Evaluates: MAX MAX20743 Evaluation Kit. General Description. Quick Start. Features. Required Equipment. Optional Equipment.

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1 MAX07 Evaluation Kit Evaluates: MAX07 General Description The MAX07 Evaluation Kit (EV kit) serves as a reference platform for evaluating the MAX07 voltage regulator IC. This single-chip, integrated switching regulator provides an extremely compact, low-cost, highly efficient, fast, accurate, and reliable power-delivery solution for emerging low output-voltage applications up to A. Refer to the MAX07 IC data sheet for more information. The EV kit consists of a fully assembled and tested PCB implementation of the MAX07. Jumper pins, test points, and input/output connectors are included for flexibility and ease of use in a wide range of applications. The evaluation board is configured with an edge strip to allow high di/dt loading when evaluating the system. The +V OUT connection is on the top side, while the return (or -V OUT ) is on the bottom side, directly mirroring the topside strip. Either solder directly to the output strip or use the J8 terminal block to interface to a load. Features High Efficiency and Power Density Low Component Count Small Solution Size 09mm Including Inductor and Output Capacitors Optimized Performance Reduced Design-In Time Interfaces to Maxim PMBus Dongle and PowerTool GUI Proven PCB Layout Fully Assembled and Tested Quick Start Required Equipment MAX07 EV kit.v to V power supply 0A to A Load Oscilloscope, probes, voltmeter Optional Equipment MAXPOWERTOOL00# USB-to-PMBus interface dongle Maxim PowerTool software Procedure The EV kit is fully assembled and tested. Follow the steps below to verify board operation: ) Connect a powered-off.v to V input supply to J. Optionally, connect supply sense leads to V DD and GND for best accuracy. ) Connect load to J or J8. ) If Maxim PowerTool software is used, connect the MAXPOWERTOOL00# USB-to-PMBus interface dongle to J70 and to the USB port on your PC. ) Connect V OUT scope probe/voltmeter to J or J, if desired. J and J are connected to the sense point for best accuracy. ) Position the SW toggle switch, pointing away from J to enable the IC (if desired). ) Turn on the power supply set to V and observe that V OUT = V. 7) For efficiency measurements, J has the appropriate Kelvin sense points. Ordering Information appears at end of data sheet. PMBus is a trademark of SMIF, Inc. PowerTool is a trademark of Maxim Integrated Products, Inc. 9-77; Rev 0; 7/

2 MAX07 Evaluation Kit Evaluates: MAX07 Operation The MAX07 IC is a monolithic, high-frequency stepdown switching regulator optimized for applications requiring small size, high efficiency and low outputvoltages. Detailed product and application information is provided in the MAX07 IC data sheet. Output Enable (OE) OE is used to enable/disable the output voltage. The output voltage is enabled/disabled by SW. Pointing SW in the direction of the silkscreened arrow enables the regulator. Output-Voltage Selection The MAX07 EV kit is set up to initially boot up to an output voltage of V. This has been accomplished by setting the reference to come up to a V BOOT of 0.V and placing a voltage-divider in the feedback path with a divide ratio of 0.. The reference voltage can be changed through PMBus, in which case the output voltage follows the reference voltage divided by the 0. divide ratio. To achieve higher output voltages, a higher divide ratio can be used. Note that the PMBus commanded and reported V OUT is actually the voltage at the sense pins, so with the feedback divider in place, the divide ratio must be taken into account. R GAIN and C OUT can also be changed to affect performance. Refer to the MAX07 IC data sheet for more details. Soft-Start and Switching Frequency These are programmable parameters. For the EV kit, soft start is set to ms and switching frequency is set to 00kHz. Status Monitoring Whenever the part is actively regulating, and the output voltage is within the power-good window, the STAT pin is high. In all other conditions, including enabled but in a fault state, the STAT pin is pulled low. Refer to the MAX07 IC data sheet for more details. Input-Voltage Monitoring The V DD and GND sense points monitor the input supply. Switching-Voltage Monitoring The switching waveform can be monitored on VX. Output-Voltage Monitoring J- and J- monitor the output voltage of V OUT and GND, respectively. These test points should not be used for loading. Alternatively, scope jack J can be used to monitor the output voltage. Efficiency Testing J provides convenient access to the appropriate V IN and V OUT sense points. VIN_EFF± are on J pins -. VOUT_EFF± are on J pins -. Input and output currents should be measured with 0.% lab shunts. For increased accuracy, shunt mismatch can be measured and calibrated out by doing a test, running the same current through both shunts. Ordering Information PART MAX07EVKIT# TYPE EV Kit #Denotes RoHS compliant. Maxim Integrated

3 MAX07 Evaluation Kit Evaluates: MAX07 MAX07 Bill of Materials Part Reference Quantity Description C, C7, C7 00uF, V, 0%, TANTALUM C 0.0uF, V, 0%, X7R C8, C9 70uF,., 0%, SP-CAP C 0.uF, V, 0%, X7R C 000pF, 0V, 0%, X7R C, C, C0, C 7uF, V, 0%, C0, C.0uF, V, 0%, C, C, C7, C7, C7, C77 00uf,.V, 0%, C7 uf, V, 0%, X7R C8 0.uF, V, 0%, X7R C9, C, C 0uF,.V, 0%, GND, GND, GND, LOOP, VDD, VX _PIN-X Straight J, J8 _PIN- Pin, Terminal Block w/screws, Blue J Shielded Scope Probe Jack, Vertical J _Pin-Edge Fingers for Eval/Load board w/ NO SENSE FINGERS J VOUT-DIF-X Straight J 8_PIN-X Straight J7 _PIN-X Straight J70 _PIN-BoxHeader x8 L 70nH, 0%, Isat= A R.78KΩ, %, /W R0, R0, R, R, R KΩ, %, /W R, R 0Ω, %, /W R KΩ, %, /W R 0Ω, %, /W R, R8 0KΩ, %, /W R.87KΩ, %, /W R9.8KΩ, %, /W SW DPDT-DPDT, pins, switch U MAX07-Maxim POL PCB# Maxim Integrated

