廬
ISL6596
Data Sheet
November 2, 2005
FN9240.0
Synchronous Rectified MOSFET Driver
The ISL6596 is a high frequency, MOSFET driver optimized
to drive two N-Channel power MOSFETs in a synchronous
buck converter topology. This driver combined with Intersil鈥檚
Multi-Phase Buck PWM controllers forms a complete single-
stage core-voltage regulator solution with high efficiency
performance at high switching frequency for advanced
microprocessors.
The IC is biased by a single low voltage supply (5V),
minimizing driver switching losses in high MOSFET gate
capacitance and high switching frequency applications.
Each driver is capable of driving a 3nF load with less than
10ns rise/fall time. Bootstrapping of the upper gate driver is
implemented via an internal low forward drop diode,
reducing implementation cost, complexity, and allowing the
use of higher performance, cost effective N-Channel
MOSFETs. Adaptive shoot-through protection is integrated
to prevent both MOSFETs from conducting simultaneously.
The ISL6596 features 4A typical sink current for the lower
gate driver, enhancing the lower MOSFET gate hold-down
capability during PHASE node rising edge, preventing power
loss caused by the self turn-on of the lower MOSFET due to
the high dV/dt of the switching node.
The ISL6596 also features an input that recognizes a high-
impedance state, working together with Intersil multi-phase
3.3V or 5V PWM controllers to prevent negative transients
on the controlled output voltage when operation is
suspended. This feature eliminates the need for the schottky
diode that may be utilized in a power system to protect the
load from negative output voltage damage.
Features
鈥?Drives Two N-Channel MOSFETs
鈥?Adaptive Shoot-Through Protection
鈥?0.4鈩?On-Resistance and 4A Sink Current Capability
鈥?Supports High Switching Frequency
- Fast Output Rise and Fall Time
- Low Tri-State Hold-Off Time (20ns)
鈥?Support 3.3V and 5V PWM Input
鈥?Low
Quiescent
Supply Current
鈥?Power-On Reset
鈥?Expandable Bottom Copper Pad for Heat Spreading
鈥?Dual Flat No-Lead (DFN) Package
- Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat
No Leads-Product Outline
- Near Chip-Scale Package Footprint; Improves PCB
Efficiency and Thinner in Profile
鈥?Pb-Free Plus Anneal Available (RoHS Compliant)
Ordering Information
PART
NUMBER
ISL6596CBZ
(Note)
PART
MARKING
6596CBZ
TEMP
RANGE
(擄C)
0 to 70
PACKAGE
8 Ld SOIC
PKG.
DWG. #
M8.15
ISL6596CBZ-T 6596CBZ
(Note)
ISL6596CRZ
(Note)
596Z
8 Ld SOIC Tape and Reel
0 to 70
10 Ld 3x3 DFN
L10.3x3
Applications
鈥?Core Voltage Supplies for Intel廬 and AMD廬
Microprocessors
鈥?High Frequency Low Profile High Efficiency DC/DC
Converters
鈥?High Current Low Voltage DC/DC Converters
鈥?Synchronous Rectification for Isolated Power Supplies
ISL6596CRZ-T 596Z
(Note)
ISL6596IBZ
(Note)
ISL6596IBZ-T
(Note)
ISL6596IRZ
(Note)
ISL6596IRZ-T
(Note)
96IZ
96IZ
10 Ld DFN Tape and Reel
-40 to 85
8 Ld SOIC
8 Ld SOIC Tape and Reel
-40 to 85
10 Ld 3x3 DFN
L10.3x3
10 Ld DFN Tape and Reel
M8.15
Related Literature
鈥?Technical Brief TB389 鈥淧CB Land Pattern Design and
Surface Mount Guidelines for QFN (MLFP) Packages鈥?/div>
鈥?Technical Brief TB363 鈥淕uidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)鈥?/div>
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2005. All Rights Reserved
Intel廬 is a registered trademark of Intel Corporation.
AMD廬 is a registered trademark of Advanced Micro Devices, Inc.
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