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Part Number: MAX8523
Description: The MAX8523 dual-phase gate driver, along with the MAX8524*/MAX8525 multiphase controllers, provides f...
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MAX8523
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DataSheet
General Description
MAX8523 General Description
The MAX8523 dual-phase gate driver, along with the MAX8524*/MAX8525 multiphase controllers, provides flexible 2- to 8-phase CPU core-voltage supplies. The 0.5/0.95 driver resistance allows up to 30A output current per phase.
Each MOSFET driver in the MAX8523 is capable of driving 3000pF capacitive loads with only 15ns propagation delay and 11ns typical rise and fall times, allowing operations up to 1.2MHz per phase. Adaptive dead time controls low-side MOSFET turn-on, and user-programmable dead time controls high-side MOSFET turnon.
This maximizes converter efficiency while allowing operation with a variety of MOSFETs and controller ICs.
An undervoltage lockout (UVLO) circuit allows proper power-on sequencing. PWM_ signal inputs are both TTL and CMOS compatible.
The MAX8523 is available in a space-saving 16-pin QSOP package, and specified for -40 to +85 operation.
MAX8523 Maximum Ratings
BST_ to PGND_ ....................................................-0.3V to +26V
LX_ to PGND_..........................................................-1V to +14V
DH_ to PGND_..........................................-0.3V to (BST_ + 0.3V)
DH_ to LX_.............................................................-0.3V to +7V
BST_ to LX_ ...........................................................-0.3V to +7V
DL_ to PGND_.............................................-0.3V to (PV_ + 0.3V)
PV_ to PGND_ ........................................................-0.3V to +7V
PGND2 to PGND1 ................................................-0.3V to +0.3V
VCC to PGND1........................................................-0.3V to +7V
DLY to PGND1............................................-0.3V to (VCC + 0.3V)
PWM_ to PGND1 .......................................-0.3V to (PV2 + 0.3V)
VCC to PV1_...........................................................-7V to +0.3V
DH_, DL_ Continuous Current ....................................±200mA
Continuous Power Dissipation (TA = +70)
16-Pin QSOP (derate 8.3mW/ above +70)...............667mW
Operating Temperature Range ...........................-40 to +85
Junction Temperature......................................................+150
Storage Temperature Range .............................-65 to +150
Lead Temperature (soldering, 10s) .................................+300
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
MAX8523 Features
` 6A Peak Gate-Drive Current
` Up to 1.2MHz Operation
` Up to 6.5V Gate-Drive Voltage
` 0.5/0.95 Low-Side Drivers
` Capable of 30A Output per Phase
` Adaptive Shoot-Through Protection
` User-Programmable Delay Time
` TTL and CMOS Input Compatible
` UVLO for Proper Sequencing
` Flexible 2- to 8-Phase Implementation with MAX8524 and MAX8525
` Space-Saving (4.9mm ✕ 6mm) 16-Pin QSOP Package
` Up to 1.2MHz Operation
` Up to 6.5V Gate-Drive Voltage
` 0.5/0.95 Low-Side Drivers
` Capable of 30A Output per Phase
` Adaptive Shoot-Through Protection
` User-Programmable Delay Time
` TTL and CMOS Input Compatible
` UVLO for Proper Sequencing
` Flexible 2- to 8-Phase Implementation with MAX8524 and MAX8525
` Space-Saving (4.9mm ✕ 6mm) 16-Pin QSOP Package
MAX8523 Typical Application
·Core Voltage Supplies for Pentium™ IV
·Microprocessors
·Servers and Workstations
·Desktop Computers
·Voltage Regulator Modules (VRMs)
·DC-to-DC Regulator Modules
·Switches, Routers, and Storage
·Microprocessors
·Servers and Workstations
·Desktop Computers
·Voltage Regulator Modules (VRMs)
·DC-to-DC Regulator Modules
·Switches, Routers, and Storage
MAX8523
PDF/DataSheet Download
- Datasheet: MAX8523
- File Size: 219368 KB
- Manufacturer: Maxim
- Click here to Download
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