XRP7740 [EXAR]
Exar’s PowerXR D igital Power Solutions; Exar的PowerXR数字电源解决方案
| 型号： | XRP7740 |
| 厂家： | 
EXAR CORPORATION |
| 描述： | Exar’s PowerXR D igital Power Solutions |
| 文件： | 总6页 (文件大小：1866K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Programmable Power Technology
2010
www.exar.com
Exar’s PowerXR Digital Power Solutions
Exar’s PowerXR ICs integrate the best of both worlds; the low cost and flexibility of digital power control as well as the robust
power capabilities of high performance analog power switches. PowerXR products reduce development time from weeks to
hours, enabling a significant time-to-market advantage for system design engineers.
Additionally, Exar’s Digital Power Studio™ is an easy to use software environment, empowering engineers to create complex
sequencing schemes and power systems, and modify voltage, current or other parameters in seconds.
Exar’s PowerXR Family
Feature
Advantage
Benefit
(re)configurability /
Flexibility
•
Digitally (re)configurable
SoC power supply solution
•
Reduces design effort by using simple GUI
instead of changing hardware
Reduces risk by enabling customer to repair/
upgrade power supply when already at
end-customer location
•
•
•
Use common platform across multiple
customer designs
Complete, Feature-Rich
Power SoC Solution
•
•
Power SoC Solution replaces up to 13
discrete ICs in 6x6 mm package
Usable across a wide range of Vin,
and broad cross-section of embedded
processors, ASICs, or SOCs.
Replaces cumbersome discrete solutions,
reduces footprint and cost of passive
components
Digital Power Studio™
•
•
Rapid development, easy to use
Enables fast, simple design of complex
power solution
•
•
Accelerates time to market from first meeting
to production in as little as 2 weeks
Enable wide range of design engineers to
leverage their level of expertise for optimal
design
Small SoC power supply solution with 4
power controllers, 1 LDO and all power
management on a single chip.
Digitally (re)configurable SOC power supply solution
Useable across
a wide range of
Vin, and broad
cross-section
of embedded
processors,
Power SoC Solution replaces up to 13
discrete ICs in 6x6 mm package.
XRP7714 4-Channel Efficiency
ASICs, or SOCs.
Excellent Efficiency
100%
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
Up to 93% efficiency on 4
combined voltage rails.
Digital Power
Studio™ enables
fast, simple design of complex power solution.
Vin = 5V
Vout = 1 , 1.2, 1.8, 2.5V
Iout = 5A max.
1
2
3
4
5
6
The PowerXR Product Family
The PowerXR family is comprised of five Pluse-Width Modulated (PWM) step-down DC-DC controllers with a built-in LDO for standby
power and GPIOs. The XRP7704, XRP7708, XRP7713, XRP7714, and XRP7740 devices provide a complete power management
solution in one IC and are fully programmable via the included I²C serial interface. Independent Digital Pulse-Width Modulator
(DPWM) channels regulate output voltages and provide all required protection functions such as current limiting and over-
voltage protection.
2
Operating
Voltage
Min.
Output
Voltage
Part
Number
Output
Current
Quiescent
Current
Channels
Frequency Package Features
Min.
Max.
DPWM Controller
I²C (re)configurable
Built-in 3.3V/5V LDO - Integrated Drivers
Full protection
Prog.
0.3MHz to
1.5MHz
XRP7713
XRP7714
XRP7704
XRP7708
XRP7740
3
4
4
4
4
3 x 5A
5A
4.75V
25V
0.9V
0.9V
0.9V
0.9V
0.9V
9mA
9mA
9mA
9mA
9mA
TQFN-32
TQFN-40
TQFN-40
TQFN-40
TQFN-40
DPWM Controller
I²C (re)configurable
Built-in 3.3V/5V LDO - Integrated Drivers
Full protection
Prog.
0.3MHz to
1.5MHz
4.75V
6.5V
6.5V
6.5V
25V
20V
20V
20V
DPWM Controller
I²C (re)configurable
Built-in 3.3V/5V LDO - Integrated Drivers
Full protection
Prog.
0.3MHz to
1.5MHz
4 x 5A
DPWM Controller
I²C (re)configurable
Built-in 3.3V/5V LDO - Integrated Drivers
Full protection
Prog.
0.3MHz to
1.5MHz
2 x 5A
2 x 8A
DPWM Controller
I²C (re)configurable
Built-in 3.3V/5V LDO - Integrated Drivers
Full protection
Prog.
