CSD95372BQ5MCT [TI]

CSD95372BQ5MC Synchronous Buck NexFET Smart Power Stage;
CSD95372BQ5MCT
型号: CSD95372BQ5MCT
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

CSD95372BQ5MC Synchronous Buck NexFET Smart Power Stage

开关 光电二极管
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CSD95372BQ5MC  
SLPS417A APRIL 2014REVISED JULY 2015  
CSD95372BQ5MC Synchronous Buck NexFET™ Smart Power Stage  
1 Features  
2 Applications  
1
60-A Continuous Operating Current Capability  
93.4% System Efficiency at 30 A  
Multiphase Synchronous Buck Converters  
High-Frequency Applications  
Low Power Loss of 2.8 W at 30 A  
High-Current, Low Duty-Cycle Applications  
High-Frequency Operation (up to 1.25 MHz)  
Diode Emulation Mode With FCCM  
POL DC-DC Converters  
Memory and Graphic Cards  
Temperature-Compensated Bidirectional Current  
Sense  
Desktop and Server VR11.x / VR12.x V-Core and  
Memory Synchronous Converters  
Analog Temperature Output (600 mV at 0°C)  
Fault Monitoring  
3 Description  
The CSD95372BQ5MC NexFET™ smart power  
stage is a highly optimized design for use in a high-  
power, high-density synchronous buck converter.  
This product integrates the driver IC and Power  
MOSFETs to complete the power stage switching  
function. This combination produces high-current,  
high-efficiency, and high-speed switching capability in  
a small 5 mm × 6 mm outline package. It also  
integrates the accurate current sensing and  
temperature sensing functionality to simplify system  
design and improve accuracy. In addition, the PCB  
footprint is optimized to help reduce design time and  
simplify the completion of the overall system design.  
High-Side Short, Overcurrent, and  
Overtemperature Protection  
3.3-V and 5-V PWM Signal Compatible  
Tri-State PWM Input  
Integrated Bootstrap Diode  
Optimized Deadtime for Shoot-Through Protection  
High-Density SON 5 × 6 mm Footprint  
Ultra-Low Inductance Package  
System-Optimized PCB Footprint  
DualCool™ Packaging  
RoHS Compliant – Lead-Free Terminal Plating  
Halogen-Free  
Device Information(1)  
DEVICE  
CSD95372BQ5MC 13-Inch Reel 2500  
CSD95372BQ5MCT 7-Inch Reel 250  
MEDIA  
QTY  
PACKAGE  
SHIP  
Tape  
and  
Reel  
SON 5 × 6 mm  
DualCool Package  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
Application Diagram  
Typical Power Stage Efficiency and Power Loss  
100  
90  
80  
70  
60  
50  
40  
30  
14  
12  
10  
8
VIN  
CSD95372B  
VOUT  
VCC  
VDD = 5V  
VIN = 12V  
VOUT = 1.2V  
LOUT = .225µH  
fSW = 500kHz  
TA = 25ºC  
6
VCC  
4
PWM1  
+Is1  
2
-Is2  
VOUT  
VOUT  
SS  
0
0
10  
20  
30  
40  
50  
60  
TSEN  
Output Current (A)  
G001  
+Is2  
-Is2  
RT  
PWM2  
PGND  
Multiphase  
Controller  
CSD95372B  
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.  
 
 
CSD95372BQ5MC  
SLPS417A APRIL 2014REVISED JULY 2015  
www.ti.com  
Table of Contents  
1
2
3
4
5
6
Features.................................................................. 1  
Applications ........................................................... 1  
Description ............................................................. 1  
Revision History..................................................... 2  
Pin Configuration and Functions......................... 3  
Specifications......................................................... 4  
6.1 Absolute Maximum Ratings ...................................... 4  
6.2 ESD Ratings.............................................................. 4  
6.3 Recommended Operating Conditions....................... 4  
6.4 Thermal Information.................................................. 4  
7
8
Application Schematic .......................................... 5  
Device and Documentation Support.................... 6  
8.1 Community Resources.............................................. 6  
8.2 Trademarks............................................................... 6  
8.3 Electrostatic Discharge Caution................................ 6  
8.4 Glossary.................................................................... 6  
9
Mechanical, Packaging, and Orderable  
Information ............................................................. 7  
9.1 Mechanical Drawing.................................................. 7  
9.2 Recommended PCB Land Pattern............................ 8  
9.3 Recommended Stencil Opening ............................... 8  
4 Revision History  
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.  
