EPM78-EVK

EPM78Vx Evaluation kit user guide EPM78Vx Evaluation kit user guide EPM78Vx Evaluation kit user guide Contents Introduction INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 IMPORTANT NOTICE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 This document describes the operations of evaluation kits (EVK) concerning the Eaton’s EPM DC-DC non-isolated converter product. The EVK includes test points for all main points where probing is necessary for evaluation. The EVK supports many options for Eaton’s product configuration. Using these options, the user is allowed to test all desired electrical specifications. This guide describes the test configurations and typical equipment setup. The typical input and output waveforms are also presented. DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Important notice TEST SET-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 • Please read the product datasheet and EVK user guide before using the EVK. OPERATION NOTES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 • Please do not remove the product from the EVK. TEST RESULTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10 • This product is an ESD sensitive component and should be tested in an ESD protected area. • The EVK is designed to operate in clean and dust-free office or laboratory. The EVK should be protected from sunlight and sources of heat, and making sure air is flowing across the tool. Please keep it away from vibration or strong electromagnetic fields generated by electrical equipment. • When connecting and disconnecting the power interface, please turn off the power supply to avoid accidental short circuits causing injury. • The power connection must avoid reverse voltage application. • During the test, the electrical rating should be kept within the range specified in the data sheet. SCHEMATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 COMPONENT LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Description This EVK supports user test electrical performance of Eaton’s DC-DC non-isolated converter part numbers EPM78V1-01R8-01R0R, EPM78V2-03R3-01R0R, EPM78V2-05R0-01R0R, EPM78V2-06R5-01R0R, EPM78V2-12R0-01R0R, and EPM78V2-15R0-01R0R. Figure 1 shows the EPM78-EVK and function outline. This EVK is made up of the following functions, first is the input and output connectors, and the following is EMI Class A/B protection circuit. This EVK is combined EPM78 complete family products in a PCB. Figure 1. EPM78-EVK 2 EPM78VX EVALUATION KIT USER GUIDE Technical note ELX1038 April 2021 www.eaton.com/magnetics EPM78VX EVALUATION KIT USER GUIDE Technical note ELX1038 April 2021 www.eaton.com/magnetics 3 EPM78Vx Evaluation kit user guide EPM78Vx Evaluation kit user guide Specifications Table 1 shows the EPM78-EVK general performance specifications. The EPM78-EVK can deliver up to 1 A of output current and with a wide DC input. . The voltages can step down to 1.8 Vdc to 15 Vdc. The modules can achieve high efficiency up to 94.5% , wide operation temperature from -40 °C to +85 °C, and has short circuit protection. Please refer to the product data sheet for the detailed specifications EPM78Vx data sheet. Operation notes EMI filter Figure 3 shows the EMI filter circuit of EVK board. See Table 3 for the compnent list for each EMI class. Table 1- General specifications Parameter Input Conditions Input voltage Minimum Nominal 4.75 Output current Output Minimum load Maximum Unit 32 Vdc 1000 mA 1 Ripple and noise* 20 MHz BW Output voltage accuracy -3 % 100 mVp-p +3 % Figure 3: EMI filter circuit diagram Table 3- EMI class component list * Ripple & noise: Measured with 20 MHz bandwidth and 4.7 µF ceramic capacitor. Class C1 L1 C3 EPM78-EVK Class A 4.7 µF, 1206, 50 V ceramic capacitor 3.3 µH N/A EPM78-EVK Class B 10 µF, 1210, 50 V ceramic capacitor 10 µH 4.7 µF, 1206, 50 V ceramic capacitor Test set-up Table 2- Pin configuration