Programmable Power Technology.

Transcription

1 Programmable Power Technology

2 Exar s Power XR Programmable Power Solutions Exar s Power XR ICs integrate the best of both worlds; the low cost and flexibility of digital control as well as the robust power capabilities of high performance analog power switches. Power XR products reduce development time from weeks to hours, enabling a significant time-to-market advantage for system design engineers. Additionally, Exar s PowerArchitect is an easy to use software environment, empowering engineers to create complex sequencing schemes, power systems, and modify voltage, current or other parameters in seconds. Exar s Power XR Family Feature Advantage Benefit (re)configurability / Flexibility Complete, Feature-Rich Power SoC Solution Digitally (re)configurable SoC power supply 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. PowerArchitect Rapid development, easy to use Enables fast, simple design of complex power 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 Replaces cumbersome discrete solutions, reduces footprint and cost of passive components 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. Power SoC Solution replaces up to 13 discrete ICs in 6x6 mm package. Excellent Efficiency Up to 93% efficiency on 4 combined voltage rails. Efficiency 100% 95% 90% 85% 80% 75% 70% 65% 60% 55% XRP Channel Efficiency Vin = 5V Vout = 1, 1.2, 1.8, 2.5V Iout = 5A max. Digitally (re)configurable SOC power supply solution Useable across a wide range of Vin, and broad cross-section of embedded processors, ASICs, or SOCs. PowerArchitect enables fast, simple design of complex power solution. 50% The Power XR Product Family The Power XR family is comprised of six Pulse-Width Modulated (PWM) step-down DC-DC controllers with a built-in LDO for standby power and GPIOs. The latest addition to the family, XRP7724, adds Pulse Frequency Modulation (PFM) for mobile applications. The 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

3 Part Number Vin Range Vout Range Gate Drive Pull Up / Down I/Q Package type Junction Temperature Range XRP V 20V 0.9V 5.1V 3ohm / 3ohm 9mA TQFN40-40 C to 125 C XRP V 20V 0.9V 5.1V 5ohm / 1.8ohm 9mA TQFN40-40 C to 125 C XRP V 20V 0.9V 5.1V 3ohm / 1.8ohm 9mA TQFN40-40 C to 125 C XRP V 25V 0.9V 5.1V 6ohm / 3ohm 9mA TQFN40-40 C to 125 C XRP V 25V 0.9V 5.1V 6ohm / 3ohm 9mA TQFN32-40 C to 125 C XRP V 25V 0.6V 5.1V 4ohm / 2ohm 2mA TQFN44-40 C to 125 C Applications Power XR Architecture Overview Mobile Computing Industrial Equipment Medical Instruments Telecom Set Top Box Point of Sale Networking Vin Internal LDO Vin1 DPWM Switching Controller #1 Vout1t Power XR Family Features Three to four switching buck (step-down) controllers each with internal drivers Output voltages programmable from 0.9V to 5.1V Up to 6 (re)configurable GPIO pins Fully programmable via I²C interface 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 Complete power monitoring and reporting Independently controlled start-up delay and ramp for each regulator 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 overcurrent protection Non-volatile memory for system GPIO I²C DPWM Switching Controller #2 DPWM Switching Controller #3 DPWM Switching Controller #4 Soft Start/Stop Voltage Ramp and Timing Control GPIO Ports Under Voltage Lockout I²C Interface Vref Power- Good Monitor Configuration Registers Configurable LDO Linear Voltage Regulator Over- Temp Monitor Fault Handling OTP Memory Vin2 Vin3 Vin4 LDO Vout2 Vout3 Vout4 3

4 Exar s PowerArchitect Exar s PowerArchitect 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 PowerArchitect from powerxr.exar.com to start and finish your design today. XRP7724: World s Fi rst Digital PWM Cont roller for Mobile Systems Latest Four-Channel IC Offers Industry s Most Advanced Feature Set, Lowest Power Consumption, and Highest Flexibility For Any Programmable Power Controller The XRP7724 offers a wide input voltage range (4.75V to 25V), and output range (0.6V to 5.1V), with a built-in Low-Dropout regulator (LDO) for standby power, power sequencing capability, and integrated gate drivers. These power system ICs contain patented Digital Pulse Frequency Modulator (DPFM) with ultrasonic mode. The ICs contain an integrated LDO regulator that provides a fifth voltage supply, which can also be employed as a standby-voltage source. The devices contain integrated gate drivers for the switching outputs and up to six General Purpose Input/Output (GPIO) pins. Exar s PowerArchitect software design tool enables designers to intelligently configure the power supply s voltage setting and current thresholds, fault monitoring and response, soft start and active shutdown timing, and channel sequencing, phase shift management, and loop response, amongst other features. The ICs use a digital PID (proportional, integral, differential) control algorithm that performs full-digital loop control at switching frequencies to 1.2 MHz. VOUT1 600kHz 1.5V_RUN 3.3V_ALW VIN LDO5 5VEXT LDO3_3 DVDD (1.8V) AVDD (1.8V) EN (Whole Chip) GND VOUT1 VOUT2 VOUT3 VOUT4 BFB PSIO0 PSIO1 PSIO2 GPIO0 GPIO1 GH1 BST1 LX1 GL1 PGND1 XRP7724 SDA SCL PGND4 GL4 LX4 VCCD1-2 BST4 GH4 GH2 BST2 LX2 GL2 PGND2 GH3 BST3 LX4 GL3 PGND3 VCCD3-4 DC Source 1.2MHz VOUT2 DC Source PSIO2 3.3V_ALW VOUT3 300kHz 1.05V_RUN 3.3V_LAN 3.3V_RUN VOUT4 PSIO1 5V_RUN 300kHz BFB PSIO0 4

5 Evaluation Boards Evaluation boards for all Power XR family of devices are available along with their user manual. Actual 3-Channel Power Supply Solution XCM XPM Complete kits available to get you up and running in a minute. Technical Resources Power XR in the News Visit to learn more about Power XR products, development tools and support. Datasheets XRP7704 Datasheet XRP7708 Datasheet XRP7713 Datasheet XRP7714 Datasheet XRP7724 Datasheet XRP7740 Datasheet PowerArchitect Software Programming Boards XRP77XX-XCM (Exar Configuration Module) XRP77XX-XPM (Exar Programming Module) Articles/White Papers Programmable Power Systems Now Essential for Advanced Processors 17 Ways Field Programmable PS Reduce Risk Digital power supplies make a system tamper proof DDR2 And DDR3 Memory Systems Require New Power And Termination Solutions Technical Support powerxr@exar.com 5

6 Ex ar Corporation Kato Road Fremont, CA U.S.A. T F E x A R i s a T R A d emark o f E X A R CorpoRATion. A l l ot h ER T R A d emarks a n d R EgiSTEREd T R A d emarks A R E propert y o f t h eir R ES p ECTive ow n ERS. X R p w R X R B R O E X A R CorpoRATion