Features Evaluation Module * Evaluation platform for RPL-3.0 Buck Regulator Module * Thermal design considerations included * EMI Class A filter * Easy evaluation of output voltage selection, control, power good and sensing functions Evaluation Module RPL-3.0-EVM-1 Description The RPL-3.0-EVM-1 generates a constant output voltage selectable from 1.8V, 3.3V, or 5V from a DC input in the range of 4 - 18V. It has a maximum continuous output current of 3 A. All the functions of the RPL-3.0 such as output voltage selection, control, power good, 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 A levels. Alternate component positions are included to allow experimentation to optimize the EMC performance depending on operating conditions and budget. Selection Guide Part Number RPL-3.0-EVM-1 Input Voltage Range [VDC] Output Voltage (1) [VDC] 4.0 - 18 1.8 4.5 - 18 3.3 6.5 - 18 5 Output Current max. [A] 3 Notes: Note1: refer to SAFE OPERATING AREA of RPL-3.0 datasheet Quick Start Guide 1. Connect P3 to power supply (observe correct polarity!) 2. Connect P4 to the load (no load operation is allowed) 3. The evaluation module is preset to 5Vout. The output voltage can be selected with values of 1.8V, 3.3V, and 5V by shorting a 0W resistor to the respective places as seen in the board silkscreen. 4. The sense pin is connected to the RPL output pin, so the preset voltage is very accurate at the output of the RPL. To compensate any losses of the filter, remove the resistor at R1, and solder a zero ohm resistor at R3. 5. CTRL The device is preset as normally on. It can be disabled by pulling the CTRL pad to GND. Short R5 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 RPL-3.0-EVM-1 Evaluation Module Specifications (measured @ Ta= 25C, full load and after warm-up unless otherwise stated) Component Placement 11 10 9 8 7 6 PGOOD VIN CTRL GND TRIM SENSE R17 R16 VIN 1 4V to 18V C1 C2 L1 L2 R8 L3 L4 C13 C3 C4 C5 C6 4 L5 L6 L7 R6 C12 R4 1 P2 3A max. P4 GND U1 2 5 R3 R11 R10 R9 R15 P1 R7 1 SENSE R1 5V 3.3V 1.8V VOUT SELECT 1 1 2 P3 C11 2 C7 2 C8 C9 C10 2 VOUT R5 R2 GND RPL-3.0-EVM-1 3 FOR EVALUATION ONLY www.recom-power.com/eval-ref-boards Connector Description P3 P1 (Not Mounted) Pin Name 1 NC 2 NC Description Pin Name No Connection 1 VIN Positive Input Voltage (observe correct polarity!) No Connection 2 GND Common GND Pin Name Description VOUT Positive Output Voltage GND Common GND P4 P2 (Not Mounted) Pin Name Description Description 1 NC No Connection 1 2 NC No Connection 2 Pads Direct Connection www.recom-power.com Pin Name 1 VIN Description Positive Input Voltage 2 GND Negative Input Voltage (GND) 3 GND Negative Output Voltage (GND) 4 VOUT Positive Output Voltage 5,6 SENSE Output Voltage Sense Pin (leave open if not used) 7 TRIM TRIM Pad (leave open if not used) 8 GND Negative Input Voltage (GND) 9 CTRL CTRL Pad (leave open if not used) 10 VIN 11 PGOOD Positive Input Voltage Power Good Signal REV.: 0/2020 P-2 RPL-3.0-EVM-1 Evaluation Module Specifications (measured @ Ta= 25C, full load and after warm-up unless otherwise stated) Schematic L1 2220 VIN 1 2 L2 1206 L5 2220 L4 0805 L6 1206 L3 1812 C1 1206 2 C2 1206 C3 0603 C4 1206 C5 1206 C6 1206 P3 RPL-3.0 U1 VOUT VIN R2 0603 1 +Sense 6 VOUT R4 0603 R1 0603 C7 1210 C8 1210 C9 1206 C10 1206 C11 1206 R3 0603 1 2 P4 SENSE CTRL R5 0603 FB 9 L7 0805 5 7 VCC R6 0603 R7 0603 C12 0603 R9 0603 R10 0603 TRIM R11 0603 VOUT Select C13 0603 R8 0603 5V 3.3V 10 PG PG PGND AGND 3,4 1.8V 8 +Sense Notes: Note2: Gray colored components are not mounted Description U1: RPL-3.0 power module. C1,C2,L1,L2,L3,L4,C3,C4,C5,C6: allow placement of various sized components to test input filter design. The populated filter is designed to meet EN55022 class A. Note: Connect a 220uF across the input for damping the LISN. C7,C8,C9,C10,L5,L6,L7,C11: allow placement of various sized components to test output filter design. The populated filter is designed to meet EN55022 class A. Note: Connect a 220uF across the input for damping the LISN. R2 and R5: configure