View MAX1587AEVCMAXQU_8927141.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

general description the max1587a evaluation system (ev system) consistsof a max1587a evaluation kit (ev kit) and a companion maxim cmaxqusb board. the max1587a evaluation kit (ev kit) is a fully assem- bled and tested surface-mount printed circuit board (pcb) that evaluates the max1587a power-manage- ment ic (pmic). the ic is optimized for microproces- sor-based applications. the max1587a integrates three high-performance synchronous step-down dc- dc power supplies, two low-dropout (ldo) regulators, a battery backup supply, and various power-manage- ment functions. the maxim smbus interface board (cmaxqusb) allows a pc to use its usb port to emulate an smbus/i 2 c-compatible 2-wire interface. windows 98se/2000/xp-compatible software provides a profes-sional interface to exercise the features of the max1587a. the program is menu driven and offers a graphical user interface (gui) with control buttons and a status display. the max1587a ev system (MAX1587AEVCMAXQU) includes both the ev kit and the cmaxqusb interface board. order the max1587a ev kit if you already have ansmbus interface. features ? 2.6v to 5.5v single-supply operation ? six-output power supply 3.3v at 1.3a (vcc_i/o)2.5v at 900ma (vcc_mem) 0.7v to 1.475v at 500ma (vcc_core), software adjustable 1.3v at 35ma (vcc_pll) 1.1v at 40ma (vcc_sram) backup battery supply (30ma) ? 1mhz switching frequency ? on-board manual reset switch ? optional on-board power-sequencing circuitry ? power-ok output ? low-profile components ? smbus/i 2 c-compatible 2-wire serial interface ? easy-to-use menu-driven software ? software-controlled core voltage adjustment ? fully assembled and tested ? includes windows 98se/2000/xp-compatiblesoftware ? ev system includes usb connectivity evaluates: max1587a max1587a evaluation kit/ evaluation system ________________________________________________________________ maxim integrated products 1 19-3137; rev 1; 2/07 for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. ordering information part temp range ic package smbus interface type max1587aevkit 0? to +70? 40 qfn not included MAX1587AEVCMAXQU 0? to +70? 40 qfn cmaxqusb designation qty description c1 0 not installed (0805) c2?5 0 not installed (0603) c6, c7, c8 0 not installed (0402) c9, c13, c14, c15 c26, c27, c29 7 10? ?0%, 6.3v x5r ceramiccapacitors (0805) tdk c2012x5r0j106m c10, c11, c12, c28 4 4.7? ?0%, 6.3v x5r ceramiccapacitors (0805) tdk c2012x5r0j475m designation qty description c16 1 1500pf ?0%, 50v x7r ceramiccapacitor (0402) tdk c1005x7r1h152k c17 1 0.1? ?0%, 6.3v x5r ceramiccapacitor (0402) tdk c1005x5r0j104m c18 1 0.01? ?0%, 25v x7r ceramiccapacitor (0402) tdk c1005x7r1e103m note: the MAX1587AEVCMAXQU includes both the ev kit and the cmaxqusb interface board. the max1587a ev kit soft-ware is provided with the max1587aevkit; however, the cmaxqusb board is required to interface the ev kit to the com- puter when using the included software. smbus is a trademark of intel corp.windows is a registered trademark of m icrosoft corp. component lists part qty description max1587aevkit 1 max1587a ev kit cmaxqusb+ 1 serial interface board max1587a ev system + denotes lead-free and rohs compliance. max1587a ev kit downloaded from: http:///
evaluates: max1587a max1587a evaluation kit/evaluation system 2 _______________________________________________________________________________________ quick start recommended equipment 4.0v, 2a dc power supply 3.6v backup battery (optional) one voltmeter the max1587a ev system max1587a ev kitmaxim cmaxqusb interface board (usb cable included) a user-supplied windows 98se/2000/xp pc with a spare usb port note: in the following sections, software-related items are identified by bolding. text in bold refers to items directly from the ev kit software. text in bold and underlined refers to items from the windows 98se/2000/xp operating system. procedure the max1587a ev kit is fully assembled and tested.follow the steps below to verify board operation. caution: do not turn on the power supply until all connections are completed. 1) visit the maxim website (www.maxim-ic.com/evkit- software) to download the latest version of the ev kitsoftware, 1587arxx.zip. component lists (continued) designation qty description c19?22 4 1.0? ?0%, 10v x5r ceramiccapacitors (0603) tdk c1608x5r1a105m c24 1 270pf ?%, 50v c0g ceramiccapacitor (0603) tdk c1608c0g1h271j c23, c25 2 330pf ?