intersil ISL6614B DATA SHEET
®
www.BDTIC.com/Intersil
ISL6614B
Data Sheet May 5, 2008
Dual Advanced Synchronous Rectified
Buck MOSFET Drivers with Pre-POR OVP
The ISL6614B integrates two ISL6613B MOSFET drivers
and is specifically designed to drive two Channel MOSFETs
in a synchronous rectified buck converter topology. This
driver combined with HIP63xx or ISL65xx Multi-Phase Buck
PWM controllers and N-Channel MOSFETs forms complete
core-voltage regulator solutions for advanced
microprocessors.
The ISL6614B features 7V rising threshold and drives both
the upper and lower gates simultaneously over a range from
5V to 12V. This drive-voltage provides the flexibility
necessary to optimize applications involving trade-offs
between gate charge and conduction losses. This driver is
optimized for POL DC/DC Converters for IBA Systems.
An advanced adaptive zero shoot-through protection is
integrated to prevent both the upper and lower MOSFETs
from conducting simultaneously and to minimize the dead
time. These products add an overvoltage protection feature
operational before VCC exceeds its turn-on threshold, at
which the PHASE node is connected to the gate of the low
side MOSFET (LGATE). The output voltage of the converter
is then limited by the threshold of the low side MOSFET,
which provides some protection to the microprocessor if the
upper MOSFET(s) is shorted during start-up.
The ISL6614B also features a three-state PWM input which,
working together with Intersil’s multi-phase PWM controllers,
prevents a negative transient on the output voltage when the
output is shut down. This feature eliminates the Schottky
diode that is used in some systems for protecting the load
from reversed output voltage events.
FN9206.3
Features
• Pin-to-pin Compatible with HIP6602 SOIC Family
• Quad N-Channel MOSFET Drives for Two Synchronous
Rectified Bridges
• Low VCC Rising Threshold (7V) for IBA Applications
• Advanced Adaptive Zero Shoot-Through Protection
- Body Diode Detection
- Auto-zero of r
• Adjustable Gate Voltage (5V to 12V) for Optimal Efficiency
• Internal Bootstrap Schottky Diode
• Bootstrap Capacitor Overcharging Prevention
• Supports High Switching Frequency (up to 1MHz)
- 3A Sinking Current Capability
- Fast Rise/Fall Times and Low Propagation Delays
• Three-State PWM Input for Output Stage Shutdown
• Three-State PWM Input Hysteresis for Applications With
Power Sequencing Requirement
• Pre-POR Overvoltage Protection
• VCC Undervoltage Protection
• Expandable Bottom Copper Pad for Enhanced Heat
Sinking
• QFN Package:
- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat
No Leads - Package Outline
- Near Chip Scale Package Footprint, which Improves
PCB Efficiency and has a Thinner Profile
• Pb-free Available (RoHS compliant)
Conduction Offset Effect
DS(ON)
Applications
• Optimized for POL DC/DC Converters for IBA Systems
• Core Regulators for Intel
• High Current DC/DC Converters
• High Frequency and High Efficiency VRM and VRD
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
• Technical Brief 400 and 417 for Power Train Design,
Layout Guidelines, and Feedback Compensation Design
1
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.
All other trademarks mentioned are the property of their respective owners.
®
and AMD® Microprocessors
Copyright Intersil Americas Inc. 2006, 2007. All Rights Reserved
Pinouts
www.BDTIC.com/Intersil
ISL6614BCB, ISL6614BCBZ, ISL6614BIB, ISL6614BIBZ
(14 LD SOIC)
TOP VIEW
ISL6614B
ISL6614BCR, ISL6614BCRZ, ISL6614BIR, ISL6614RBIRZ
(16 LD QFN)
TOP VIEW
PWM1
PWM2
GND
LGATE1
PVCC
PGND
LGATE2
1
1
2
2
3
4
5
6
14
13
12
11
10
9
87
VCC
PHASE1
UGATE1
BOOT1
BOOT2
UGATE2
PHASE2
GND
LGATE1
PVCC
PGND
PWM2
PWM1
15
16 14 13
1
2
3
4
GND
6578
NC
LGATE2
VCC
PHASE2
PHASE1
12
11
10
9
NC
UGATE1
BOOT1
BOOT2
UGATE2
Ordering Information
PART NUMBER PART MARKING TEMP. RANGE (°C) PACKAGE PKG. DWG. #
ISL6614BCB* 6614BCB 0 to +85 14 Ld SOIC M14.15
ISL6614BCBZ* (Note) 6614BCBZ 0 to +85 14 Ld SOIC (Pb-free) M14.15
ISL6614BCR* 66 14BCR 0 to +85 16 Ld 4x4 QFN L16.4x4
ISL6614BCRZ* (Note) 66 14BCRZ 0 to +85 16 Ld 4x4 QFN (Pb-free) L16.4x4
ISL6614BIB* 6614BIB -40 to +85 14 Ld SOIC M14.15
ISL6614BIBZ* (Note) 6614BIBZ -40 to +85 14 Ld SOIC (Pb-free) M14.15
ISL6614BIR* 66 14BIR -40 to +85 16 Ld 4x4 QFN L16.4x4
ISL6614BIRZ* (Note) 66 14BIRZ -40 to +85 16 Ld 4x4 QFN (Pb-free) L16.4x4
*Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and 100%
matte tin plate PLUS ANNEAL - e3 termination finish, which is 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.
2
FN9206.3
May 5, 2008
Block Diagram
www.BDTIC.com/Intersil
ISL6614B
VCC
PWM1
PWM2
GND
+5V
+5V
10k
8k
10k
8k
PVCC
PRE-POR OVP
FEATURES
CONTROL
LOGIC
SHOOT-
THROUGH
PROTECTION
PGND
PVCC
SHOOT-
THROUGH
PROTECTION
PGND
PVCC
BOOT1
UGATE1
PHASE1
LGATE1
PGND
BOOT2
UGATE2
PHASE2
PVCC
LGATE2
CHANNEL 1
CHANNEL 2
PAD
FOR ISL6614BCR, THE PAD ON THE BOTTOM SIDE OF
THE QFN PACKAGE MUST BE SOLDERED TO THE CIRCUIT’S GROUND.
3
FN9206.3
May 5, 2008
ISL6614B
www.BDTIC.com/Intersil
Typical Application - 4 Channel Converter Using ISL65xx and ISL6614B Gate Drivers
7V TO 12V
BOOT1
+12V
PGOOD
EN
VID
FB
VSEN
FS/DIS
COMP
MAIN
CONTROL
ISL65xx
GND
VCC
ISEN1
PWM1
PWM2
ISEN2
ISEN3
PWM3
PWM4
ISEN4
+5V
VCC
PWM1
PWM2
7V TO 12V
VCC
DUAL
DRIVER
ISL6614B
UGATE1
PHASE1
LGATE1
PVCC
BOOT2
UGATE2
PHASE2
LGATE2
PGNDGND
BOOT1
UGATE1
PHASE1
5V TO 12V
+12V
+12V
+V
CORE
LGATE1
DUAL
DRIVER
ISL6614B
PWM1
PWM2
PVCC
5V TO 12V
BOOT2
UGATE2
PHASE2
LGATE2
PGNDGND
4
+12V
FN9206.3
May 5, 2008
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