Features Evaluation Module * Evaluation platform for RPX-1.0 buck regulator module * Thermal design considerations included * EMI class B filter * Easy evaluation of output voltage selection, control, and sensing functions Evaluation Module RPX-1.0-EVM-1 Description The RPX-1.0-EVM-1 generates a constant output voltage selectable from 0.8V, 1.8V, 3.3V, 5V, 12V, 15V, or 24V from a DC input in the range of 4-36V. It has a maximum continuous output current of 1A. All the functions of the RPX-1.0 such as output voltage selection, control, power good, trim, and output sense can be readily evaluated. Also the behavior in overload or over-temperature can be evaluated easily before it is designed in. The evaluation board also contains the filter components to meet EMC class B levels. Alternate component positions are included to allow experimentation to optimize the EMC performance depending on operating conditions and budget. Selection Guide Part Number Input Voltage Range [VDC] 4 - 36 RPX-1.0-EVM-1 Output Voltage (1) [VDC] 0.8, 1.8, 3.3, 5, 12, 15, 24 Output Current max. [A] 1 Notes: Note1: refer to SAFE OPERATING AREA of RPX-1.0 datasheet Quick Start Guide 1. Connect P3 to power supply (observe correct polarity!) 2. Connect P4 to the load (no load operation is allowed. For 0.8Vout, please refer to safe operating area in the RPX-1.0 datasheet) 3. The evaluation module is preset to 5Vout. The output voltage can be selected with values of 0.8V, 1.8V, 3.3V, 5V, 12V, 15V, and 24V by shorting a 0W resistor to the respective places as seen in the board silkscreen. For 0.8Vout, please refer to safe operating area in the RPX-1.0 datasheet. 4. The sense pin is connected to the RPX output pin, so the preset voltage is very accurate at the output of the RPX. To compensate any losses of the filter, remove the resistor at R2, and solder a 0W resistor at R3. 5. CTRL The device is preset as normally on. It can be disabled by pulling the CTRL pad to GND. Short R18 to disable the device. Caution: ESD sensitive. Always follow ESD preventative procedures when handling the product! www.recom-power.com REV.: 0/2020 P-1 RPX-1.0-EVM-1 Evaluation Module Specifications (measured @ Ta= 25C, full load and after warm-up unless otherwise stated) Component Placement RPX-1.0-EVM-1 FOR EVALUATION ONLY www.recom-power.com/eval-ref-boards 11 1 C7 1 C3 C4 C5 4 R1 5 P2 1 R11 R10 R9 R8 R7 R6 R5 C12 6 R18 1 2 R4 VOUT 1A max. L7 L8 L9 24V 15V 12V 5V 3.3V 1.8V 0.8V 3 GND C11 R20 2 C10 P4 U1 L2 L3 L4 L5 L6 VIN 4V to 36V 2 C9 C6 2 L1 C8 R22 7R21 2 10 R3 C1 C2 P3 GND R2 P1 1 VOUT SELECT SENSE 9 8 PGOOD VIN CTRL GND TRIM SENSE Connector Description P3 P1 (Not Mounted) Pin Name 1 NC 2 NC Description Pin Name No Connection 1 GND Common GND No Connection 2 VIN Positive Input Voltage (observe correct polarity!) Pin Name GND Common GND VOUT Positive Output Voltage P4 P2 (Not Mounted) Pin Name Description Description 1 NC No Connection 1 2 NC No Connection 2 Description Pads Direct Connection www.recom-power.com Pin Name 1 GND Description Negative Input Voltage (GND) 2 VIN Positive Input Voltage 3 PGOOD 4 VIN 5 CTRL CTRL Pad (leave open if not used) 6 GND Negative Input Voltage (GND) 7 TRIM TRIM Pad (leave open if not used) 8, 9 SENSE Output Voltage Sense Pin (leave open if not used) 10 VOUT Positive Output Voltage 11 GND Negative Output Voltage (GND) Power Good Signal Positive Input Voltage REV.: 0/2020 P-2 RPX-1.0-EVM-1 Evaluation Module Specifications (measured @ Ta= 25C, full load and after warm-up unless otherwise stated) Schematic L6 2220 L5 1206 L9 2220 L4 0805 L8 1206 L2 1008 VIN P3 2 1 L1 C1 RPX-1.0 C2 VOUT 16 C3 C4 C5 C6 13 C8 C9 C10 C11 2 1 R3 6, 7, 8 12 2 GND P4 GND 9, 10, 11 4 R18 R4 GND PGOOD C7 R2 R1 CTRL GND L7 0805 U1 L3 RLS-397 SENSE C12 1 