CSD95373BQ5M_15 Datasheet, PDF (1/13 Pages) Texas Instruments – CSD95373BQ5M Synchronous Buck NexFET™ Smart Power Stage

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CSD95373BQ5M
SLPS462 – JUNE 2014
CSD95373BQ5M Synchronous Buck NexFET™ Smart Power Stage
1 Features
•1 45 A Continuous Operating Current Capability
• 92.7% System Efficiency at 25 A
• Low Power Loss of 2.6 W at 25 A
• High Frequency Operation (up to 1.25 MHz)
• Diode Emulation Mode with FCCM
• Temperature Compensated Bi-Directional Current
Sense
• Analog Temperature Output (600 mV at 0°C)
• Fault Monitoring
– Highside 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
• RoHS Compliant – Lead-Free Terminal Plating
• Halogen Free
2 Applications
• Multiphase Synchronous Buck Converters
– High Frequency Applications
– High Current, Optimized for Applications With
a Wide Duty Cycle Range
• POL DC-DC Converters
• Memory and Graphic Cards
• Desktop and Server VR11.x / VR12.x V-core and
Memory Synchronous Converters
3 Description
The CSD95373BQ5M 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 has been optimized to help reduce design
time and simplify the completion of the overall system
design.
SPACER
Application Diagram
CSD95373B
V_CC
V_OUT
VOUT
VCC
PWM1
+Is1
-Is2
SS
TSEN
RT
+Is2
-Is2
PWM2
PGND
Multiphase
Controller
CSD95373B
Device
CSD95373BQ5M
CSD95373BQ5MT
Device Information⁽¹⁾
Media
Qty
Package
13-Inch Reel 2500 _{SON 5-mm ×}
7-Inch Reel 250 ^{6-mm Package}
Ship
Tape and
Reel
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
V_IN
V_OUT
Typical Power Stage Efficiency and Power Loss
100
14
90
12
80
10
70
V_DD = 5V
8
V_IN = 12V
60
V_OUT = 1.2V
6
L_OUT = .225µH
50
f_SW = 500kHz
4
T_A = 25ºC
40
2
30
0
0
5 10 15 20 25 30 35 40 45
Output Current (A)
G001
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.