%, 50v c0g ceramiccapacitors (0603) tdk c1608c0g1h331j d1 1 switching diode (sot323)central semiconductor cmsd4448 j1 1 2 x 10 right-angle femalereceptacle ju1?u7 7 jumpers, 3-pin headers l1 1 3.3?, 2.66a inductortoko a915ay-3r3m designation qty description l2 1 6.8?, 1.51a inductortoko a915ay-6r8m l3 1 10?, 0.85a inductorsumida cdrh2d18/hp-100 toko a960aw-100m r1, r2, r3, r6, r17, r18 0 not installed, resistors (0402) r4, r5, r7?10 0 not installed, resistors (0603) r11, r12, r13 3 1m ?% resistors (0402) r14, r15, r16 3 240k ?% resistors (0402) sw1 1 momentary pushbutton switch(no) u1 1 maxim max1587aetl(40-pin thin qfn) 7 shunts 1 pcb: max1587a evaluation kit 1 software disk (cd-rom)?ax1587a evaluation kit supplier phone fax website central semiconductor 631-435-1110 631-435-1824 www.centralsemi.com sumida usa 847-545-6700 847-545-6720 www.sumida.com tdk corp. 847-803-6100 847-390-4405 www.component.tdk.com toko america 847-297-0070 847-699-1194 www.tokoam.com component suppliers note: indicate that you are using the max1587a when contacting these component suppliers. downloaded from: http:///
2) install the max1587a evaluation software on your computer by running the install.exe program.the program files are copied and icons are created in the windows start menu. 3) on the cmaxqusb board, ensure that the shunt of ju1 is in the 3.3v position. 4) carefully connect the boards by aligning the 20-pin connector of the max1587a ev kit with the 20-pinheader of the cmaxqusb interface board. gently press them together. 5) ensure that a shunt is placed across pins 1-2 of jumpers ju1?u5. 6) ensure that a shunt is placed across pins 2-3 of jumpers ju6 (set default smbus address) and ju7(pulse skipping enabled on vcc_core). do not turn on the power until all connections are made. 7) connect the 4.0v power supply to the pads labeled vin and gnd on the max1587a ev kit board. 8) connect the optional backup battery to the pads labeled bkbt and gnd. 9) connect a voltmeter to the pads labeled vcc_core and gnd. 10) connect the usb cable from the pc to the cmax- qusb board. a building driver database window pops up in addition to a new hardware found mes- sage. if you do not see a window that is similar to theone described above after 30 seconds, remove the usb cable from the cmaxqusb and reconnect it again. administrator privileges are required to install the usb device driver on windows 98se/2000/xp. refer to the troubleshooting_usb.pdf docu- ment included with the software if you have any prob- lems during this step. 11) follow the directions of the add new hardware wizard to install the usb device driver. choose the search for the best driver for your device option. specify the location of the device driver to bec:\program files\max1587a (default installation directory) using the browse button. 12) turn on the dc power supply. 13) start the max1587a ev kit software by opening its icon in the start menu. the gui main window appears, as shown in figure 1. 14) move the core voltage track bar located inside the voltage control box to 1v. 15) verify that the vcc_core voltage on the voltmeter reads approximately 1v. detailed description of software user-interface panel the user interface (shown in figure 1) is easy to operate;use the mouse, or press the tab key to navigate with the arrow keys. each of the buttons corresponds to bits in the command and configuration bytes. by clicking on them, the correct smbus write operation is generated to update the internal registers of the max1587a. the interface box indicates the current device address , and the data sent/received (the max1587a ev kit soft- ware only sends) for the last read/write operation. thisdata is used to confirm proper device operation. note: words in boldface are user-selectable features in the software. evaluates: max1587a max1587a evaluation kit/ evaluation system _______________________________________________________________________________________ 3 figure 1. max1587a ev kit software main window downloaded from: http:///
evaluates: max1587a core voltage control the core voltage (vcc_core) can be adjusted in25mv increments by adjusting the core voltage slider. alternatively, a number can be entered in the boxbelow the core voltage slider. if a number not divisible by 0.025 is entered, the software automatically roundsthe number to the nearest 25mv increment and sends the appropriate data to the max1587a. check the extend checkbox to increase the core volt- age range to 0.7v to 1.475v. simple smbus commands there are two methods for communicating with themax1587a: through the normal user-interface panel or through the smbus commands available by selecting the 2-wire interface diagnostic item from the options pulldown menu. a display pops up that allows thesmbus protocols, such as read byte, write