MAX8523EEE Maxim Integrated Products, MAX8523EEE Datasheet

no-image

MAX8523EEE

Manufacturer Part Number
MAX8523EEE
Description
MOSFET & Power Driver ICs Gate Driver
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX8523EEE

Lead Free Status / Rohs Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MAX8523EEE
Manufacturer:
MAXIM/美信
Quantity:
20 000
The MAX8523 dual-phase gate driver, along with the
MAX8524*/MAX8525 multiphase controllers, provides
flexible 2- to 8-phase CPU core-voltage supplies. The
0.5Ω/0.95Ω driver resistance allows up to 30A output
current per phase.
Each MOSFET driver in the MAX8523 is capable of dri-
ving 3000pF capacitive loads with only 15ns propaga-
tion 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-pro-
grammable dead time controls high-side MOSFET turn-
on. 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°C to +85°C operation.
19-2860; Rev 0; 4/03
Pentium is a trademark of Intel Corp.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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
________________________________________________________________ Maxim Integrated Products
+4.5V TO +6.5V GATE
DRIVE SUPPLY
PHASE 1 OUTPUT
3V TO 13.2V
High-Speed, Dual-Phase Gate Driver for
General Description
Multiphase, Step-Down Converters
Applications
13
3
1
2
5
6
4
8
PGND1
BST1
DH1
LX1
DL1
PV1
PV2
DLY
MAX8523
o 6A Peak Gate-Drive Current
o Up to 1.2MHz Operation
o Up to 6.5V Gate-Drive Voltage
o 0.5Ω/0.95Ω Low-Side Drivers
o Capable of 30A Output per Phase
o Adaptive Shoot-Through Protection
o User-Programmable Delay Time
o TTL and CMOS Input Compatible
o UVLO for Proper Sequencing
o Flexible 2- to 8-Phase Implementation with
o Space-Saving (4.9mm
*Future product. Contact factory for availability.
MAX8523EEE
MAX8524 and MAX8525
Package
PGND2
PWM2
PWM1
BST2
DH2
V
LX2
DL2
CC
PART
7
16
15
14
12
11
10
9
Typical Operating Circuit
PHASE 2 PWM INPUT
PHASE 1 PWM INPUT
-40°C to +85°C
TEMP RANGE
Ordering Information
6mm) 16-Pin QSOP
PHASE 2 OUTPUT
PIN-PACKAGE
16 QSOP
Features
1

Related parts for MAX8523EEE

MAX8523EEE Summary of contents

Page 1

... Capable of 30A Output per Phase o Adaptive Shoot-Through Protection o User-Programmable Delay Time o TTL and CMOS Input Compatible o UVLO for Proper Sequencing o Flexible 2- to 8-Phase Implementation with MAX8524 and MAX8525 o Space-Saving (4.9mm Package Applications PART MAX8523EEE *Future product. Contact factory for availability. 1 BST1 DH1 BST2 3 LX1 ...

Page 2

High-Speed, Dual-Phase Gate Driver for Multiphase, Step-Down Converters ABSOLUTE 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 ...

Page 3

High-Speed, Dual-Phase Gate Driver for Multiphase, Step-Down Converters ELECTRICAL CHARACTERISTICS ( VCC PV1 PV2 BST1 BST2 (Note 1) PARAMETER UNDERVOLTAGE PROTECTION Supply Voltage Range V UVLO V DLY = V I VCC ...

Page 4

High-Speed, Dual-Phase Gate Driver for Multiphase, Step-Down Converters (PV1 = PV2 = 5V, 3nF capacitive load DLY DH RISE AND FALL vs. CAPACITIVE LOAD RISE FALL ...

Page 5

High-Speed, Dual-Phase Gate Driver for Multiphase, Step-Down Converters PIN NAME Boost Flying Capacitor Connection, Phase 1. Connect a 0.22µF or higher ceramic capacitor between 1 BST1 BST1 and LX1. 2 DH1 High-Side Gate-Driver Output, Phase 1 3 LX1 Switching Node ...

Page 6

High-Speed, Dual-Phase Gate Driver for Multiphase, Step-Down Converters PWM1 V CC DLY PWM2 Figure 1. MAX8523 Functional Diagram Undervoltage Lockout (UVLO) When V is below the UVLO threshold (3.5V typ), DH_ CC and DL_ are held low. Once V CC ...

Page 7

High-Speed, Dual-Phase Gate Driver for Multiphase, Step-Down Converters 3V TO 13.5V +4. 1.6V/20A C5 Q2 Figure 2. Typical Application Circuit PV_ provides the supply voltages for the low-side dri- vers (DL_). The decoupling capacitors at ...

Page 8

High-Speed, Dual-Phase Gate Driver for Multiphase, Step-Down Converters Table 1. Typical Component Values (250kHz Operation, 20A/Phase Output Current) COMPONENT 5 x 330µF/25V, 23mΩ (max) ESR input filtering C1 capacitor C2 2.2µF/10V ceramic capacitor C3, C4 0.22µF/10V ceramic capacitors C5, C6 ...

Page 9

High-Speed, Dual-Phase Gate Driver for Multiphase, Step-Down Converters Applications Information Power Dissipation Power dissipation in the IC package comes mainly from switching the MOSFETs. Therefore function of both switching frequency and the total gate charge of the ...

Page 10

... Maxim reserves the right to change the circuitry and specifications without notice at any time. implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © ...

Related keywords