Changes from Original (April 2014) to Revision A  
Page  
Updated Application Schematic to show IOUT (not IMON) for each CSD95372B ..................................................................... 5  
Corrected MAX A dimensions in Mechanical Drawing table to 1.050 mm (0.041 inch)......................................................... 7  
2
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SLPS417A APRIL 2014REVISED JULY 2015  
5 Pin Configuration and Functions  
Top View  
IOUT  
REFIN  
ENABLE  
PGND  
1
2
3
4
5
12 PWM  
11 TAO/FAULT  
10 FCCM  
9
8
BOOT  
13  
VDD  
BOOT_R  
PGND  
VSW  
6
7
VIN  
Pin Functions  
PIN  
NUMBER  
DESCRIPTION  
NAME  
BOOT  
Bootstrap capacitor connection. Connect a minimum of 0.1 µF 16 V X7R ceramic capacitor from BOOT to BOOT_R  
pins. The bootstrap capacitor provides the charge to turn on the control FET. The bootstrap diode is integrated.  
9
8
BOOT_R  
Return path for HS gate driver, connected to VSW internally.  
Enables device operation. If ENABLE = logic HIGH, turns on device. If ENABLE = logic LOW, the device is turned  
off and both MOSFET gates are actively pulled low. An internal 100 kΩ pulldown resistor will pull the ENABLE pin  
LOW if left floating.  
ENABLE  
FCCM  
3
This pin enables the Diode Emulation function. When this pin is held LOW, Diode Emulation Mode is enabled for  
sync FET. When FCCM is HIGH, the device is operated in Forced Continuous Conduction Mode. An internal 5 µA  
current source will pull the FCCM pin to 3.3 V if left floating.  
10  
IOUT  
PGND  
PGND  
1
4
Output of current sensing amplifier. V(IOUT) – V(REFIN) is proportional to the phase current.  
Power ground, connected directly to pin 13.  
13  
Power ground  
Pulse width modulated 3-state input from external controller. Logic LOW sets control FET gate low and sync FET  
gate high. Logic HIGH sets control FET gate high and sync FET gate low. Open or High Z sets both MOSFET  
gates low if greater than the tri-state shutdown hold-off time (t3HT).  
PWM  
12  
2
REFIN  
External reference voltage input for current sensing amplifier  
Temperature Analog Output. Reports a voltage proportional to the die temperature. An ORing diode is integrated in  
the IC. When used in multiphase application, a single wire can be used to connect the TAO pins of all the ICs. Only  
the highest temperature will be reported. TAO will be pulled up to 3.3 V if thermal shutdown occurs. TAO should be  
bypassed to PGND with a 1 nF 16 V X7R ceramic capacitor.  
TAO/  
FAULT  
11  
VDD  
VIN  
5
7
6
Supply voltage to gate driver and internal circuitry  
Input voltage pin. Connect input capacitors close to this pin.  
VSW  
Phase node connecting the HS MOSFET source and LS MOSFET drain – pin connection to the output inductor.  
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6 Specifications  
6.1 Absolute Maximum Ratings  
TA = 25°C (unless otherwise noted)(1)  
MIN  
–0.3  
–0.3  
–7  
MAX  
UNIT  
V
VIN to PGND  
25  
VIN to VSW  
25  
V
VIN to VSW (10 ns)  
VSW to PGND  
27  
V
–0.3  
–7  
20  
V
VSW to PGND (10 ns)  
VDD to PGND  
23  
V
–0.3  
–0.3  
–0.3  
7
VDD + 0.3 V  
VDD + 0.3 V  
12  
V
ENABLE, PWM, FCCM. TAO, IOUT, REFIN to PGND  
V
BOOT to BOOT_R(2)  
Power dissipation  
Operating junction  
Storage temperature  
V
PD  
TJ  
W
°C  
°C  
–55  
–55  
150  
Tstg  
150  
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings  
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended  
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.  
(2) Should not exceed 7 V  
6.2 ESD Ratings  
VALUE  
±2000  
±500  
UNIT  
Human body model (HBM)  
V(ESD) Electrostatic discharge  
V
Charged device model (CDM)  
6.3 Recommended Operating Conditions  
TA = 25° (unless otherwise noted)  
MIN  
MAX  
UNIT  
VDD  
VIN  
Gate drive voltage  
Input supply voltage(1)  
4.5  
5.5  
16  
V
V
VOUT  
Output voltage  
5.5  
V
IOUT  
Continuous output current  
VIN = 12 V, VDD = 5V, VOUT = 3.3 V,  
ƒSW = 500 kHz, LOUT = 0.47 µH(2)  
60  
A
IOUT-PK Peak output current(3)  
90  
A
ƒSW  
Switching frequency  
On time duty cycle  
CBST = 0.1 µF (min)  
ƒSW = 1 MHz  
1250  
85%  
kHz  
Minimum PWM on time  
Operating temperature  
40  
ns  
°C  
–40  
125  
(1) Operating at high VIN can create excessive AC voltage overshoots on the switch node (VSW) during MOSFET switching transients. For  
reliable operation, the switch node (VSW) to ground voltage must remain at or below the Absolute Maximum Ratings.  