byte, and send byte, to be executed. the smbus dialog boxes accept numeric data in bina-ry, decimal, or hexadecimal form. hexadecimal num- bers should be prefixed by $ or 0x. binary numbers must be exactly eight digits. see figure 2 for an exam- ple of this tool. note: in places where the slave address asks for an 8- bit value, it must be the 7-bit slave address of themax1587a as determined by srad with the last bit set to 1 for a read operation or zero for a write operation. refer to the max1587a data sheet for a complete list of registers and functions. detailed description of hardware the max1587a ev kit is a fully assembled and testedsurface-mount pcb that evaluates the max1587a power-management ic. the max1587a integrates three high-performance, 1mhz, synchronous step- down dc-dc power supplies, two low-dropout regula- tors, and a battery backup supply. max1587a evaluation kit/evaluation system 4 _______________________________________________________________________________________ figure 2. a simple smbussendbyte operation using the included two-wire interface diagnostics. in this example, the software iswriting data (0x13) to device address 0x28. the above data sequence sets the core voltage of the max1587a to 1.175v. downloaded from: http:///
the power outputs consist of a 3.3v at 1.3a i/o(vcc_i/o) step-down output, 2.5v at 900ma memory (vcc_mem) step-down output, a software adjustable 0.7v to 1.475v at 500ma core (vcc_core) step-down output, a 1.3v at 35ma phase-locked loop (vcc_pll) ldo, and a 1.1v at 40ma sram (vcc_sram) ldo. an additional 30ma backup battery (vcc_batt) output is also available. power-management functions include a power-ok (pok) output, a manual-reset input, multiple output- enable inputs, and a reset output. activate the manual reset input by pressing the switch labeled sw1. power sequencing is also available through component placeholders r4, r5, r7, r8, c2, c3, c4, and c5. see the optional power-sequencing circuitry section for more details. address selection jumper ju6 sets the max1587a slave address. thedefault address is 0010 1000 (srad = gnd). see table 1 for a complete list of addresses. sleep mode jumper ju1 controls the sleep function of themax1587a ev kit. removing the shunt from ju1 allows the sleep function to be controlled by an external signal source connected to the slp pad. see table 2 for sleep shunt positions. output enables jumpers ju2?u5 control the on/off state of themax1587a ev kit vcc_i/o, vcc_mem, vcc_core, vcc_pll, and vcc_sram outputs. removing the shunt allows the output enable function to be controlled by an external signal source. see table 3 for output- enable shunt positions. pulse-skipping mode jumper ju7 controls the pulse-skipping mode of thevcc_core output. see table 4 for pulse-skipping shunt positions. adjusting the i/o voltage the i/o (vcc_i/o) output voltage can be adjusted fromits default value of 3.3v. cut the trace at r3 and install a 0 ? resistor at r17 to set the i/o voltage to 3.0v. to set the i/o voltage to an alternative value, cut the traceat r3 and install resistors at r1 and r3. use the equa- tion below to calculate resistor values: where r 3 = 100k ? , vcc_i/o = desired i/o voltage, and v fb1 = 1.25v. adjusting the mem voltage the mem (vcc_mem) output voltage can be adjustedfrom its default value of 2.5v. cut the trace at r6 and install a 0 ? resistor at r18 to set the mem voltage to 1.8v. to set the mem voltage to an alternative value,cut the trace at r6 and install resistors at r2 and r6. use the equation below to calculate resistor values: where r 6 = 100k ? , vcc_mem = desired mem voltage, and v fb2 = 1.25v. rr vcc mem v fb 26 2 1 = ? ? ? ? ? ? ? _ rr vcc i o v fb 13 1 1 = ? ? ? ? ? ? ? _/ evaluates: max1587a max1587a evaluation kit/ evaluation system _______________________________________________________________________________________ 5 max1587a address shunt position max1587a address pin binary hexadecimal 1-2 vin 0010 1010 0x2a 2-3* gnd 0010 1000 0x28 table 1. shunts settings for smbusaddress (ju6) * default configuration: ju6 (2-3) shunt position description 1-2* i/o and mem dc-dc converters enabled 2-3 i/o and mem dc-dc converters disabled;i/o and mem sleep ldos enabled not installed slp function controlled by an external signal source table 2. sleep selection (ju1) * default configuration: ju1 (1-2) downloaded from: http:///
