ISL6207 Intersil Corporation, ISL6207 Datasheet

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ISL6207

Manufacturer Part Number
ISL6207
Description
Manufacturer
Intersil Corporation
Datasheet

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High Voltage Synchronous Rectified Buck
MOSFET Driver
The ISL6207 is a high frequency, dual MOSFET driver,
optimized to drive two N-Channel power MOSFETs in a
synchronous-rectified buck converter topology in mobile
computing applications. This driver, combined with an Intersil
Multi-Phase Buck PWM controller, such as ISL6223, ISL6215,
and ISL6216, forms a complete single-stage core-voltage
regulator solution for advanced mobile microprocessors.
The ISL6207 features 4A typical sink current for the lower gate
driver. The 4A typical sink current is capable of holding the
lower MOSFET gate during the Phase node rising edge to
prevent the shoot-through power loss caused by the high dv/dt
of the Phase node. The operation voltage matches the 30V
breakdown voltage of the MOSFETs commonly used in mobile
computer power supplies.
The ISL6207 also features a three-state PWM input that,
working together with most of Intersil multiphase PWM
controllers, will prevent a negative transient on the output
voltage when the output is being shut down. This feature
eliminates the Schottky diode, that is usually seen in a
microprocessor power system for protecting the
microprocessor, from reversed-output-voltage damage.
The ISL6207 has the capacity to efficiently switch power
MOSFETs at frequencies up to 2MHz. Each driver is capable
of driving a 3000pF load with a 15ns propagation delay and
less than a 10ns transition time. This product implements
bootstrapping on the upper gate with an internal bootstrap
Schottky 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.
®
1
Copyright © Intersil Americas Inc. 2003-2005. All Rights Reserved. All other trademarks mentioned are the property of their respective owners.
Data Sheet
Intel® is a registered trademark of Intel Corporation. AMD® is a registered trademark of Advanced Micro Devices, Inc.
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Pinouts
UGATE
Features
• Drives Two N-Channel MOSFETs
• Adaptive Shoot-Through Protection
• 30V Operation Voltage
• 0.4Ω On-Resistance and 4A Sink Current Capability
• Supports High Switching Frequency
• Three-State PWM Input for Power Stage Shutdown
• Internal Bootstrap Schottky Diode
• QFN Package:
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Core Voltage Supplies for Intel and AMD
• High Frequency Low Profile DC/DC Converters
• High Current Low Output Voltage DC/DC Converters
• High Input Voltage DC/DC Converters
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
• Technical Brief TB389 “PCB Land Pattern Design and
BOOT
PWM
GND
- Fast Output Rise Time
- Short Propagation Delays
- Compliant to JEDEC PUB95 MO-220
- Near Chip Scale Package footprint, which improves
Microprocessors
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
Surface Mount Guidelines for QFN Packages”
December 2, 2005
QFN - Quad Flat No Leads - Package Outline
PCB efficiency and has a thinner profile
1
2
3
4
ISL6207 (SOIC-8)
TOP VIEW
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
8
7
6
5
PHASE
EN
VCC
LGATE
BOOT
PWM
1
2
ISL6207 (QFN)
TOP VIEW
®
ISL6207
3
Mobile
8
FN9075.8
7
4
6
5
6 EN
VCC

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ISL6207 Summary of contents

Page 1

... Multi-Phase Buck PWM controller, such as ISL6223, ISL6215, and ISL6216, forms a complete single-stage core-voltage regulator solution for advanced mobile microprocessors. The ISL6207 features 4A typical sink current for the lower gate driver. The 4A typical sink current is capable of holding the lower MOSFET gate during the Phase node rising edge to prevent the shoot-through power loss caused by the high dv/dt of the Phase node ...

Page 2

... 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. ISL6207 Block Diagram VCC EN VCC PWM ...

Page 3

... Typical Application - Two Phase Converter Using ISL6207 Gate Drivers +5V +5V FB COMP VCC VSEN PWM1 PWM2 PGOOD MAIN CONTROL ISEN1 VID ISEN2 FS DACOUT GND 3 ISL6207 V BAT +5V VCC BOOT UGATE EN PWM PHASE DRIVE ISL6207 LGATE V +5V BAT VCC BOOT UGATE EN PWM PHASE DRIVE ...

Page 4

... UGATE Rise Time (Note 5) LGATE Rise Time (Note 5) UGATE Fall Time (Note 5) LGATE Fall Time (Note 5) UGATE Turn-Off Propagation Delay LGATE Turn-Off Propagation Delay 4 ISL6207 Thermal Information Thermal Resistance (Typical) + 0.3V SOIC Package (Note QFN Package (Notes 3, 4 ...

Page 5

... MOSFET. This pin provides a return path for the upper gate driver. Description Operation Designed for speed, the ISL6207 dual MOSFET driver controls both high-side and low-side N-Channel FETs from one externally provided PWM signal. A rising edge on PWM initiates the turn-off of the lower MOSFET (see Timing Diagram) ...

Page 6

... MOSFET and prevent a shoot through caused by the high dv/dt of the phase node. Three-State PWM Input A unique feature of the ISL6207 and other Intersil drivers is the addition of a shutdown window to the PWM input. If the PWM signal enters and remains within the shutdown window for a set holdoff time, the output drivers are disabled and both MOSFET gates are pulled and held low ...

Page 7

... L MOSFET selection and any external capacitance added to the gate pins. The I V product is the quiescent power DDQ CC of the driver and is typically negligible. 7 ISL6207 1000 900 800 700 600 500 400 300 200 100 0 ...

Page 8

... Worst-case leakage currents are on the order of pico-amps; therefore, a 10kΩ resistor, connected from UGATE to PHASE, is more than sufficient to bleed off any stray leakage current. This resistor will not affect the normal performance of the driver or reduce its efficiency. 8 ISL6207 FN9075.8 December 2, 2005 ...

Page 9

... Quad Flat No-Lead Plastic Package (QFN) Micro Lead Frame Plastic Package (MLFP) 9 ISL6207 L8.3x3 8 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE (COMPLIANT TO JEDEC MO-220VEEC ISSUE C) MILLIMETERS SYMBOL MIN NOMINAL A 0. 0.23 D 3.00 BSC D1 2.75 BSC D2 0.25 E 3.00 BSC E1 2.75 BSC E2 0. 0. θ ...

Page 10

... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 10 ISL6207 M8.15 (JEDEC MS-012-AA ISSUE C) 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE ...

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