CSD95373AQ5M_15 Datasheet, PDF (1/26 Pages) Texas Instruments – CSD95373AQ5M Synchronous Buck NexFET™ Power Stage

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CSD95373AQ5M
SLPS458A – DECEMBER 2013 – REVISED AUGUST 2014
CSD95373AQ5M Synchronous Buck NexFET™ Power Stage
1 Features
•1 45 A Continuous Operating Current Capability
• 92.6% System Efficiency at 25 A
• Ultra-Low Power Loss of 2.6 W at 25 A
• High Frequency Operation (up to 2 MHz)
• High Density – SON 5 × 6-mm Footprint
• Ultra-Low Inductance Package
• System Optimized PCB Footprint
• 3.3 V and 5 V PWM Signal Compatible
• Diode Emulation Mode with FCCM
• Analog Temperature Output
• Tri-State PWM Input
• Integrated Bootstrap Switch
• Optimized Dead Time for Shoot Through
Protection
• RoHS Compliant – Lead-Free Terminal Plating
• Halogen Free
2 Applications
• Multiphase Synchronous Buck Converter
– High Frequency Applications
– High-Current, Low Duty Cycle Applications
• Point of Load Dc-Dc Converters
• Memory and Graphic Cards
• Desktop and Server VR11.× and VR12.× for
VCore Synchronous Buck Converters
3 Description
The CSD95373AQ5M NexFET™ Power Stage is a
highly-optimized design for use in a high-power, high-
density Synchronous Buck converters. This product
integrates the driver IC and NexFET technology to
complete the power stage switching function. The
driver IC has a built-in selectable diode emulation
function that enables DCM operation to improve light
load efficiency. This combination produces high
current, high efficiency, and high speed switching
capability in a small 5 × 6 mm outline package. It also
integrates the temperature sensing functionality to
simplify system design and improve accuracy. In
addition, the PCB footprint has been optimized to
help reduce design time and simplify the completion
of the overall system design.
Device
CSD95373AQ5M
CSD95373AQ5MT
Device Information⁽¹⁾
Media
Qty
Package
13-Inch Reel
7-Inch Reel
2500
250
SON
5-mm × 6-mm
Package
Ship
Tape
and
Reel
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
SPACER
Application Diagram
CSD95373A
V_CC
V_OUT
VCC
PWM1
+Is1
VOUT
-Is2
+NTC
SS
-NTC
RT
+Is2
-Is2
PWM2
PGND
V_IN
V_OUT
Typical Power Stage Efficiency and Power Loss
100
10
90
9
80
8
70
7
60
V_DD = 5V
6
50
V_IN = 12V
5
V_OUT = 1.2V
40
L_OUT = .22µH
4
30
f_SW = 500kHz
3
T_A = 25ºC
20
2
10
1
0
0
0 5 10 15 20 25 30 35 40 45
Output Current (A)
G001
TPS53640
Controller
1
CSD95373A
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.