evaluates: max1587a optional power-sequencing circuitry the max1587a ev kit provides extra pads to supportpower sequencing. the directions below describe the implementation of this feature: 1) cut the trace at r4, r5, r7, and r8. to create an rc time delay: 2) install resistors and capacitors at locations r4, r5, r7, r8, c5, c2, c4, and c3. 3) ensure that shunts are installed across pins 1 and 2 of jumpers ju2?u5. calculate component values using the equation below:where: c n = 0.1? v th = 1.1v v in = battery input voltage t = desired startup time using an alternative smbus interface the max1587a ev kit provides pads and pullup resis-tor placeholders that allow an alternative smbus/i 2 c- compatible interface to be used. connect the interfacethrough the scl, sda, and gnd pads. install pullup resistors at positions r9 and r10, if required. r t cln v v n n th in = ? ? ? ? ? ? ? ? 1 max1587a evaluation kit/evaluation system 6 _______________________________________________________________________________________ jumper shunt position description 1-2* vcc_mem output enabled 2-3 vcc_mem output disabled ju2 (on2) not installed on2 controlled by an externalsignal source 1-2* vcc_i/o output enabled 2-3 vcc_i/o output disabled ju3 (on1) not installed on1 controlled by an externalsignal source 1-2* vcc_pll/vcc_sram outputenabled 2-3 vcc_pll/vcc_sram outputdisabled ju4 (on45) not installed on45 controlled by an externalsignal source 1-2* vcc_core output enabled 2-3 vcc_core output disabled ju5 (on3) not installed on3 controlled by an externalsignal source table 3. output enable (ju2?u5) * default configuration: ju2 (1-2), ju3 (1-2), ju4 (1-2), ju5 (1-2) shunt position description 1-2 vcc_core pulse-skipping mode disabled(forced pwm) 2-3* vcc_core pulse-skipping mode enabled table 4. pulse-skipping mode selection(ju7) * default configuration: ju7 (2-3) downloaded from: http:///
evaluates: max1587a max1587a evaluation kit/ evaluation system _______________________________________________________________________________________ 7 j1 vi/o l3 10 h j1-2 scl v7 sda v5 v4 pg3 pv3 fb3 lx3 pv2 fb2 lx2 v2 in45 pv1 fb1 lx1 v1 sda r10 open j1-4j1-6 j1-8 j1-10 j1-12 j1-14 j1-16 j1-18 j1-19 j1-1j1-3 j1-5 j1-7 j1-9 j1-11 j1-13 j1-15 j1-17 j1-20 vi/o r9 open 3 11 25 scl 10 23 26 28 33 27 vcc_core vin vin r6 short r18open l26.8 h c2910 f vcc_mem gnd c1510 f c124.7 f vin pg2 15 vcc_pll c201.0 f scl c19 1.0 f vcc_sram scl sda vcc_batt sda c211.0 f 13 7 14 6 24 r2 open c14 10 f c27 10 f c28 4.7 f vin r3 short r17open l13.3 h c10 4.7 f c11 4.7 f vcc_i/o gnd vin 38 1 37 12 3 4 r1 open c13 10 f c26 10 f vi/o vin slpin in ju1 slp 39 5 16 vin c910 f gnd c1open vin slp 9 pok pok 12 3 ju6 srad 29 vin 12 3 ju7 pwm3 12 ramp 17 vin r131m ? vi/o 30 rso rso r121m ? vi/o 31 21 on2 mr mr r111m ? vin vin on2 sw1 r4 short c5 open 12 3 ju2 34 on3 vin on3 r8 short c4 open 12 3 ju5 22 on45 ref vin on45 r7 short c3 open 12 3 ju4 pg1 36 c161500pf c2 open 12 3 ju3 on1 35 vin r5 short on1 ref c17 0.1 f 40 19 cc1 r14 240k ? 1% c23 330pf c6open 8 cc2 r15 240k ? 1% c24 270pf c7open 32 cc3 20 byp 18 gnd r16 240k ? 1% c25 330pf c8open c18 0.01 f bkbt c22 1.0 f bkbt 2 d1 gnd vin max1587a u1 figure 3. max1587a ev kit schematic downloaded from: http:///
evaluates: max1587a max1587a evaluation kit/evaluation system 8 _______________________________________________________________________________________ figure 4. max1587a ev kit component placement guide?omponent side downloaded from: http:///
evaluates: max1587a max1587a evaluation kit/ evaluation system _______________________________________________________________________________________ 9 figure 5. max1587a ev kit pcb layout?omponent side downloaded from: http:///
evaluates: max1587a max1587a evaluation kit/evaluation system 10 ______________________________________________________________________________________ figure 6. max1587a ev kit pcb layout?nner layer 2 downloaded from: http:///
evaluates: max1587a max1587a evaluation kit/ evaluation system ______________________________________________________________________________________ 11 figure 7. max1587a ev kit pcb layout?nner layer 3 downloaded from: http:///
evaluates: max1587a max1587a evaluation kit/evaluation system 12 ______________________________________________________________________________________ figure 8. max1587a ev kit pcb layout?older side downloaded from: http:///
maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ____________________ 13 2007 maxim integrated products is a registered trademark of maxim integrated products, inc. evaluates: max1587a max1587a evaluation kit/ evaluation system figure 9. max1587a ev kit component placement guide?older side revision history pages changed at rev 1: 1?3 downloaded from: http:///

▲Up To Search▲

Price & Availability of MAX1587AEVCMAXQU

	To Download MAX1587AEVCMAXQU Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .