User Guide Digital DC-DC Evaluation Board MDC-AN-63 08 July 2014 Digital DC-DC Evaluation Board User Guide Introduction Users can easily connect the input source and loads to evaluate and configure Murata Power Solution Digital DC-DC quarter-brick or eighth-brick modules for the system’s electrical performance that takes after their target application (figure 1). Together with the GUI software, the evaluation board, and USB to PMBus interface makes it possible to access each module from a PC. During initialization, the software scans the PMBus to read which modules are present and list them in its top panel, together with their addresses and major set-up parameters. The evaluation board monitors up to two devices. Figure 1. Typical Setup Equipment Required Digital power evaluation board (see figure 1). 0 - 130 volts, DC @ 0-20 Ampere power supply, the input source should be sized for the maximum power required by the converter(s). 2 or 4 channel, 100MHz oscilloscope (monitor Vin, Vout) optional. 4 ½ digit multimeters (monitor Vin, Vout, Iout) optional. Electronic load or resistive load; the load should be sized for the maximum power produced by the converter(s) Current shunt (100A, 100mV) for output current test, current shunt (20A, 50mV) for input current test Optional . MPS-AD001 USB Interface Adapter MPS Power Brick GUI 1.0 software. Digital DC-DC quarter-brick or eighth-brick modules www.murata-ps.com/support 08 July 2014 MDC-AN-63 Page 2 of 6 Digital DC-DC Evaluation Board User Guide Board Description and Key Connections Connects to MPS I2C Interface Adapter UUT1 On/Off Enable Control Vout+ Vin+ DC Source Output DC Load Vout– Vin– Figure 2. Key Connections UUT2 On/Off Enable Control Setting Up a Digital Power Evaluation Board Connect a wire from the negative (-) terminal of input source to Vin- of the evaluation board. Connect a wire from the negative (+) terminal of input source to Vin+ of the evaluation board. Connect a wire from the negative (-) terminal of electronic load (or the other terminal of a resistive load) to Vout- of the evaluation board. Connect a wire from the negative (+) terminal of electronic load (or the other terminal of a resistive load) to Vout+ of the evaluation board. Connect the I2C USB adapter to the evaluation board as shown in figure 1. www.murata-ps.com/support 08 July 2014 MDC-AN-63 Page 3 of 6 Digital DC-DC Evaluation Board User Guide Other Board Features 1: Primary On/Off Control (see figure 3) J2 This switch can disable/Enable the UUT1 and UUT2 (J1 and J3 are closed). This switch can disable/Enable the UUT1 (J2 is closed). This switch can disable/Enable the UUT2 (J2 is closed). J1 J3 UUT1 J1 UUT2 J3 Fuse J2 Figure 3. J1, J2, J3 Switches 2: Secondary On/Off Control (see figure 4) S1-1 S1-2 S1-3 S1-4 This switch can disable/Enable the UUT1 and UUT2 per Secondary On/Off control pin (S1-2 or S1-3 is closed). This switch can disable/Enable the UUT2 (S1-1, J1, J2 and J3 is opened). This switch can disable/Enable the UUT1 (S1-1, J1, J2 and J3 is opened). None Figure 4. S1 Switch Power-Up Instructions for Digital DC-DC Quarter-Brick or Eighth-Brick Modules 1. Mount the model(s) into evaluation board and then check the Vin source and load are connect well. 2. For negative logic models, make sure enable switches are in the On position and for positive logic models, make sure enable switches are the Off position. Note: In parallel model (2 units are mounted on the evaluation board), please make sure the J1, J3 are closed and the J2 is opened and also the Secondary On/Off control switch are need to turned Off before turn on the input source. 