Evaluates: MAX16050/MAX16051 19-4199 Rev 0 7/08 MAX16050 Evaluation Kit General Description Features The MAX16050 evaluation kit (EV kit) is a complete, fully Quick Demo Mode Evaluation Without DC-DC assembled and tested multivoltage sequencer circuit that Converters demonstrates the capability of the 4-channel MAX16050 Monitors and Sequences Up to Nine DC-DC and 5-channel MAX16051 sequencing ICs. The MAX16050 EV kit monitors up to nine DC-DC converter Converter Outputs outputs and ensures proper power-up and power-down Reverse-Sequencing Operation conditions for systems requiring voltage sequencing. Configurable Sequencing Order (MAX16050 Only) The EV kit features RESET output signals to indicate an undervoltage condition, or when SHDN or FAULT sig- Daisy-Chaining Operation of the MAX16050 and nals are pulled low. Additionally, dedicated OV OUT MAX16051 outputs indicate an overvoltage fault when any of the Overvoltage and Power-Good Monitoring EV kits inputs go above the overvoltage threshold. The EV kit is capable of evaluating the MAX16050 and Fully Assembled and Tested MAX16051 individually. The EV kit can be configured for daisy chaining these two devices together, which enables the user to sequence and monitor up to nine Ordering Information voltages across both devices. The MAX16050 EV kit PART TYPE also provides PCB pads for low-current MOSFETs that are controlled using the MAX16050 and MAX16051 MAX16050EVKIT+ EV Kit charge-pump outputs. +Denotes lead-free and RoHS compliant. The MAX16050 EV kit utilizes two power supplies, one for each IC. Each power supply can range from 2.7V to 13.2V, allowing the user to operate directly from an intermediate bus voltage. The MAX16050 EV kit also requires an additional 2.2V to 5.5V power supply for the pullup resistors open-drain logic outputs. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION Not installed, ceramic capacitors 2200pF 5%, 50V C0G ceramic C1, C2, C12 0 (1206) C11, C21 2 capacitors (0805) Murata GRM2165C1H222J Not installed, ceramic capacitors C3, C13 0 GND (3) 3 PC large black test points (0805) GND (2) 2 PC mini black test points 0.1F 10%, 25V X7R ceramic J1 1 2 x 16 header C4, C15 2 capacitors (0805) Murata GRM21BR71E104K J2 1 2 x 20 header J3J6 4 2-pin headers 1F 10%, 25V X7R ceramic JU1JU7, JU10, C5, C14 2 capacitors (0805) 11 3-pin headers JU11, JU12, JU15 Murata GRM21BR71E105K JU8, JU9, JU13, 0.01F 10%, 25V X7R ceramic 4 2-pin headers C6C9, C16-C19, JU14 9 capacitors (0805) C22 Not installed, n-channel Murata GRM21BR71E103K N1, N2 0 MOSFETs (3 SOT23) 1200pF 5%, 50V C0G ceramic C10, C20 2 capacitors (0805) Murata GRM2195C1H122J Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX16050 Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION OUTPUT1, R35 1 20.5k 1% resistor (0805) OUTPUT2, SW1 1 4-position DIP switch U1 CP OUT, SW2 1 10-position DIP switch U1 EN, U1 VCC, U2 VCC, U1 OV OUT, 3 PC large red test points U1 REM, VPULLUP 12 PC mini red test points U1 RESET, 4-channel voltage sequencer U2 CP OUT, (28 TQFN-EP*) U1 1 U2 EN, Maxim MAX16050ETI+ U2 OV OUT, U2 REM, 5-channel voltage sequencer U2 RESET U2 1 (28 TQFN-EP*) Maxim MAX16051ETI+ R1, R12, R20, R32 4 86.6k 1% resistors (0805) R2, R4, R10, R13, 32 Shunts (J1, J2, JU1JU15) R22, R24, R30, 9 16.5k 1% resistors (0805) 1 PCB: MAX16050 Evaluation Kit+ R33, R36 *EP = Exposed pad. R3, R23 2 30.1k 1% resistors (0805) R5, R11, R14, R25, Component Suppliers 7 10k 1% resistors (0805) R31, R34, R37 SUPPLIER PHONE WEBSITE R6, R26 2 634k 1% resistors (0805) R7, R27 2 261k 1% resistors (0805) Murata Electronics R8, R28 2 698k 1% resistors (0805) 770-436-1300 w w w .mur ata-nor th am er i ca.com N or th R9, R29 2 61.9k 1% resistors (0805) Amer i ca, Inc. Not installed, resistorsshort R15, R21 0 Note: Indicate that you are using the MAX16050 or MAX16051 (0805) when contacting these component suppliers. R16R19, 8 10k 5% resistor (0805) R38R41 3) Connect the positive terminal of the 3.5V power supply to the U1 VCC and U2 VCC test points. Quick Start Connect the ground terminal of this power supply to Required Equipment the respective GND test points. Before beginning, the following equipment is needed: 4) Connect the positive terminal of a 5V power supply to the VPULLUP test point. Connect the ground ter- MAX16050 EV kit minal of this power supply to the GND test point. DC power supplies: 3.5V/100mA, 5V/50mA 5) Connect oscilloscope channels 1 and 2 to the 2-channel oscilloscope U1 RESET and U2 RESET test points, respectively. Connect the ground leads to the nearby black GND Procedure test points. The MAX16050 EV kit is a fully assembled and tested surface-mount board. Follow the steps below to verify 6) Turn on the VCC power supply and adjust the volt- board operation. Caution: Do not turn on the power age to 3.5V. supplies until all connections are completed. 7) Turn on the VPULLUP power supply and adjust the 1) Verify that headers J1 and J2 and jumpers voltage to 5V. JU1JU14 are configured for demo mode configu- 8) Verify that both U1 RESET and U2 RESET signals ration (see Table 1). are high. 2) Verify that switches SW1 and SW2 are set to the off 9) The EV kit is ready for further testing. position. 2 Evaluates: MAX16050/MAX16051