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evaluate: max1586a max1586a evaluation kit/ evaluation system ________________________________________________________________ maxim integrated products 1 19-3138; rev 1; 1/07 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. part t em p r a n g e i c pa c k a g e smbus interface type max1586aevkit 0? to +70? 48 thi n qfn not included MAX1586AEVCMAXQU 0? to +70? 48 thi n qfn c m ax qu sb+ 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, inc. 847-297-0070 847-699-1194 www.tokoam.com component suppliers ordering information note: the max1586a ev kit software is provided with the max1586aevkit; however, the cmaxqusb+ board is requiredto interface the ev kit to the computer when using the included software. note: indicate that you are using the max1586a when contacting these component suppliers. smbus is a trademark of intel corp.windows is a registered trademark of microsoft corp. general description the max1586a evaluation kit (ev kit) is a fully assembledand tested surface-mount pcb that evaluates the max1586a power-management ic (pmic). the ic is opti- mized for microprocessor-based applications. the max1586a integrates three high-performance synchro- nous step-down dc-dc power supplies, three low- dropout (ldo) regulators, a battery backup supply, and various power-management functions. the max1586a evaluation system (ev system) consists of a max1586a evaluation kit (ev kit) and a companion maxim cmaxqusb board. 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- com patible software provides a professional interface to exercise the features of the max1586a. the program is menu driven and offers a graphical user interface (gui) with control buttons and a status display. the MAX1586AEVCMAXQU includes both the ev kit and the cmaxqusb interface board. order the max1586a ev kit if you already have an smbus interface. features ? 2.6v to 5.5v single-supply operation ? seven-output power supply 3.3v at 1.3a (vcc_i/o)2.5v at 900ma (vcc_mem) 0.7 to 1.475v at 500ma (vcc_core) software adjustable 1.3v at 35ma (vcc_pll) 1.1v at 40ma (vcc_sram) 0 to 3v at 35ma (vcc_usim) software adjustable backup battery supply (30ma) ? 1mhz switching frequency ? on-board manual reset switch ? optional on-board power-sequencing circuitry ? power-ok output ? smbus/i 2 c-compatible 2-wire serial interface ? easy-to-use menu-driven software ? software-controlled core and usim voltageadjustment ? assembled and tested ? include windows 98se/2000/xp-compatiblesoftware ? also evaluate the max1586b ? ev system includes usb connectivity downloaded from: http:///
evaluate: max1586a max1586a evaluation kit/evaluation system 2 _______________________________________________________________________________________ quick start recommended equipment ? 4.5v, 2a dc power supply ? 3.6v backup battery (optional) ? one voltmeter ? max1586a ev system max1586a ev kitmaxim cmaxqusb interface board (usb cable included) ? a user-supplied windows 98se/2000/xp pc with aspare 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 max1586a ev kit is fully assembled and tested.follow the steps below to verify board operation. do not turn on the power supply until all connections are com- pleted: 1) visit the maxim website (www.maxim-ic.com/evkit- software) to download the latest version of the ev kit software, 1586arxx.zip. designation qty description c1?6 0 not installed, capacitors (0603) c7 0 not installed, capacitor (0805) c8, c9, c10 0 not installed, capacitors (0402) c11, c15, c16, c17, c29, c30, c33 7 10? ?0%, 6.3v x5r ceramiccapacitors (0805) tdk c2012x5r0j106m c12, c13, c14, c31, c32 5 4.7? ?0%, 6.3v x5r ceramiccapacitors (0805) tdk c2012x5r0j475m c18 1 1500pf ?0%, 50v x7r ceramiccapacitor (0402) tdk c1005x7r1h152k c19 1 0.1? ?0%, 10v x5r ceramiccapacitor (0402) tdk c1005x5r1a104m c20 1 0.01? ?0%, 25v x7r ceramiccapacitor (0402) tdk c1005x7r1e103m c21?25 5 1.0? ?0%, 10v x5r ceramiccapacitors (0603) tdk c1608x5r1a105m part qty description max1586aevkit 1 max1586a ev kit cmaxqusb+ 1 serial-interface board component lists max1586a ev system designation qty description c26, c28 2 330pf ?%, 50v c0g ceramiccapacitors (0603) tdk c1608c0g1h331j c27 1 270pf ?