0.3MHz to
1.5MHz
2 x 5A
2 x 15A
PowerXR Architecture Overview
Applications
•
Consumer - Set-Top Box (STB), IP Camera, Plasma
Display Panel (PDP)
Vin
•
•
•
•
Computing - Server, Storage Systems
Industrial - Automatic Test Equipment, Point of Sale
Medical Equipment
Networking and Telecommunications Equipment,
Ethernet Adapter cards
Internal LDO
Vin1
FET
DPWM Switching Controller #1
DPWM Switching Controller #2
DPWM Switching Controller #3
DPWM Switching Controller #4
Vout1t
Driver
Vin2
PowerXR Family Features
FET
Driver
Vout2
•
Three to four switching buck (step-down) controllers
each with internal FET drivers
Vin3
•
•
•
•
Output voltages programmable from 0.9V to 5.1V
Up to 6 (re)configurable GPIO pins
Fully programmable via I²C interface
FET
Driver
Vout3
Independent Digital Pulse Width Modulator (DPWM)
channels with five coefficient PID control
High Integration: elimination of external circuits and
components required for compensation, parameter
adjustment and interface
Programmable DPWM frequency range (300 kHz
to 1.5 MHz) enables efficiency and component size
optimization
Vin4
FET
Driver
Vout4
•
•
Soft Start/Stop Voltage Ramp and Timing Control
•
•
Complete power monitoring and reporting
Independently controlled start-up delay and ramp for
each regulator
GPIO
Ports
Configurable LDO
Linear Voltage Regulator
LDO
GPIO
Vref
•
•
Independently controlled soft-stop delay and ramp for
each regulator with a programmable stop voltage
Over-temperature protection (OTP) and Under Voltage
Lockout (UVLO); per-channel over-current protection
(OCP) and over-voltage protection (OVP)
Built-in LDO (configurable to 3.3V or 5V) with over-
current protection
Under
Voltage
Lockout
Power-
Good
Monitor
Over-
Fault
Temp
Handling
Monitor
•
•
I²C
Interface
Configuration
Registers
OTP
Memory
I²C
Non-volatile memory for system
3
Exar’s Digital Power Studio™
Exar’s Digital Power Studio (DPS™) interactive design tool enables you to create a complete 5 channel optimized power
supply design with complex sequencing and many advanced power management features all with a few clicks of the mouse.
Download the latest DPS from ww.exar.com/DigitalPower to start and finish your design today.
XRP7740 Application (Vin = 12V, Iout = 3A-15A, Vout = 0.9V-2.5V)
PCI
12V
PCI
3.3V
DDR 1.5V
Avcc 1.0V
XRP7740
Avtt 1.2V
Vcc Int 1.0V
PHY 1.8V
PHY 0.9V
SFP 3.3V
Vcc Aux 2.5V
Sync
Sync
PCI
3.3V
XRP7740
Core
Config
Flash
I/O
VccR VccT
Core
I/O
DDR3
1Gbx16
SFP+
PHY
1042
FPGA
Data[63:0]
VccR VccT
Vtt
Reg
SFP+
Address, Controller
4
Evaluation Boards
Evaluation boards for all PowerXR family of devices are available along with their user manual.
Actual 3-Channel
Power Supply Solution
XPM
XCM
XRP7714EVB
XRP7740EVB
Technical Resources
PowerXR in the News
Visit www.exar.com/digitalpower to learn more about
PowerXR products, development tools and support.
Datasheets
• XRP7704 Datasheet
• XRP7708 Datasheet
• XRP7713 Datasheet
• XRP7714 Datasheet
• XRP7740 Datasheet
Digital Power Studio Software
• ExarDigitalPowerStudio_setup.zip
Evaluation Boards
• XRP7704EVB
• XRP7708EVB
• XRP7714EVB
• XRP7740EVB
• XRP77XX-XCM (Exar Configuration Module)
• XRP77XX-XPM (Exar Programming Module)
• XRP77XX Gerber Files
User Guides
• Digital Power Studio™ Quick Start Guide
• XPM Operator Manual
• XCM Operator Manual
Articles/White Paper
• Programmable Power Systems Now Essential for
Advanced Processors
• 17 Ways Field Programmable PS Reduce Risk
Technical Email Support
• digital.power@exar.com
The XRP7704 and XRP7740
were recognized as one of the
Top 100 new products of 2009
by EDN (Electronic Design Magazine)
5
www.exar.com
EXAR CORPORATION
48720 Kato Road
Fremont, CA 94538
U.S.A.
T. +1.510.668.7000
F. +1.510.668.7001
EXAR IS
A TRADEMARK OF EXAR CORPORATION. ALL OTHER TRADEMARKS AND REGISTERED TRADEMARKS ARE PROPERTY OF THEIR RESPECTIVE OWNERS.
XRPWRXRBRO-0410 ©2010 EXAR CORPORATION
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