Figure 2: Test set-up example 4 Connector Function Pin symbol Description J1 Input terminal VIN GND Connect the VIN and GND terminals to the DC power source respectively. J2 Output terminal VO GND Connect the VO and GND terminals to the (electronic) load. JP1/JP4 Input voltage measuring point +VIN GND Connect the +VIN and GND terminals to the voltage meter. JP2 Output ripple measuring point +VO GND Connect the +VO and GND terminals to the probe with short ground lead. JP3/JP5 Output voltage measuring point +VO GND Connect the +VO and GND terminals to the voltage meter. EPM78VX EVALUATION KIT USER GUIDE Technical note ELX1038 April 2021 www.eaton.com/magnetics EPM78VX EVALUATION KIT USER GUIDE Technical note ELX1038 April 2021 www.eaton.com/magnetics 5 EPM78Vx Evaluation kit user guide EPM78Vx Evaluation kit user guide Test results Typical characteristics Typical characteristics Model number: EPM78V2-15R0-01R0R Model number: EPM78V2-05R0-01R0R Efficie n cy vs lo a d P o we r dis s ip a tio n vs lo a d P o we r dis s ip a tio n vs lo a d Efficie n cy vs lo a d Lin e r e g u la tio n vs lo a d Lin e r e g u la tio n vs lo a d Lo a d r e g u la tio n vs loa d Lo a d r e g u la tio n vs loa d Accu ra cy vs lo a d Accu ra cy vs lo a d 6 EPM78VX EVALUATION KIT USER GUIDE Technical note ELX1038 April 2021 www.eaton.com/magnetics EPM78VX EVALUATION KIT USER GUIDE Technical note ELX1038 April 2021 www.eaton.com/magnetics 7 EPM78Vx Evaluation kit user guide EPM78Vx Evaluation kit user guide EVK set-up and operation wave form EVK set-up and operation wave form Model number: EPM78V2-05R0-01R0R Conditions: Ta=+25 °C, VIN=24 V, IO=1 A (full load). Start-up Model number: EPM78V2-15R0-01R0R Conditions: Ta=+25 °C, VIN=24 V, IO=1 A (full load). Shut-down S ta rt-u p Ch1: Input voltage (10 V/div.) Ch2: Output voltage (2 V/div.) Time scale: (2 ms/div.) Output ripple and noise Ch1: Input voltage (10 V/div.) Ch2: Output voltage (2 V/div.) S h u t-d o wn Time scale: (2 ms/div.) Ch1: Input voltage (10 V/div.) Ch2: Output voltage (5 V/div.) Time scale: (2 ms/div.) 8 Time scale: (2 ms/div.) Transient response (75%-100% load) Tra n s ie n t re s p o n s e (75%-100% lo a d ) O u tp u t rip p le a n d n o is e Ch1: Output voltage (20 mV/div) Ch1: Input voltage (10 V/div.) Ch2: Output voltage (5 V/div.) Time scale: (1 us/div.) Ch1: Input voltage (10 V/div.) Ch2: Output voltage (20 mV/div.) Ch4: Output current (500m A/div) Time scale: (100us/div.) EPM78VX EVALUATION KIT USER GUIDE Technical note ELX1038 April 2021 www.eaton.com/magnetics Ch1: Output mV/div.) voltage (20 Time scale: (1 us/div.) Ch1: Input voltage (10 V/div.) Ch2: Output voltage (100 mV/div.) Ch4: Output current (500m A/div) Time scale: (100 us/div.) EPM78VX EVALUATION KIT USER GUIDE Technical note ELX1038 April 2021 www.eaton.com/magnetics 9 EPM78Vx Evaluation kit user guide Conducted emmision measurement Model number: EPM78V2-05R0-01R0R C o n d u cte d cla s s B o f ne u tra l With Class B filter Blue line: Peak Band: 0.15 - 30 MHz Green line: Average C o n d u c te d cla s s B o f lin e With Class B filter Blue line: Peak Band: 0.15 - 30 MHz Green line: Average 10 EPM78VX EVALUATION KIT USER GUIDE Technical note ELX1038 April 2021 www.eaton.com/magnetics Schematic Layout Component list (for EPM78V2-05R0-01R0R) Description Qty EPM78V2-05R0-01R0R 1 Capacitor, X7R, 1210, 10UF±10%, 50V 1 C2 Capacitor, X7R, 1210, 4.7UF±10%, 50V 2 C4, C6 Inductor, MPCA-0530-100M 1 L1 Capacitor, 220UF/200V, KXJ series, 12.5x25 mm 1 C1 Terminal Block, 2P, pitch: 5.0mm 2 J1, J2 Pin Header, single row, 14.2mm, 2P 5 JP1, JP2, JP3, JP4, JP5 Eaton Electronics Division 1000 Eaton Boulevard Cleveland, OH 44122 United States Eaton.com/electronics © 2021 Eaton All Rights Reserved Printed in USA Publication no. EXL1038 BU-ELX21038 April 2021 Eaton is a registered trademark. All trademarks are property of their respective owners. Designator