R5 R20 3 R6 5 R7 R8 R9 R10 14, 15 R11 TRIM Vout Select 24V 15V 12V GND 5V 3.3V 1.8V SENSE 0.8V GND Notes: Note2: Gray colored components are not mounted Description U1: RPX-1.0 power module. C1,C2,L1,L2,L3,L4,L5,L6,C3,C4,C5,C6: allow placement of various sized components to test input filter design. The populated filter is designed to meet EN55022 class B. C7,C8,C9,C10,L7,L8,L9,C11: allow placement of various sized components to test output filter design. The populated filter is designed to meet EN55022 class B. R1 and R18: configure CTRL. R1 is populated to enable the RPX-1.0. Short R18 in order to disable the RPX-1.0. R2: populated 0W resistor for direct output voltage measurement. If sense is desired at a different location, for example after the filter or directly at the load, unsolder R2, and connect sense to the new measurement point. R3: sense point for output voltage after the filter. To set sense point here, remove R2, and solder a 0W resistor at R3. VOUT selection: the output voltage can be selected with values of 0.8V, 1.8V, 3.3V, 5V, 12V, 15V, and 24V by shorting a 0W resistor to the respective places as seen in the board silkscreen. R21, R22: trim the output voltage. Refer to "OUTPUT VOLTAGE TRIMMING" www.recom-power.com REV.: 0/2020 P-3 RPX-1.0-EVM-1 Evaluation Module Specifications (measured @ Ta= 25C, full load and after warm-up unless otherwise stated) OUTPUT VOLTAGE TRIMMING The RPX-1.0 offers the feature of trimming the output voltage by using external trim resistors. The values for trim resistors are shown in trim tables below according to E96 values; therefore, the specified voltage may slightly vary. Refer to "Selection Guide" for applicable Vout range. Trim up Trim Trim down Trim +Vout Rup (R22) GND +Vout Rup GND Rdown Trim Rdown (R21) Trim Calculation: Voutnom = nominal output voltage [VDC] Voutset = trimmed output voltage [VDC] Vref = reference voltage [VDC] Rup = trim up resistor [kW] Rdown = trim down resistor [kW] RHI, RLO = internal resistors RLO Vref 60k5W 75kW 0.807VDC RHI Rup = Rdown = - 1k = 605kW Rup according to E96 604kW Voutset = Rup (E96) Voutset = 1.8V Trim up 1.90 1.98 [VDC] Voutset = 3.4 3.5 3.6 3.63 [VDC] 3M01 750k 604k 332k [W] Rup (E96) 604k 301k 200k 182k [W] Trim down 1.7 1.6 1.5 1.44 [VDC] Voutset = 665k 294k 174k 133k [W] Rdown (E96) Voutset = 5V 5.2 5.3 5.5 604k 301k 200k 121k 4.7 4.5 4.3 4 976k 549k 374k 237k [VDC] [W] Voutset = Rup (E96) 3 2.8 2.64 [VDC] 549k 301k 210k [W] Voutset = 12V 12.4 12.6 13 13.2 [VDC] 150k 100k 59k 49k9 [W] 11 10.6 10 9.6 768k 523k 348k 274k [W] Trim down [VDC] Voutset = [W] Rdown (E96) Voutset = 15V 15.5 16 16.3 16.5 [VDC] 121k 59k 45k3 39k2 [W] 14 13 12.5 12 1M 453k 348k 280k Voutset = Rup (E96) [VDC] Voutset = 24V Trim up Trim down Voutset = Rdown (E96) 3.1 866k Trim up 5.1 Trim up Voutset = Rup (E96) Voutset = 3.3V 1.88 Trim down Voutset = Rdown (E96) = 239kW 1.82 Trim up Voutset = Rup (E96) (4 - 0.807) x 75kW 5-4 Rdown according to E96 237kW Trim down Voutset = Rdown (E96) Voutnom - Vset Practical Example RPX-1.0, trim down: Voutset=4VDC 60k5W 5.1 - 5 Trim up (Voutset - Vref) x RLO Rdown = - 1k Voutset - Vnom [kW] Practical Example RPX-1.0, trim up: Voutset=5.1VDC Rup = RHI 25 25.5 26 26.4 [VDC] 59k 39k2 29k4 24k3 [W] 23 22 20 19.2 [VDC] 1M65 787k 357k 287k [W] Trim down www.recom-power.com [VDC] Voutset = [W] Rdown (E96) REV.: 0/2020 P-4 RPX-1.0-EVM-1 Evaluation Module Specifications (measured @ Ta= 25C, full load and after warm-up unless otherwise stated) DIMENSION AND PHYSICAL CHARACTERISTICS Parameter Type Value Dimension (LxWxH) 85.0 x 55.0 x 6.5mm Weight 21.2g typ. Layout Top Layer Layer 2 Layer 3 Bottom Layer Notes: Note3: Visit www.recom-power.com/eval-ref-boards to download the Gerber files BOM Comp. Description