L6714 Datasheet, PDF (1/70 Pages) STMicroelectronics – 4 phase controller with embedded drivers for Intel VR10, VR11 and AMD 6Bit CPUs

L6714
4 phase controller with embedded drivers
for Intel VR10, VR11 and AMD 6Bit CPUs
Features
■ 0.5% output voltage accuracy
■ 7/8 bit programmable output up to 1.60000V -
Intel VR10.x, VR11 DAC
■ 6 bit programmable output up to 1.5500V -
AMD 6Bit DAC
■ High current integrated gate drivers
■ Full differential current sensing across inductor
or low side MOSFET
■ Embedded VRD thermal monitor
■ Integrated remote sense buffer
■ Dynamic VID management
■ Adjustable reference voltage offset
■ Programmable Soft-Start
■ Low-Side-Less startup
■ Programmable over voltage protection
■ Preliminary over voltage
■ Constant over current protection
■ Oscillator internally fixed at 150kHz externally
adjustable
■ Output enable
■ SS_END / PGOOD signal
■ TQFP64 10mm x 10mm package
with Exposed Pad
Application
■ High current VRD for desktop CPUs
■ Workstation and server CPU power supply
■ VRM modules
Order codes
TQFP64 (Exposed Pad)
Description
L6714 implements a four phase step-down
controller with 90º phase-shift between each
phase with integrated high current drivers in a
compact 10mm x 10mm body package with
exposed pad.
The device embeds selectable DACs: the output
voltage ranges up to 1.60000V (both Intel VR10.x
and VR11 DAC) or up to 1.5500V (AMD 6Bit
DAC) managing D-VID with ±0.5% output voltage
accuracy over line and temperature variations.
Additional programmable offset can be added to
the reference voltage with a single external
resistor.
The controller assures fast protection against load
over current and under / over voltage (in this last
case also before UVLO). In case of over-current
the system works in Constant Current mode until
UVP.
Selectable current reading adds flexibility to the
design allowing current sense across inductor or
LS MOSFET.
System Thermal Monitor is also provided allowing
system protection from over-temperature
conditions.
Part number
Package
Packaging
L6714
L6714TR
TQFP64
TQFP64
Tube
Tape and reel
November 2006
Rev 3
1/70
www.st.com
70