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XRP7720 Datasheet Preview

XRP7720 Datasheet

Quad Output Universal Customizable PMIC

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XRP7720
Quad Output Universal Customizable PMIC with PFM
January 2014
GENERAL DESCRIPTION
The XRP7720 is a quad output universal
customizable PMIC comprised of a quad
channel Digital Pulse Width Modulated (DPWM)
Step down (buck) controller and 5V LDO. A
wide 4.75V to 5.5V and 5.5V to 18V input
voltage dual range allows for single supply
operation from standard power rails. It is pin
compatible to the popular XRP7724 and
provides full flexibility during the development
phase while offering a cost effective option for
high volume production units.
With integrated FET gate drivers, it can
operate from 105kHz to 1.23MHz with
independent
channel-to-channel
programmable operating frequency, the
XRP7720 reduces overall component count
and solution footprint while optimizing
conversion efficiencies. A selectable digital
Pulse Frequency Mode (DPFM) and low
operating current result in better than 80%
efficiency down to 10mA load provides support
for portable and Energy Star compliant
applications. Each XRP7720 output channel is
individually programmable down to a
minimum 0.6V with a resolution of 2.5mV, and
configurable for precise soft start and soft stop
sequencing, including delay and ramp control.
During development, the XRP7720ILB-DEV is
configured using PowerArchitectTM 5.1 (PA 5.1)
through an I2C interface, allowing for short
development of the power system and short
time to market for the entire system. Once
development is completed and volume
production is ready to commence, Exar will
assign a unique part suffix and deliver a
customized XRP7720.
Built-in independent output over voltage, over
temperature, over-current and under voltage
lockout protections ensure safe operation
under abnormal operating conditions.
The XRP7720 is offered in a RoHS compliant,
“green”/halogen free 44-pin TQFN package.
Rev. 1.0.0
FEATURES
Pin Compatible to XRP7724
SMBus Compliant I2C Interface available
on XRP7720ILB-DEV Only
Supported by PowerArchitect™ 5.1
XRP7720ILB-DEV Only
Quad Channel Step-down Controller
Digital PWM 105kHz-1.23MHz Operation
Individual Channel Frequency Selection
Patented digital PFM with Ultrasonic Mode
Integrated MOSFET Drivers
Programmable 5 coefficient PID control
4.75V to 18V Input Voltage
4.75V-5.5 and 5.5V-18V Input Range
0.6V to 5.5V Output voltage
3 x 15V Capable PSIOs + 2 x GPIOs
Full Start/Stop Sequencing Support
Built-in Thermal, Over-Current, UVLO
and Output Over-Voltage Protections
On Board 5V Standby LDO
7x7mm TQFN44 Package
APPLICATIONS
Blade Servers
Micro Servers
Network Adapter Cards
Switches/Routers
Video Surveillance Systems
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 Fax. +1 510 668-7001




Exar

XRP7720 Datasheet Preview

XRP7720 Datasheet

Quad Output Universal Customizable PMIC

No Preview Available !

XRP7720
Quad Output Universal Customizable PMIC with PFM
January 2014
TYPICAL APPLICATION DIAGRAM
Rev. 1.0.0
5V
+
VOUT1
600kHz +
1.5V
VIN
5V (optional)
VCC
LDO5
V5EXT
DVDD(1.8V)
AVDD(1.8V)
EN
VOUT1
VOUT2
VOUT3
VOUT4
GH2
BST2
LX2
GL2
GL_RTN2
XRP7720
GH3
BST3
LX4
GL3
GL_RTN3
VCCD3-4
LDO5
LDO5
5V
+ VOUT2
1.2MHz +
1.05V
VIN
+ VOUT3
3.3V
300kHz +
VIN
+ VOUT4
5V
300kHz +
Figure 1 XRP7720 Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 Fax. +1 510 668-7001


Part Number XRP7720
Description Quad Output Universal Customizable PMIC
Maker Exar
Total Page 28 Pages
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