PX3511DDDG-RA

PX3511DDDG-RA Datasheet

PX3511D

Part	Datasheet
PX3511DDDG-RA	PX3511DDDG-RA (pdf)

PDF Datasheet Preview
Data Sheet February 26, 2007 PX3511D FN6463.0 Advanced Synchronous Rectified Buck MOSFET Driver with Protection Features The PX3511D is high frequency MOSFET driver specifically designed to drive upper and lower power N-Channel MOSFETs in a synchronous rectified buck converter topology. This driver combined with the PX3511D Digital Multi-Phase Buck PWM controller and N-Channel MOSFETs forms a complete core-voltage regulator solution for advanced microprocessors. The PX3511D drives both upper and lower gates over a range of 4.5V to 13.2V. This drive-voltage provides the flexibility necessary to optimize applications involving tradeoffs between gate charge and conduction losses. 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. The PX3511D includes 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. The PX3511D also features an input that recognizes a highimpedance state, working together with Intersil multi-phase 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. Ordering Information TEMP. PART NUMBER PART RANGE Note MARKING °C PACKAGE PKG. Pb-free DWG. # PX3511DDDG-RA 11DD 0 to +85 10 Ld 3x3 DFN L10.3X3 Tape and Reel 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. • Dual MOSFET Drives for Synchronous Rectified Bridge • Pin-to-pin Compatible with ISL6596 • Advanced Adaptive Zero Shoot-Through Protection - Body Diode Detection - Auto-zero of rDS ON Conduction Offset Effect • Adjustable Gate Voltage for Optimal Efficiency • 36V Internal Bootstrap Schottky Diode • Bootstrap Capacitor Overcharging Prevention • Supports High Switching Frequency up to 2MHz - 3A Sinking Current Capability - Fast Rise/Fall Times and Low Propagation Delays • Optimized for 3.3V PWM Input • 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 • Dual Flat No-Lead DFN Package - Near Chip-Scale Package Footprint Improves PCB Efficiency and Thinner in Profile • Pb-Free Plus Anneal Available RoHS Compliant • Optimized for POL DC/DC Converters for IBA Systems • Core Regulators for and Microprocessors • 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 TB389 “PCB Land Pattern Design and Surface Mount Guidelines for QFN MLFP Packages” 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 Intersil Americas Inc. All Rights Reserved All other trademarks mentioned are the property of their respective owners. Pinouts PX3511D PX3511D 10 LD 3x3 DFN TOP VIEW UGATE 1 BOOT 2 N/C 3 PWM 4 GND 5 10 PHASE 9 PVCC 8 N/C 7 VCC 6 LGATE Block Diagram VCC PWM UVCC Pre-POR OVP 13.6K 6.4K POR/ CONTROL LOGIC PX3511D SHOOTTHROUGH PROTECTION LVCC BOOT UGATE PHASE PVCC UVCC = PVCC FOR PX3511D

PDF Datasheet Preview

Data Sheet

February 26, 2007

PX3511D

FN6463.0

Advanced Synchronous Rectified Buck MOSFET Driver with Protection Features

The PX3511D is high frequency MOSFET driver specifically designed to drive upper and lower power N-Channel MOSFETs in a synchronous rectified buck converter topology. This driver combined with the PX3511D Digital Multi-Phase Buck PWM controller and N-Channel MOSFETs forms a complete core-voltage regulator solution for advanced microprocessors.

The PX3511D drives both upper and lower gates over a range of 4.5V to 13.2V. This drive-voltage provides the flexibility necessary to optimize applications involving tradeoffs between gate charge and conduction losses.

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. The PX3511D includes 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.

The PX3511D also features an input that recognizes a highimpedance state, working together with Intersil multi-phase 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.
Ordering Information

TEMP.

PART NUMBER PART RANGE

Note

MARKING °C

PACKAGE PKG. Pb-free DWG. #

PX3511DDDG-RA 11DD
0 to +85 10 Ld 3x3 DFN L10.3X3 Tape and Reel

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.
• Dual MOSFET Drives for Synchronous Rectified Bridge
• Pin-to-pin Compatible with ISL6596
• Advanced Adaptive Zero Shoot-Through Protection
- Body Diode Detection - Auto-zero of rDS ON Conduction Offset Effect
• Adjustable Gate Voltage for Optimal Efficiency
• 36V Internal Bootstrap Schottky Diode
• Bootstrap Capacitor Overcharging Prevention
• Supports High Switching Frequency up to 2MHz - 3A Sinking Current Capability - Fast Rise/Fall Times and Low Propagation Delays
• Optimized for 3.3V PWM Input
• 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
• Dual Flat No-Lead DFN Package - Near Chip-Scale Package Footprint Improves PCB

Efficiency and Thinner in Profile
• Pb-Free Plus Anneal Available RoHS Compliant
• Optimized for POL DC/DC Converters for IBA Systems
• Core Regulators for and Microprocessors
• 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 TB389 “PCB Land Pattern Design and Surface Mount Guidelines for QFN MLFP Packages”

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 Intersil Americas Inc. All Rights Reserved

All other trademarks mentioned are the property of their respective owners.

Pinouts

PX3511D

PX3511D 10 LD 3x3 DFN

TOP VIEW

UGATE 1 BOOT 2 N/C 3 PWM 4 GND 5
10 PHASE 9 PVCC 8 N/C
7 VCC 6 LGATE

Block Diagram

VCC PWM

UVCC

Pre-POR OVP
13.6K 6.4K

POR/ CONTROL

LOGIC

PX3511D

SHOOTTHROUGH PROTECTION

LVCC

BOOT

UGATE

PHASE

PVCC UVCC = PVCC FOR PX3511D

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Datasheet ID: PX3511DDDG-RA 639218