%, 50v c0g ceramiccapacitor (0603) tdk c1608c0g1h271j d1 1 switching diode (sot323)central semiconductor cmsd4448 j1 1 2 x 10 right-angle female receptacle ju1?u9 9 jumpers, 3-pin headers l1 1 3.3?, 2.66a inductortoko a915ay-3r3m l2 1 6.8?, 1.51a inductortoko a915ay-6r8m l3 1 10?, 0.85a inductorsumida cdrh2d18/hp-100 toko a960aw-100m r1?6, r14, r15 0 not installed, resistors (0603) r7?13, r24, r25 0 not installed, resistors (0402) r16?20 5 1m ? ?% resistors (0402) r21, r22, r23 3 240k ? ?% resistors (0402) sw1 1 momentary pushbutton switch u1 1 max1586aetm (48-pin thin qfn) 9 shunts 1 pcb: max1586a evaluation kit 1 software disk (cd-rom)?ax1586a evaluation kit + denotes lead free and rohs compliance. max1586a ev kit max1586a ev kit (continued) downloaded from: http:///
2) install the max1586a evaluation software on yourcomputer by running the install.exe program inside the temporary folder. the program files are copied and icons are created in the windows start menu. 3) on the cmaxqusb board, ensure that shunt ju1 is in the 3.3v position. 4) carefully connect the boards by aligning themax1586a ev kit? 20-pin connector with the 20- pin header of the cmaxqusb interface board. gently press them together. the two boards should be flush against each other. 5) ensure that a shunt is placed across pins 1-2 ofjumpers ju1?u7. 6) ensure that a shunt is placed across pins 2-3 ofjumpers ju8 and ju9. do not turn on the power until all connections are made. 7) connect the 4.5v power supply to the pads labeled vin and gnd on the max1586a ev kit board. 8) connect the optional backup battery to the padslabeled bkbt and gnd. 9) connect a voltmeter to the pads labeledvcc_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 message if this is the first time this board is con- nected to the pc. if you do not see a window that is similar to the one described above after 30 sec- onds, 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 trou- bleshooting_usb.pdf document included with the software if you have any problems 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\max1586a (default installation directory) by using the browse button. 12) turn on the dc power supply. 13) start the max1586a 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 group 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 (figure 1) is easy to operate; use themouse or press the tab key to navigate with the arrow keys. each button corresponds to bits in the command and configuration bytes. by clicking on them, the cor- rect smbus write operation is generated to update the internal registers of the max1586a. the interface box evaluate: max1586a max1586a evaluation kit/ evaluation system _______________________________________________________________________________________ 3 figure 1. max1586a ev kit software main window downloaded from: http:///
evaluate: max1586a indicates the current device address , the data sent/received (the max1586a ev kit software only sends) for the last read/write operation. this data isused to confirm proper device operation. note: words in boldface are user-selectable features in the software. 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 max1586a. check the extend checkbox to increase the core volt- age range to 0.7v to 1.475v. usim voltage control the usim voltage (vcc_usim) can be adjusted to oneof four preset voltages. adjust the usim voltage slider to select the desired voltage. simple smbus commands there are two methods for communicating with themax1586a: 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. max1586a evaluation kit/evaluation system 4 _______________________________________________________________________________________ figure 2. a simple smbussendbyte operation using the included 2-wire interface diagnostics. in this example, the software is writ- ing data (0x13) to device address 0x28. the above data sequence sets the core voltage of the max1586a to 1.175v. downloaded from: http:///
