|
|
PDF XRP7720 Data sheet ( Hoja de datos )
| Número de pieza | XRP7720 | |
| Descripción | Quad Output Universal Customizable PMIC | |
| Fabricantes | Exar | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de XRP7720 (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
|
No Preview Available !
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
1 page  
XRP7720
Quad Output Universal Customizable PMIC with PFM
INPUT VOLTAGE RANGE AND UNDERVOLTAGE LOCKOUT
Parameter
VCC Range
Min.
5.5
4.75
Typ.
Max.
18
5.5
Units
V
V
Conditions
•
• With VCC connected to LDO5
VOLTAGE FEEDBACK ACCURACY AND OUTPUT VOLTAGE SET POINT RESOLUTION
Parameter
VOUT Regulation Accuracy
Low Output Range
0.6V to 1.6V
PWM Operation
VOUT Regulation Accuracy
Mid Output Range
0.6V to 3.2V
PWM Operation
VOUT Regulation Accuracy
High Output Range
0.6V to 5.5V
PWM Operation
VOUT Regulation Range
VOUT Set Point Resolution1
VOUT Input Resistance
VOUT Input Resistance in PFM
Operation
Power Good and OVP Set Point
Range (from set point)
Power Good and OVP Set Point
Accuracy
Min.
-5
-20
-7.5
-22.5
-15
-45
-20
-50
-30
-90
-40
-100
0.6
-155
-310
-620
-5
-10
-20
Typ.
2.5
5
10
120
90
75
10
1
0.67
Note 1: Fine Set Point Resolution not available in PFM
Max.
5
20
7.5
22.5
15
45
20
50
30
90
40
100
5.5
157.5
315
630
5
10
20
Units
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
V
mV
kΩ
MΩ
mV
mV
Conditions
• 0.6 ≤ VOUT ≤ 1.6V
0.6 ≤ VOUT ≤ 1.6V
• VCC=LDO5
• 0.6 ≤ VOUT ≤ 3.2V
0.6 ≤ VOUT ≤ 3.2V
• VCC=LDO5
• 0.6 ≤ VOUT ≤ 5.5V
0.6 ≤ VOUT ≤ 4.2V
• VCC=LDO5
•
Low Range
Mid Range
High Range
Low Range
Mid Range
High Range
Low Range
Mid Range
High Range
Low Range
Mid Range
High Range
Low Range
Mid Range
High Range
© 2014 Exar Corporation
5/28
Rev. 1.0.0
5 Page 
XRP7720
Quad Output Universal Customizable PMIC with PFM
TYPICAL PERFORMANCE CHARACTERISTICS
All data taken at VCC = 12V, TJ = TA = 25°C, unless otherwise specified - Schematic and BOM from XRP7724EVB. See
XRP7724EVB-DEMO-1 Manual.
Figure 1 PFM to PWM Transition
Figure 2 PWM to PFM Transition
Figure 3 PFM Zero Current Accuracy
Figure 4 LDO5 Brown Out Recovery, No Load
Figure 5 0-6A Transient 300kHz
© 2014 Exar Corporation
11/28
Rev. 1.0.0
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet XRP7720.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| XRP7720 | Quad Output Universal Customizable PMIC | Exar |
| XRP7724 | Quad Channel Digital PWM/PFM Programmable Power Management System | Exar |
| XRP7725 | Intel Node Manager Compatible Programmable Power Management System | Exar |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |