Multi-chip Module. FDMF8700 Datasheet

FDMF8700 Datasheet PDF, Equivalent


Part Number

FDMF8700

Description

Driver plus FET Multi-chip Module

Manufacture

Fairchild Semiconductor

Total Page 13 Pages
PDF Download
Download FDMF8700 Datasheet PDF


FDMF8700 Datasheet
www.DataSheet4U.com
March 2007
FDMF8700
Driver plus FET Multi-chip Module
tm
Benefits
„ Fully optimized system efficiency. Higher efficiency levels
are achievable compared with conventional discrete
components.
„ Space savings of up to 50% PCB versus discrete solutions.
„ Higher frequency of operation.
„ Simpler system design and board layout. Reduced time in
component selection and optimization.
Features
„ 12V typical Input Voltage
„ Output current up to 30A
„ 500KHz switching frequency capable
„ Internal adaptive gate drive
„ Integrated bootstrap diode
„ Peak Efficiency >90%
„ Under-voltage Lockout
„ Output disable for lost phase shutdown
„ Low profile SMD package
„ RoHS Compliant
General Description
The FDMF8700 is a fully optimized integrated 12V Driver plus
MOSFET power stage solution for high current synchronous
buck DC-DC applications. The device integrates a driver IC and
two Power MOSFETs into a space saving, 8mm x 8mm, 56-pin
Power88™ package. Fairchild Semiconductor’s integrated
approach optimizes the complete switching power stage with
regards to driver to FET dynamic performance, system
inductance and overall solution ON resistance. Package
parasitics and problematical layouts associated with
conventional discrete solutions are greatly reduced. This
integrated approach results in significant board space saving,
therefore maximizing footprint power density. This solution is
based on the Intel™ DrMOS specification.
Applications
„ Desktop and server VR11.x V-core and non V-core buck
converters.
„ CPU/GPU power train in game consoles and high end
desktop systems.
„ High-current DC-DC Point of Load (POL) converters
„ Networking and telecom microprocessor voltage regulators
„ Small form factor voltage regulator modules
Powertrain Application Circuit
12V
CVCC
DISB
PWM
Input
VCIN
DISB
VIN
BOOT
PWM
VSWH
CGND PGND
CBOOT
OUTPUT
COUT
Figure 1. Powertrain Application Circuit
Ordering Information
Part
FDMF8700
Current Rating
Max
[A]
30
Input Voltage
Typical
[V]
12
Frequency
Max
[KHz]
500
©2007 Fairchild Semiconductor Corporation
FDMF8700 Rev. C3
1
Device
Marking
FDMF8700
www.fairchildsemi.com

FDMF8700 Datasheet
Functional Block Diagram
DISB
PWM
BOOT VCIN HDRV VIN
2.2 1.2
VCIN
1.2
VSWH
Pin Configuration
CGND
LDRV PGND
Figure 2. Functional Block Diagram
1 14
PWM 56
DISB
NC
NC
NC
CGND
VSWH
VSWH
VSWH
VSWH
VSWH
VSWH
VSWH
VSWH 43
(CGND)
(VIN)
(VSWH)
15 VIN
VIN
VIN
VIN
VIN
VIN
VSWH
PGND
PGND
PGND
PGND
PGND
PGND
28 PGND
42 29
FDMF8700 Rev. C3
Figure 3. Power88 56L Bottom View
2
www.fairchildsemi.com


Features Datasheet pdf www.DataSheet4U.com FDMF8700 Driver plu s FET Multi-chip Module March 2007 FD MF8700 Driver plus FET Multi-chip Modul e Benefits „ Fully optimized system ef ficiency. Higher efficiency levels are achievable compared with conventional d iscrete components. „ Space savings of up to 50% PCB versus discrete solution s. „ Higher frequency of operation. „ Simpler system design and board layout . Reduced time in component selection a nd optimization. tm General Descripti on The FDMF8700 is a fully optimized in tegrated 12V Driver plus MOSFET power s tage solution for high current synchron ous buck DC-DC applications. The device integrates a driver IC and two Power M OSFETs into a space saving, 8mm x 8mm, 56-pin Power88™ package. Fairchild Se miconductor’s integrated approach opt imizes the complete switching power sta ge with regards to driver to FET dynami c performance, system inductance and ov erall solution ON resistance. Package p arasitics and problematical layouts associated with conventional discre.
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