C
OUT  
OUT  
TPS51727  
RHA  
5
6
PGND 25  
DRVL2 24  
LL2 23  
PGND  
7
R6  
L2  
0.36 mH  
Q4  
GFB  
VFB  
8
GFB  
VFB  
C10  
9
VBST2 22  
DRVH2 21  
R
1 mF  
T2  
R7  
THRM  
10  
CSP2  
Time Constant  
and  
Thermal Matching  
Q3  
C11  
1 mF  
CSN2  
11 12 13 14 15 16 17 18 19 20  
VBAT  
UDG-08003  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
ECO-MODE, OSR, AutoBalance, PowerPAD, D-CAP+, D-CAP+ are trademarks of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2008, Texas Instruments Incorporated  
1234567...42

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