3. Turn on the input source (36-75V supply). 4. Turn enable switch J1 or J3 (J2 is closed) for device you wish to monitor or configure. Note: In parallel model (2 units are mounted on the evaluation board), turn on the J2 (J1 and J3 are closed) to enable the UUT and UUT2. 5. Connect the USB Interface Adapter to evaluation board. 6. Start MPS Power Brick GUI Software. Power-Down Instructions Digital DC-DC Quarter-Brick or Eighth-Brick Modules 1. 2. 3. Turn off the input source. Stop the MPS Power Brick GUI Software. Remove the unit(s) from the evaluation board. www.murata-ps.com/support 08 July 2014 MDC-AN-63 Page 4 of 6 Digital DC-DC Evaluation Board User Guide Positioning of the Address Resistors The table below displays the recommended resistor values to assign to the module address. See DBQ or DBE series data sheet for more details. If the calculated PMBus address is 0d, 11d, or 12d, SA0 or SA1 is left open; default PMBus address of 120d is assigned instead. The SA0 and SA1 value VS resistor connected to GND. (SA0, SA1 index) 0 1 2 3 4 5 6 7 Resistor Value [kΩ] 10 22 33 47 68 100 150 220 Figure 5. Position of Address Resistors for Modules www.murata-ps.com/support 08 July 2014 MDC-AN-63 Page 5 of 6 green VIN+ R11 20K 1% 0603 1 TESTPOINT TP12 1 TESTPOINT TP11 F5_1 S_3.3V_AUX R5 10K 1% 0603 RED 1 B E2 C3 CTRL/CS_2 CTRL/CS_1 F5_2 F5_1 VOUT+ TEST POINT PRI_EN2 R6 1 TESTPOINT TP10 PRI_EN1 1K 1% 0603 1 TESTPOINT TP9 VIN+ MMBT3904 Q1 D2 F5_2 S_3.3V_AUX R7 10K 1% 0603 1 TP7 TESTPOINT 1 TP6 TESTPOINT 1 TP5 TESTPOINT 1 TP4 TESTPOINT 1 TP3 TESTPOINT 1 TP2 TESTPOINT 1 TP1 TESTPOINT C3 DATA CLOCK ALERT CAPACITOR RED 1 B CAPACITOR 220uF/100V E2 C3 PRI_EN2 MMBT3904 Q2 ALERT VOUT+ 10K 1% 0603 R12 BNC BNC2 BNC BNC1 1 B E2 C3 BNC 5 4 3 2 1 5 4 3 2 1 GREEN VIN+ LED S_3.3V_AUX 1 TP15 TESTPOINT 1 TP14 TESTPOINT 1 TP13 TESTPOINT J1-1 J2-1 J4-1 J1-2 VIN+ C4 J2-2 PRI_EN1 D3 220uF/100V R8 1 TESTPOINT TP8 D1 R13 1K 1% 0603 ISO 9001 and 14001 REGISTERED MMBT3904 Q4 D5 Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. 1K 1% 0603 J4-2 VOUT+ 9 7 5 3 1 1 2 F1 FUSE2 20A FUSE3 1 47K R1 100K 1% 0603 R3 0603 2 2 1 2 1 2 1 2 1 47K R2 100K 1% 0603 R4 0603 VIN+ VOUT+ CTRL/CS_1 F5_1 CTRL/CS_2 ALERT DATA F5_2 CLOCK VOUT+ PRI_EN2 PRI_EN1 2 0 2 0 2 0 0 1 2 J2 0 1 2 J1 0 1 2 J3 1 1 1 J7 J6 J9 J8 CTRL/CS_2 INPUT/OUTPUT SOCKETS J4 10 8 6 4 2 J5-1 J6-1 J5 J3-1 J3-2 J6-2 J5-2 VOUT+ DATA 1 2 3 4 J38 J37 J36 J35 J34 1UF 1210 C2 J43 J42 J41 J40 J39 8 7 6 5 S_3.3V_AUX CLOCK SWITCH CTRL/CS_1 PMBUS SOCKET C1 7343 10UF SW-DIP4 S1 ALERT + Digital DC-DC Evaluation Board User Guide Figure 6. Evaluation Board Schematic This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2014 Murata Power Solutions, Inc. www.murata-ps.com/support 08 July 2014 MDC-AN-63 Page 6 of 6