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FAN5009MPX

P1-P3P4-P6P7-P9P10-P12P13-P13
www.fairchildsemi.com
REV. 1.0.5 7/22/04
Features
• Drives N-channel High-Side and Low-Side MOSFETs in
a synchronous buck configuration
• 12V High-Side and 12V Low-Side Drive
• Internal Adaptive “Shoot-Through” Protection
• Integrated Bootstrap Diode for High-Side Drive
•Fast rise and fall times
• Switching Frequency Up to 500kHz
•OD
input for Output Disable – allows for synchronization
with PWM controller
• SOIC-8 Package
•Available in low thermal resistance MLP package
Applications
• Multi-phase VRM/VRD regulators for Microprocessor
Power
• High Current/High Frequency DC/DC Converters
• High Power Modular Supplies
General Description
The FAN5009 is a dual, high frequency MOSFET driver,
specifically designed to drive N-Channel power MOSFETs
in a synchronous-rectified buck converter. These drivers,
combined with a Fairchild Multi-Phase PWM controller and
power MOSFETs, form a complete core voltage regulator
solution for advanced microprocessors.
The FAN5009 drives the upper and lower MOSFET gates of
a synchronous buck regulator to 12V
GS
. The upper gate
drive includes an integrated boot diode and requires only an
external bootstrap capacitor (C
BOOT
). The output drivers in
the FAN5009 have the capacity to efficiently switch power
MOSFETs at frequencies up to 500kHz. The circuit’s
adaptive shoot-through protection prevents the MOSFETs
from conducting simultaneously.
The FAN5009 is rated for operation from 0°C to +85°C and
is available in low-cost SOIC-8 or MLP packages.
Typical Application
Figure 1. Typical Application.
SW
FAN5009
12V
VCC
OVERLAP
PROTECTION
CIRCUIT
6
5
7
8
1
PWM
2
C
BOOT
BOOT
VCC
4
Q1
Q2
C
VCC
C
OUT
L1
V
OUT
3
HDRV
LDRV
PGND
OD
FAN5009
Dual Bootstrapped 12V MOSFET Driver
2
REV. 1.0.5 7/22/04
FAN5009 PRODUCT SPECIFICATION
Pin Configuration
Pin Definitions
Functional Block Diagram
Pin # Pin Name Pin Function Description
1 BOOT
Bootstrap Supply Input.
Provides voltage supply to high-side MOSFET driver. Connect to
bootstrap capacitor. See Applications Section.
2 PWM
PWM Signal Input.
This pin accepts a logic-level PWM signal from the controller.
3OD
Output Disable.
When low, this pin disables FET switching (HDRV and LDRV are held low).
4 VCC
Power Input
. +12V chip bias power. Bypass with a 1µF ceramic capacitor.
5 LDRV
Low Side Gate Drive Output.
Connect to the gate of low-side power MOSFET(s).
6 PGND
Power ground.
Connect directly to source of low-side MOSFET(s).
7SW
Switch Node Input
. Connect as shown in Figure 1. SW provides return for high-side
bootstrapped driver and acts as a sense point for the adaptive shoot-thru protection.
8 HDRV
High Side Gate Drive Output
–
Connect to the gate of high-side power MOSFET(s).
BOOT
PWM
OD
VCC
FAN5009
1
2
3
4
8
7
6
5
HDRV
SW
PGND
LDRV
FAN5009M 8-pin SO-8 package
BOOT
PWM
OD
VCC
FAN5009
1
2
3
4
8
7
6
5
HDRV
Paddle
(Ground)
SW
PGND
LDRV
FAN5009MP 8-pin MLP package
(Paddle should be connected to ground or left floating)
PWM
2
OD
3
2.2
1.2
1
BOOT
VCC
4
SW
7
+
VCC
6
5
LDRV
PGND
8
HDRV
1.2
PRODUCT SPECIFICATION FAN5009
REV. 1.0.5 7/22/04
3
Absolute Maximum Ratings
Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at these or other conditions beyond those indicated in
the operational section of this specification is not implied. Exposure to the absolute maximum rating conditions for
extended periods may affect device reliability. Absolute maximum ratings apply individually, not in combination.
Unless otherwise specified, voltages are referenced to PGND.
Notes:
1. For transient derating beyond the levels indicated, refer to the graphs on page 7.
Thermal Information
Recommended Operating Conditions
Parameter Min. Max. Units
VCC to PGND –0.3 15 V
PWM and OD
pins –0.3 5.5 V
SW to PGND
Continuous –1 15 V
Transient ( t=100nsec, F
≤
500kHz)
–5
(1)
25 V
BOOT to SW
–0.3 15 V
BOOT to PGND
Continuous –0.3 30 V
Transient ( t=100nsec, F
≤
500kHz)
33
(1)
V
HDRV
V
SW
–1 V
BOOT
+0.3 V
LDRV
Continuous –0.5 V
CC
+0.3 V
Transient ( t=200nsec)
–2
(1)
V
Parameter Min. Typ. Max. Units
Junction Temperature (T
J
)0150 °C
Storage Temperature –65 150 °C
Lead Soldering Temperature, 10 seconds 300 °C
Vapor Phase, 60 seconds 215 °C
Infrared, 15 seconds 220 °C
Power Dissipation (P
D
) T
A
= 25°C 715 mW
Thermal Resistance, SO8 – Junction to Case
θ
JC
40 °C/W
Thermal Resistance, SO8 – Junction to Ambient
θ
JA
140 °C/W
Thermal Resistance, MLP – Junction to Paddle
θ
JC
4 °C/W
Parameter Conditions Min. Typ. Max. Units
Supply Voltage VCC VCC to PGND 10 12 13.5 V
Ambient Temperature (T
A
)085°C
Junction Temperature (T
J
)0125 °C
P1-P3P4-P6P7-P9P10-P12P13-P13

FAN5009MPX

Mfr. #:
Buy FAN5009MPX
Manufacturer:
ON Semiconductor / Fairchild
Description:
Gate Drivers ANG FG Dual Bootstrp 12V MOSFET Driver
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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