Manufacturer Part Number Manufacturer Remarks C1 10nF 50V X7R 0603 CL10B103KB8NNNC Samsung Electro-Mechanics C2 1F 50V X7R 0805 CL21B105KBFNNNE Samsung Electro-Mechanics C3 10F 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics not mounted C4 10F 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics not mounted C5 10F 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics C6 10F 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics C7 10F 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics continued on next page www.recom-power.com REV.: 0/2020 P-5 RPX-1.0-EVM-1 Evaluation Module Specifications (measured @ Ta= 25C, full load and after warm-up unless otherwise stated) Description Manufacturer Part Number Manufacturer C8 Comp. 10F 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics C9 10F 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics L10 10F 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics L11 10F 50V X7R 1210 CL32B106KBJNNWE Samsung Electro-Mechanics Remarks L12 33pF 50V C0G 0603 CL10C330JB8NNNC Samsung Electro-Mechanics L1 FERRITE BEAD BLM18PG330SN1D BLM18PG330SN1D Murata L2 FERRITE BEAD 1008 L3 IND-3.9uH-1.32A-045x032x026 L4 FERRITE BEAD 0805 not mounted L5 FERRITE BEAD 1206 not mounted L6 FERRITE BEAD 2220 not mounted L7 FERRITE BEAD 600 OHM 0805 1LN L8 FERRITE BEAD 1206 not mounted L9 FERRITE BEAD 2220 not mounted not mounted RLS-397 742792040 RECOM Wurth P1 CONNECTOR XW4K-04A1-H1 Omron Electronics Inc not mounted P2 CONNECTOR XW4K-04A1-H1 Omron Electronics Inc not mounted P3 CONNECTOR 2060-452/998-404 Wago P4 CONNECTOR 2060-452/998-404 Wago R1 100kW 0.1W 1% 0603 RC0603FR-07100KL Yageo R2 0R 0.1W 0603 RC0603JR-070RL Yageo R3 0R 0.1W 0603 RC0603JR-070RL Yageo R4 100kW 0.1W 1% 0603 RC0603FR-07100KL Yageo R5 75kW 0.1W 1% 0603 RC0603FR-0775KL Yageo R6 60k4W 0.1W 1% 0603 RC0603FR-0760K4L Yageo R7 24k3W 0.1W 1% 0603 RC0603FR-0724K3L Yageo R8 14k3W 0.1W 1% 0603 RC0603FR-0714K3L Yageo R9 5k36W 0.1W 1% 0603 RC0603FR-075K36L Yageo R10 4k22W 0.1W 1% 0603 RC0603FR-074K22L Yageo R11 2k61W 0.1W 1% 0603 RC0603FR-072K61L Yageo R12 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted R13 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted R14 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted R15 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted R16 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted R17 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted R18 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted R19 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted R20 1k 0.1W 1% 0603 RC0603FR-071KL Yageo R21 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted R22 0R 0.1W 0603 RC0603JR-070RL Yageo not mounted U1 RPX-1.0 MODULE RPX-1.0 RECOM www.recom-power.com REV.: 0/2020 P-6 RPX-1.0-EVM-1 Evaluation Module Specifications (measured @ Ta= 25C, full load and after warm-up unless otherwise stated) PACKAGING INFORMATION Parameter Type Packaging Dimension (LxWxH) Value 114.0 x 60.0 x 28.0mm Packaging Quantity 1pc Contents * * RPX-1.0-EVM-1 Evaluation Module Terms and Conditions The product information and specifications may be subject to changes even without prior written notice.The product has been designed for various applications; its suitability lies in the responsibility of each customer. The products are not authorized for use in safety-critical applications without RECOM's explicit written consent. A safety-critical application is an application where a failure may reasonably be expected to endanger or cause loss of life, inflict bodily harm or damage property. The applicant shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized use of RECOM products in such safety-critical applications. www.recom-power.com REV.: 0/2020 P-7