(2) Measurement made with six 10-µF (TDK C3216X5R1C106KT or equivalent) ceramic capacitors placed across VIN to PGND pins.  
(3) System conditions as defined in Note 1. Peak Output Current is applied for tp = 50 µs  
6.4 Thermal Information  
TA = 25°C (unless otherwise noted)  
THERMAL METRIC  
MIN  
TYP  
MAX UNIT  
°C/W  
1.5 °C/W  
θJC(top) is determined with the device mounted on a 1 inch² (6.45 cm²), 2-oz (0.071 mm thick) Cu pad on a 1.5 inches x 1.5 inches,  
0.06-inch (1.52 mm) thick FR4 board.  
(1)  
RθJC(top) Junction-to-case (top of package) thermal resistance  
5
RθJB  
Junction-to-board thermal resistance(2)  
(1)  
(2)  
R
R
θJB value based on hottest board temperature within 1 mm of the package.  
4
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SLPS417A APRIL 2014REVISED JULY 2015  
7 Application Schematic  
12V  
BOOT  
BOOT_R  
VIN  
TPS53661  
TAO/FAULT  
PWM1  
PWM  
VCORE_OUT  
VSP  
VSW  
SKIP#-RAMP  
FCCM  
VDD  
CSD95372B  
PGND  
5V  
VSN  
Load  
ENABLE  
PGND IOUT REFIN  
OCP-I  
COMP  
CSP1  
TSEN  
12V  
VREF  
BOOT  
BOOT_R  
VIN  
F-IMAX  
TAO/FAULT  
PWM  
PWM2  
VSW  
FCCM  
VDD  
CSD95372B  
PGND  
5V  
B-TMAX  
ENABLE  
PGND IOUT REFIN  
CSP2  
O-USR  
12V  
BOOT  
BOOT_R  
VIN  
TAO/FAULT  
ADDR  
PWM  
PWM3  
VSW  
FCCM  
VDD  
CSD95372B  
PGND  
5V  
ENABLE  
PGND IOUT REFIN  
SLEW-MODE  
CSP3  
12V  
ISUM  
IMON  
IMON  
BOOT  
BOOT_R  
VIN  
TAO/FAULT  
PWM  
PWM4  
VSW  
FCCM  
VDD  
CSD95372B  
PGND  
5V  
ENABLE  
PGND IOUT REFIN  
SCLK  
ALERT#  
SDIO  
To/From  
CPU  
CSP4  
^
VR_RDY  
12V  
VR_HOT#  
PMB_CLK  
PMB_ALERT#  
PMB_DIO  
ENABLE  
BOOT  
BOOT_R  
VIN  
I2C or  
PMBus  
(Optional)  
TAO/FAULT  
PWM  
PWM5  
VSW  
^
FCCM  
VDD  
CSD95372B  
PGND  
5V  
ENABLE  
ENABLE  
PGND IOUT REFIN  
VR_FAULT#  
VR_FAULT#  
CSP5  
12V  
12V  
5V  
V12  
V5  
BOOT  
BOOT_R  
VIN  
TAO/FAULT  
PWM  
PWM6  
VSW  
FCCM  
VDD  
CSD95372B  
PGND  
5V  
ENABLE  
3.3V  
IOUT REFIN  
V3R3  
PGND  
CSP6  
GND  
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SLPS417A APRIL 2014REVISED JULY 2015  
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8 Device and Documentation Support  
8.1 Community Resources  
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective  
contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of  
Use.  
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration  
among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help  
solve problems with fellow engineers.  
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and  
contact information for technical support.  
8.2 Trademarks  
DualCool, NexFET, E2E are trademarks of Texas Instruments.  
All other trademarks are the property of their respective owners.  
8.3 Electrostatic Discharge Caution  
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with  
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.  
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more  
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.  
8.4 Glossary  
SLYZ022 TI Glossary.  
This glossary lists and explains terms, acronyms, and definitions.  
6
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CSD95372BQ5MC  
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SLPS417A APRIL 2014REVISED JULY 2015  
9 Mechanical, Packaging, and Orderable Information  
The following pages include mechanical, packaging, and orderable information. This information is the most  
current data available for the designated devices. This data is subject to change without notice and revision of  
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.  