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 themax1586a as determined by srad with the last bit set to 1 for a read operation or zero for a write. refer to the max1586a data sheet for a complete list of registers and functions. detailed description of hardware the max1586a ev kit is a fully assembled and testedsurface-mount pcb that evaluates the max1586a pmic. the max1586a integrates three high-perfor- mance, 1mhz, synchronous step-down dc-dc power supplies, three low-dropout regulators, and a battery backup supply. the power outputs consist of a 3.3v at 1.3a i/o (vcc_i/o) step-down output, a 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, a 1.1v at 40ma sram (vcc_sram) ldo, and a software-adjustable 0 to 3.0v at 35ma (vcc_usim) 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, a sleep function, and a reset output. activate the manual reset input by pressing the switch labeled sw1. power sequencing is also available through component placeholders r1?6 and c1?6. see the optional power-sequencing circuitry section in the document for more details. address selection jumper ju9 sets the max1586a slave address. thedefault address is 0010 1000 (srad = gnd). see table 1 for a complete list of addresses. sleep mode jumper ju7 controls the sleep function of themax1586a ev kit. removing the shunt from ju7 allows the sleep function to be controlled by an external signal source connected to the slp pad. see table 2 for sleep shunt positions. evaluate: max1586a max1586a evaluation kit/ evaluation system _______________________________________________________________________________________ 5 max1586a address shunt position max1586a address pin binary hexadecimal 1-2 vin 0010 1010 0x2a 2-3* gnd 0010 1000 0x28 table 1. shunt settings for smbusaddress (ju9) * default configuration: ju9 (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 (ju7) * default configuration: ju7 (1-2) downloaded from: http:///
evaluate: max1586a output enables jumpers ju1?u6 control the on/off state of themax1586a ev kit vcc_i/o, vcc_mem, vcc_core, vcc_pll, vcc_sram, and vcc_usim 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 ju8 controls the pulse-skipping mode of thevcc_core output. see table 4 for pulse-skipping mode shunt positions. adjusting the i/o voltage the vcc_i/o (i/o) output voltage can be adjusted fromits default value of 3.3v. cut the trace at r12 and install a 0 ? resistor at r24 to set the i/o voltage to 3.0v. to set the i/o voltage to an alternative value, cut the traceat r12 and install resistors at r10 and r12. use the equation below to calculate resistor values: where: r 12 = 100k ? vcc_i/o = desired i/o voltagev fb1 = 1.25v adjusting the mem voltage the vcc_mem (mem) output voltage can be adjustedfrom its default value of 2.5v. cut the trace at r13 and install a 0 ? resistor at r18 to set the mem voltage to 1.8v. to set the mem voltage to an alternative value, cutthe trace at r13 and install resistors at r11 and r13. use the equation below to calculate resistor values: where: r 13 = 100k ? vcc_mem = desired mem voltagev fb2 = 1.25v rrx vcc mem v fb 11 13 2 1 = ?? ? ?? ? _ rrx vcc i o v fb 10 12 1 1 = ?? ? ?? ? _/ max1586a evaluation kit/evaluation system 6 _______________________________________________________________________________________ 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(ju8) * default configuration: ju8 (2-3) jumper shunt position description 1-2* vcc_i/o output enabled. 2-3 vcc_i/o output disabled. ju1 (on1) not installed on1 controlled by an external signalsource. 1-2* vcc_mem output enabled. 2-3 vcc_mem output disabled. ju2 (on2) not installed on2 controlled by an external signalsource. 1-2* vcc_core output enabled. 2-3 vcc_core output disabled. ju3 (on3) not installed on3 controlled by an external signalsource. 1-2* vcc_pll output enabled. 2-3 vcc_pll output disabled. ju4 (on4) not installed on4 controlled by an external signalsource. 1-2* vcc_sram output enabled. 2-3 vcc_sram output disabled. ju5 (on5) not installed on5 controlled by an external signalsource. 1-2* vcc_usim output enabled. 2-3 vcc_usim output disabled. ju6 (on6) not installed on6 controlled by an external signalsource. table 3. output enable (ju1?u6) * default configuration: ju1 (1-2), ju2 (1-2), ju3 (1-2), ju4 (1-2), ju5 (1-2), ju6 (1-2) downloaded from: http:///
