CSD97394Q4M Stage Datasheet

CSD97394Q4M Datasheet PDF, Equivalent


Part Number

CSD97394Q4M

Description

Synchronous Buck NexFET Power Stage

Manufacture

etcTI

Total Page 22 Pages
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CSD97394Q4M
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CSD97394Q4M
SLPS542 – JANUARY 2015
CSD97394Q4M Synchronous Buck NexFET™ Power Stage
1 Features
1 90% System Efficiency at 15 A
• Max Rated Continuous Current 20 A, Peak 45 A
• High Frequency Operation (up to 2 MHz)
• High Density – SON 3.5 × 4.5 mm Footprint
• Ultra-Low Inductance Package
• System Optimized PCB Footprint
• Ultra-Low Quiescent (ULQ) Current Mode
• 3.3 V and 5 V PWM Signal Compatible
• Diode Emulation Mode with FCCM
• Input Voltages up to 24 V
• Tri-State PWM Input
• Integrated Bootsrap Diode
• Shoot Through Protection
• RoHS Compliant – Lead Free Terminal Plating
• Halogen Free
2 Applications
• Ultrabook/Notebook DC/DC Converters
• Multiphase Vcore and DDR Solutions
• Point-of-Load Synchronous Buck in Networking,
Telecom, and Computing Systems
3 Description
The CSD97394Q4M 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 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. In addition, the driver IC supports
ULQ mode that enables connected standby for
Windows® 8. With the PWM input in tri-state,
quiescent current is reduced to 130 µA, with
immediate response. When SKIP# is held at tri-state,
the current is reduced to 8 µA (typically 20 µs is
required to resume switching). This combination
produces a high current, high efficiency, and high
speed switching device in a small 3.5 × 4.5 mm
outline package. In addition, the PCB footprint is
optimized to help reduce design time and simplify the
completion of the overall system design.
Application Diagram
Device Information(1)
ORDER NUMBER
PACKAGE
MEDIA AND QTY
CSD97394Q4M
CSD97394Q4MT
SON 3.5 × 4.5 mm
Plastic Package
13-inch reel 2500
7-inch reel 250
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
spacer
Typical Power Stage Efficiency and Power Loss
VIN 100
12
CSD97394
VCC
VOUT
VCC
PWM1
+Is1
VOUT
-Is2
+NTC
SS -NTC
RT +Is2
-Is2
PWM2
PGND
Multi-Phase
Controller
CSD97394
VOUT
90
80
70
60
VDD = 5 V
VIN = 12 V
VOUT = 1.8 V
LOUT = 0.29 2H
fSW = 500 kHz
TA = 25GC
10
8
6
4
50 2
40 0
0 4 8 12 16 20
Output Current (A)
D001
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.

CSD97394Q4M
CSD97394Q4M
SLPS542 – JANUARY 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
7 Detailed Description .............................................. 6
7.1 Overview ................................................................... 6
7.2 Functional Block Diagram ......................................... 6
7.3 Feature Description................................................... 6
7.4 Device Functional Modes.......................................... 8
8 Application and Implementation .......................... 9
8.1 Application Information.............................................. 9
8.2 Typical Application ................................................... 9
8.1 System Example ..................................................... 12
9 Layout ................................................................... 14
9.1 Layout Guidelines ................................................... 14
9.2 Layout Example ...................................................... 14
9.3 Thermal Considerations .......................................... 14
10 Device and Documentation Support ................. 15
10.1 Trademarks ........................................................... 15
10.2 Electrostatic Discharge Caution ............................ 15
10.3 Glossary ................................................................ 15
11 Mechanical, Packaging, and Orderable
Information ........................................................... 16
11.1 Mechanical Drawing.............................................. 16
11.2 Recommended PCB Land Pattern........................ 17
11.3 Recommended Stencil Opening ........................... 17
4 Revision History
DATE
January 2015
REVISION
*
NOTES
Initial release.
2 Submit Documentation Feedback
Copyright © 2015, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community CSD97394Q4M SLPS542 – JANU ARY 2015 CSD97394Q4M Synchronous Buck N exFET™ Power Stage 1 Features •1 9 0% System Efficiency at 15 A • Max Ra ted Continuous Current 20 A, Peak 45 A • High Frequency Operation (up to 2 M Hz) • High Density – SON 3.5 × 4.5 mm Footprint • Ultra-Low Inductance Package • System Optimized PCB Footpr int • Ultra-Low Quiescent (ULQ) Curre nt Mode • 3.3 V and 5 V PWM Signal Co mpatible • Diode Emulation Mode with FCCM • Input Voltages up to 24 V • Tri-State PWM Input • Integrated Boot srap Diode • Shoot Through Protection • RoHS Compliant – Lead Free Termi nal Plating • Halogen Free 2 Applica tions • Ultrabook/Notebook DC/DC Conv erters • Multiphase Vcore and DDR Sol utions • Point-of-Load Synchronous Bu ck in Networking, Telecom, and Computin g Systems 3 Description The CSD97394Q4M NexFET™ Power Stage is a highly-optimized design for use in a high-power, highdensity synchronous buck conv.
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