CSD95495QVM Datasheet, PDF (1/14 Pages) Texas Instruments – Synchronous Buck NexFET Smart Power Stage

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CSD95495QVM
SLPS671 – JUNE 2017
CSD95495QVM Synchronous Buck NexFET™ Smart Power Stage
1 Features
•1 50-A Continuous Operating Current Capability
• Over 93.5% System Efficiency at 25 A
• High-Frequency Operation (up to 1.25 MHz)
• Diode Emulation Function
• Temperature Compensated Bi-Directional Current
Sense
• Analog Temperature Output
• Fault Monitoring
• 3.3-V and 5-V PWM Signal Compatible
• Tri-State PWM Input
• Integrated Bootstrap Switch
• Optimized Dead Time for Shoot-Through
Protection
• High-Density QFN 4-mm × 5-mm Footprint
• Ultra-Low-Inductance Package
• System Optimized PCB Footprint
• RoHS Compliant – Lead-Free Terminal Plating
• Halogen Free
2 Applications
• Multiphase Synchronous Buck Converters
– High-Frequency Applications
– High-Current, Low-Duty Cycle Applications
• POL DC-DC Converters
• Memory and Graphic Cards
• Desktop and Server VR12.x / VR13.x VRM
Synchronous Buck Converters
3 Description
The CSD95495QVM NexFET™ 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 4-mm
× 5-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 has been
optimized to help reduce design time and simplify the
completion of the overall system design.
Application Diagram
AVSP
TPS53679
AVSN
PWM1
ASKIP#
VREF
ADDR
3.3V
V3P3
P12V
VIN_CSNIN
VCCIO
CSPIN
BEN_VCCIO
SCLK
SDIO
SALERT#
PIN_ALT#
VR_HOT#
SMB_CLK
SMB_ALERT#
SMB_DIO
AVR_RDY
BVR_RDY
AVR_EN
VR_FAULT#
RESET#
AGND
ACSP1
TSEN
APWM6
ACSP6
VREF
BVSN
BVSP
BPWM1
BSKIP#
BCSP1
P12V
VIN
BOOT BOOT_R
PWM CSD95495QVM VOS
P5V ^EN/FCCM
VSW
VDD
TAO
LSET PGND IOUT REFIN
P12V
VIN
BOOT BOOT_R
PWM CSD95495QVM VOS
P5V ^EN/FCCM
VSW
VDD
TAO
LSET PGND IOUT REFIN
P12V
VIN
BOOT BOOT_R
PWM CSD95492QVM VOS
P5V ^EN/FCCM
VSW
VDD
TAO
LSET PGND IOUT REFIN
Device Information⁽¹⁾
DEVICE
MEDIA
QTY
PACKAGE
SHIP
CSD95495QVM 13-Inch Reel
CSD95495QVMT 7-Inch Reel
2500
250
QFN
Tape
4.00-mm × 5.00-mm and
Package
Reel
LOAD
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Power Stage Efficiency and Power Loss
100
15
95
13.5
90
12
85
10.5
80 _{VDD = 5 V}
9
75 ^{VIN = 12 V}
7.5
V_OUT = 1.8 V
70 LOUT = 150 nH
6
65
f_SW = 500 kHz
T_A = 25qC
4.5
60
3
LOAD
55
1.5
50
0
0 5 10 15 20 25 30 35 40 45 50
Output Current (A)
D000
Copyright © 2016, Texas Instruments Incorporated
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.