low-battery detection the max1586a is capable of monitoring the main bat-tery input voltage and activating outputs when the volt- age falls below a given threshold. the default ev kit configuration triggers the low-battery output when the input voltage falls below 3.6v. the dead-battery output is triggered when the input voltage falls below 3.2v. monitor the outputs at the lbo and dbo pads. to alter the ev kit defaults, cut the trace at r7 and r8and install resistors at locations r7, r8, and r9. use the following equations to calculate resistor values: where: lbi = 1.0vdbi = 1.232v v inl = desired low-battery detection voltage v ind = desired dead-battery detection voltage r 9 = 100k ? note: the following conditions must be met: v inl lbi (1.0v) v ind dbi (1.232v) optional power-sequencing circuitry the max1586a ev kit provides extra pads to supportpower sequencing. the directions below describe the implementation of this feature. 1) cut the trace at r1?6. 2) to create an rc time delay: install resistors and capacitors at locations r1?6and c1?6. 3) ensure that shunts are installed across pins 1 and 2 of jumpers ju1?u6. 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 max1586a 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 r14 and r15 if required. evaluating the max1586b to evaluate the max1586b, replace ic u1 with amax1586betm. r t cxin v v n n th in = ?? ? ?? ? 1 rrx v lbi r inl 79 8 1 = ?? ? ?? ? r dbi lbi x v v xr inl ind 8 1 9 = ?? ? ?? ? evaluate: max1586a max1586a evaluation kit/ evaluation system _______________________________________________________________________________________ 7 downloaded from: http:///
evaluate: max1586a max1586a evaluation kit/evaluation system 8 _______________________________________________________________________________________ j1 vi/o gnd l3 10 h j1-2 scl bkbt v7 sda scl ramp v6 v5 v4 pg3 pv3 fb3 lx3 pg2 pv2 fb2 lx2 v2 in45 pg1 pv1 fb1 lx1 v1 in6 sda r15 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 r14 open 4 5 13 12 20 41 29 27 31 33 39 32 vcc_core vin vin r13 short r25open l26.8 h c3310 f vcc_mem gnd c1710 f c144.7 f vin vcc_pll c231.0 f vcc_usim c211.0 f scl c181500pf c22 1.0 f vcc_sram scl sda vcc_batt bkbt vin d1 gnd sda c241.0 f c251.0 f 18 16 9 17 8 28 r11 open c16 10 f c30 10 f c32 4.7 f vin r12 short r24open l13.3 h c12 4.7 f c13 4.7 f vcc_i/o gnd vin 43 45 3 44 6 12 3 42 r10 open c15 10 f c29 10 f c31 4.7 f vi/o vin dbi slpin in ju7 48 lbi 1 slp 47 7 19 vin c11 10 f r7 short r8 short r9 open gnd c7 open vin slp 15 lbo lbo 12 3 ju8 pwm3 14 vin 12 3 ju9 srad 35 vin r20 1m ? vi/o 24 dbo dbo r191m ? vi/o 11 pok pok r18 1m ? vi/o 36 rso rso r171m ? vi/o 37 46 on1 mr mr r16 1m ? vin vin on1 sw1 r1 short c1 open 12 3 ju1 25 on2 vin on2 r2 short c2 open 12 3 ju2 34 on3 vin on3 r3 short c3 open 12 3 ju3 26 on4 vin on4 r4 short c4 open 12 3 ju4 30 on5 vin on5 r5 short c5 open 12 3 ju5 40 on6 22 ref 2 cc1 vin on6 r6 short r21 240k ? 1% c26 330pf c6 open 12 3 ju6 ref c19 0.1 f c8open 38 cc3 23 byp 21 gnd r23 240k ? 1% c28 330pf c10open c200.01 f 10 cc2 r22 240k ? 1% c27 270pf c9open max1586a u1 figure 3. max1586a ev kit schematic downloaded from: http:///
evaluate: max1586a max1586a evaluation kit/ evaluation system _______________________________________________________________________________________ 9 figure 4. max1586a ev kit component placement guide?omponent side downloaded from: http:///
evaluate: max1586a max1586a evaluation kit/evaluation system 10 ______________________________________________________________________________________ figure 5. max1586a ev kit pcb layout?omponent side downloaded from: http:///
evaluate: max1586a max1586a evaluation kit/ evaluation system ______________________________________________________________________________________ 11 figure 6. max1586a ev kit pcb layout?nner layer 2 downloaded from: http:///
evaluate: max1586a max1586a evaluation kit/evaluation system 12 ______________________________________________________________________________________ figure 7. max1586a ev kit pcb layout?nner layer 3 downloaded from: http:///
evaluate: max1586a max1586a evaluation kit/ evaluation system ______________________________________________________________________________________ 13 figure 8. max1586a ev kit pcb layout?older side downloaded from: http:///
evaluate: max1586a max1586a evaluation kit/evaluation system 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. 14 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2007 maxim integrated products is a registered trademark of maxim integrated products, inc. figure 9. max1586a ev kit component placement guide?older side revision history pages changed at rev 1: 1?, 7, 10?4 downloaded from: http:///

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