CTRL. R2 is populated to enable the RPL-3.0. Short R5 in order to disable the RPL-3.0. R1: populated zero ohm 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 R1, and connect sense to the new measurement point. R3: sense point for output voltage after the filter. To set sense point here, remove R1 and solder a zero ohm resistor at R3. VOUT Selection: the output voltage can be selected with values of 1.8V, 3.3V, and 5V by shorting a zero ohm resistor to the respective places as seen in the board silkscreen. R16, R17: trim the output voltage. Refer to "OUTPUT VOLTAGE TRIMMING" www.recom-power.com REV.: 0/2020 P-3 RPL-3.0-EVM-1 Evaluation Module Specifications (measured @ Ta= 25C, full load and after warm-up unless otherwise stated) OUTPUT VOLTAGE TRIMMING The RPL-3.0 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 (R17) GND GND +Vout Rup Rdown Trim Rdown (R16) 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 RHI RLO Vref 37k6W 47kW 0.8VDC RHI Rup = Voutset - Vnom [kW] Practical Example, trim up: Voutset= 5.1VDC Rup = Rdown = - 1k (Voutset - Vref) x RLO Voutnom - Vset Practical Example, trim down: Voutset= 4VDC 37k6W 5.1 - 5 Rdown = - 1k = 376kW Rup according to E96 374kW (4 - 0.8) x 47kW 5-4 = 150k4W Rdown according to E96 150kW Voutset = 1.8V Trim up Voutset = 1.82 1.88 1.90 1.98 [VDC] Rup (E96) 1M87 464k 374k 210k [W] Trim down Voutset = Rdown (E96) 1.7 1.6 1.5 1.44 [VDC] 422k 187k 110k 84k5 [W] Voutset = 3.3V Trim up Voutset = 3.4 3.5 3.6 3.63 [VDC] Rup (E96) 374k 187k 124k 113k [W] 3.1 3 2.8 2.64 [VDC] 536k 340k 187k 130k [W] Trim down Voutset = Rdown (E96) Voutset = 5V Trim up Voutset = 5.1 5.2 5.3 5.5 [VDC] Rup (E96) 374k 187k 124k 75k [W] Trim down Voutset = Rdown (E96) www.recom-power.com 4.7 4.5 4.3 4 619k 348k 237k 150k [VDC] [W] REV.: 0/2020 P-4 RPL-3.0-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 C1 10F 25V X7R 1206 CL31B106KAHNNNE Samsung Electro-Mechanics C2 10F 25V X7R 1206 CL31B106KAHNNNE Samsung Electro-Mechanics C3 100nF 25V X7R 0603 CL10B104KA8NNNC Samsung Electro-Mechanics C4 10F 25V X7R 1206 CL31B106KAHNNNE Samsung Electro-Mechanics C5 10F 25V X7R 1206 CL31B106KAHNNNE Samsung Electro-Mechanics C6 10F 25V X7R 1206 CL31B106KAHNNNE Samsung Electro-Mechanics C7 22F 16V X7R 1210 CL32B226KOJNNNE Samsung Electro-Mechanics Remarks not mounted continued on next page www.recom-power.com REV.: 0/2020 P-5 RPL-3.0-EVM-1 Evaluation Module Specifications (measured @ Ta= 25C, full load and after warm-up unless otherwise stated) Description Manufacturer Part Number Manufacturer C8 Comp. 22F 16V X7R 1210 CL32B226KOJNNNE Samsung Electro-Mechanics Remarks C9 10F 25V X7R 1206 CL31B106KAHNNNE Samsung Electro-Mechanics not mounted C10 10F 25V X7R 1206 CL31B106KAHNNNE Samsung Electro-Mechanics not mounted C11 10F 25V X7R 1206 CL31B106KAHNNNE Samsung Electro-Mechanics C12 100pF 25V X7R 0603 CC0603KRX7R8BB101 Yageo C13 1 F 16V X7R 0603 CL10B105KO8NFNC Samsung Electro-Mechanics L1 FERRITE BEAD 2220 HI2220R301R-10 Laird not mounted L2 FERRITE BEAD 1206 742792121 Wurth not mounted L3 FERRITE BEAD 74279252 74279252 Wurth L4 FERRITE BEAD 0805 742792040 Wurth not mounted L5 FERRITE BEAD 2220 HI2220R301R-10 Laird not mounted L6 0R 1206 CRCW12060000Z0EAC Vishay L7 0R 0805 RC0805JR-070RL Yageo not mounted 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 0R 0.1W 0603 RC0603JR-070RL Yageo R2 100K OHM 0.1W 1% 0603 RC0603FR-07100KL Yageo R3 0R 0.1W 0603 RC0603JR-070RL Yageo R4 1K OHM 0.1W 1% 0603 RC0603FR-071KL Yageo R5 0R 0.1W 0603 RC0603JR-070RL Yageo R6 47K OHM 0.1W 1% 0603 RC0603FR-0747KL Yageo not mounted not mounted R7 1K OHM 0.1W 1% 0603 RC0603FR-071KL Yageo R8 100K OHM 0.1W 1% 0603 RC0603FR-07100KL Yageo R9 37K4 OHM 0.1W 1% 0603 RC0603FR-0737K4L Yageo R10 15K OHM 0.1W 1% 0603 RC0603FR-0715KL Yageo R11 8K87 0.1W 1% 0603 RC0603FR-078K87L Yageo R12 0R 0.1W 0603 RC0603JR-070RL Yageo 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 U1 RPL-3.0 RPL-3.0 RECOM 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 www.recom-power.com REV.: 0/2020 P-6