9.1 Mechanical Drawing  
Exposed tie clip may vary  
A
c2  
E2  
d2  
E1  
c1  
L1  
d1  
K
b3  
b2  
b1  
E
D2  
b
e
a1  
L
0.300 x 45°  
d
MILLIMETERS  
NOM  
INCHES  
DIM  
MIN  
0.950  
0.000  
0.200  
MAX  
MIN  
NOM  
MAX  
A
a1  
b
1.000  
1.050  
0.050  
0.320  
0.037  
0.000  
0.008  
0.039  
0.000  
0.041  
0.002  
0.013  
0.000  
0.250  
0.010  
b1  
b2  
b3  
c1  
c2  
D2  
d
2.750 TYP  
0.250  
0.108 TYP  
0.010  
0.200  
0.320  
0.008  
0.013  
0.250 TYP  
0.200  
0.010 TYP  
0.008  
0.150  
0.200  
5.300  
0.200  
0.350  
1.900  
5.900  
4.900  
3.200  
0.250  
0.300  
5.500  
0.300  
0.450  
2.100  
6.100  
5.100  
3.400  
0.006  
0.008  
0.209  
0.008  
0.014  
0.075  
0.232  
0.193  
0.126  
0.010  
0.012  
0.217  
0.012  
0.018  
0.083  
0.240  
0.201  
0.134  
0.250  
0.010  
5.400  
0.213  
0.250  
0.010  
d1  
d2  
E
0.400  
0.016  
2.000  
0.079  
6.000  
0.236  
E1  
E2  
e
5.000  
0.197  
3.300  
0.130  
0.500 TYP  
0.350 TYP  
0.500  
0.020 TYP  
0.014 TYP  
0.020  
K
L
0.400  
0.210  
0.00  
0.600  
0.410  
0.016  
0.008  
0.00  
0.024  
0.016  
L1  
θ
0.310  
0.012  
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9.2 Recommended PCB Land Pattern  
0.331(0.013)  
0.370 (0.015)  
1.000 (0.039)  
0.410 (0.016)  
0.550 (0.022)  
0.300 (0.012)  
2.800  
(0.110)  
6.300  
(0.248)  
5.300  
(0.209)  
5.639  
(0.222)  
0.500  
(0.020)  
0.300  
(0.012)  
R0.127 (R0.005)  
3.400  
(0.134)  
5.900  
(0.232)  
1. Dimensions are in mm (inches).  
9.3 Recommended Stencil Opening  
0.350(0.014)  
2.750  
(0.108)  
0.250  
(0.010)  
1. Dimensions are in mm (inches).  
2. Stencil thickness is 100 µm.  
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PACKAGE OPTION ADDENDUM  
www.ti.com  
5-Aug-2015  
PACKAGING INFORMATION  
Orderable Device  
CSD95372BQ5MC  
CSD95372BQ5MCT  
Status Package Type Package Pins Package  
Eco Plan  
Lead/Ball Finish  
MSL Peak Temp  
Op Temp (°C)  
0 to 0  
Device Marking  
Samples  
Drawing  
Qty  
(1)  
(2)  
(6)  
(3)  
(4/5)  
ACTIVE  
VSON-CLIP  
VSON-CLIP  
DMC  
12  
12  
2500 Pb-Free (RoHS  
Exempt)  
CU SN  
Level-2-260C-1 YEAR  
95372BMC  
95372BMC  
ACTIVE  
DMC  
250  
Pb-Free (RoHS  
Exempt)  
CU SN  
Level-2-260C-1 YEAR  
0 to 0  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability  
information and additional product content details.  
TBD: The Pb-Free/Green conversion plan has not been defined.  
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that  
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.  
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between  
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.  
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight  
in homogeneous material)  
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.  
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.  
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation  
of the previous line and the two combined represent the entire Device Marking for that device.  
(6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish  
value exceeds the maximum column width.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information  
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and  
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.  
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
5-Aug-2015  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.  
Addendum-Page 2  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
8-Oct-2015  
TAPE AND REEL INFORMATION  
*All dimensions are nominal  
Device  
Package Package Pins  
Type Drawing  
SPQ  
Reel  
Reel  
A0  
B0  
K0  
P1  
W
Pin1  
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant  
(mm) W1 (mm)  
CSD95372BQ5MC  
VSON-  
CLIP  
DMC  
12  
2500  
330.0  
15.4  
5.3  
6.3  
1.2  
8.0  
12.0  
Q1  
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
8-Oct-2015  
*All dimensions are nominal  
Device  
Package Type Package Drawing Pins  
VSON-CLIP DMC 12  
SPQ  
Length (mm) Width (mm) Height (mm)  
336.6 336.6 41.3  
CSD95372BQ5MC  
2500  
Pack Materials-Page 2  
IMPORTANT NOTICE  
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other  
changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest  
issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and  
complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale  
supplied at the time of order acknowledgment.  
TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms  
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