4 MAX07 Evaluation Kit Evaluates: MAX07 VDDH GND_POWER,.V, PGMA PGMB, SMALERT, STAT OE DATA CLK VOUT C9 0uF VCC R 0K STAT R8 0K OE C 000pF.V R PGMA PGMB PMBus Addr = b Tss = ms Vboot = 0.8V Rgain = 0.9m-ohm Valley OCP = A Fsw = 00kHz C 7uF 0 R0 C8 K 0.uF X7R BST L PGMA VX PGMA VX 7 SMALERT 70nH C7 SMALERT R PGMB MAX07 PGMB STAT SENSE_VOUT STAT OE DATA DATA VSENSE+ VSENSE+ VSENSE- C9 R.87K CLK CLK VSENSE- SMALERT Diff Pair C C8 VX VOUT Combo footprint to fit L or L MTG TIM Diff Pair J VOUT-DIF R 0 VDDH + C7 + C7 + C7 + C7 00uF 00uF C C 00uf 0 0 C 0.0uF C7 00uf C0 0 0 Top-Side Caps C7 C 0 0 C9 C C8 0 0 SNS C77 00uf C70 C9 0 0 C0 C Bottom-Side Caps Vin Sense+ Vin Supply Vin Sense- VOUT C C L Location VOUT C C C0 + C8 70uF C 0.uF X7R C7 uf X7R 00 C 7uF 0 C0 7uF 0 C 7uF 0 U BST HS + C C 00uf 0 0 C C7 00uf C0 C AGND GND VCC VCC 0 VDDH VDDH R K C GND OE R C C 9 8 L LOOP R 0 C C7 00uf C8 + C9 70uF R.78K C C C 0uF 0uF R 0 R9.8K R MTG + C 00uF C7 C C8 C7 C9 C C C VDD J GND C C C MAX07 Schematics VX Maxim Integrated

5 MAX07 Evaluation Kit Evaluates: MAX07 MAX07 Schematics (continued) VDDH GND_POWER,.V, PGMA PGMB, SMALERT, STAT OE DATA, CLK, VOUT VIN_EFF- VOUT_EFF- VDDH VIN_EFF+ VIN_EFF- Efficiency Test Enable Vboot Restore GND J J7 VIN_EFF+ OE VOUT_EFF+ STAT PGMA PGMB SMALERT PGMB, OE C X7R 00 VB LP99AIM-./NOPB U SW VDDH.V VOUT GND +VOUT J _Pin VOUT VOUT_EFF+ C.0uF V R VOUT_EFF GND Vin R0 K C0.0uF V R K SW SW R C8 X7R ON/OFF BYPASS Vout SCOPE_PROBE_JACK J + C R K K C7 J8 J9 Maxim Integrated

6 MAX07 Evaluation Kit Evaluates: MAX07 MAX07 Schematics (continued) PGD PGC SWI VUSB MCLR ALERT VUSB R70 MAXPOWERTOOL00# J70 USB.V, R7 R7 ALERT SMALERT, R7 Do Not DNS Stuff SWI PGMB, J70 Serial CLK DATA GND_POWER, J70 GND Programming PGC PGD MCLR VUSB R Data IN X700 C R700 R70 C700 D700 U700 MCLR/Vpp/RE RA0/AN0 RA/AN RA/AN/Vref-/CVref RA/AN/Vref+ RA/T0CKI/COUT/RCV RA/AN/SS/HLVDIN/COUT Vss OSC/CLKI OSC/CLKO/RA RC0/TOSO/TCKI RC/TOSI/CCP()/UOE RC/CCP Vusb RB7/KBI/PGD 8 RB/KBI/PGC 7 RB/KBI/PGM RB/AN/KBI0 RB/AN9/CCP()/VPO RB/AN8/INT/VMO RB/AN0/INT/SCK/SCL RB0/AN/INT0/FLT0/SDI/SDA 0 Vdd 9 Vss RC7/RX/DT/SDO 8 7 RC/TX/CK RC/D+/VP RC/D-/VM R70 R70 R7 R7 R7 R70 C70 C70 C70 R709 R707 R70 D70 MTG MTG MTG MTG CABLE USB pin R70 R79 C70 C70 J70 _PIN R708 C CLK DATA 7 9 Maxim Integrated

7 MAX07 Evaluation Kit Evaluates: MAX07 MAX07 PCB Layout Top Silkscreen Bottom Silkscreen Maxim Integrated 7

8 MAX07 Evaluation Kit Evaluates: MAX07 MAX07 PCB Layout (continued) Layer Layer Maxim Integrated 8

9 MAX07 Evaluation Kit Evaluates: MAX07 MAX07 PCB Layout (continued) Layer Layer Maxim Integrated 9

10 MAX07 Evaluation Kit Evaluates: MAX07 Revision History REVISION NUMBER REVISION DATE DESCRIPTION PAGES CHANGED 0 7/ Initial release For pricing, delivery, and ordering information, please contact Maxim Direct at , or visit Maxim Integrated s website at. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. 0 Maxim Integrated Products, Inc. 0

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