CSD87355Q5D Datasheet, PDF (1/23 Pages) Texas Instruments – Synchronous Buck NexFET Power Block

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CSD87355Q5D
SLPS575 – MARCH 2016
CSD87355Q5D Synchronous Buck NexFET™ Power Block
1 Features
•1 Half-Bridge Power Block
• 92.5% System Efficiency at 25 A
• Up to 45-A Operation
• High-Frequency Operation (Up to 1.5 MHz)
• High-Density SON 5-mm × 6-mm Footprint
• Optimized for 5-V Gate Drive
• Low Switching Losses
• Ultralow Inductance Package
• RoHS Compliant
• Halogen Free
• Pb-Free Terminal Plating
2 Applications
• Synchronous Buck Converters
– High-Frequency Applications
– High-Current, Low Duty Cycle Applications
• Multiphase Synchronous Buck Converters
• POL DC-DC Converters
• IMVP, VRM, and VRD Applications
3 Description
The CSD87355Q5D NexFET™ power block is an
optimized design for synchronous buck applications
offering high-current, high-efficiency, and high-
frequency capability in a small 5-mm × 6-mm outline.
Optimized for 5-V gate drive applications, this product
offers a flexible solution capable of offering a high-
density power supply when paired with any 5-V gate
drive from an external controller/driver.
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Top View
V_IN 1
V_IN 2
T_G 3
T_GR 4
P_GND
(Pin 9)
8 VSW
7 VSW
6 VSW
5 BG
P0116-01
Device
CSD87355Q5D
CSD87355Q5DT
.
Ordering Information⁽¹⁾
Media
Qty
Package
13-Inch Reel 2500 _{SON 5 mm × 6 mm}
7-Inch Reel 250 ^{Plastic Package}
Ship
Tape and
Reel
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
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Typical Circuit
VDD
ENABLE
PWM
VDD
GND
BOOT
DRVH
VIN
TG
Control
FET
ENABLE
PWM
LL
DRVL
Driver IC
TGR
VSW
Sync
BG
FET
PGND
CSD87355Q5D
Typical Power Block Efficiency and Power Loss
VIN
96
11
94
10
92
9
90
8
VOUT
88
V_GS = 5 V
7
86
V_IN = 12 V
6
84
V_OUT = 1.3 V
L_OUT = 0.29 PH
5
82
f_SW = 500 kHz
4
T_A = 25qC
80
3
78
2
76
1
74
0
0 5 10 15 20 25 30 35 40 45
Output Current (A)
D000
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.