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Test Board User Guide BMR4742001

28701-ROA1286016 Rev A 2021/4/25

10 (20)

7

Additional Input/output Capacitance

At the bottom side, there are places for additional input/output capacitors.

Figure 3 Places for additional input/output capacitors.

8

Electronic loads

In order to perform load transient tests on the modules, up to 2 pcs of PuLS loads

can be connected to the output of the board.

additional input

capacitors

additional output

capacitors

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Содержание 1286016

Страница 1: ...Test Board User Guide BMR4742001 ROA 170 0146016 USER GUIDE ...

Страница 2: ...nt are subject to revision without notice due to continued progress in methodology design and manufacturing Flex shall have no liability for any error or damage of any kind resulting from the use of this document Trademarks All trademarks are properties of their owners Flex is the trademark of Flextronics International PMBus is a trademark of SMIF Inc Windows and Microsoft are the trademarks of Mi...

Страница 3: ...r 7 4 Power up and Power down Instructions 7 4 1 Power up instruction 7 4 2 Power down instruction 8 5 Address and VSET Resistor 9 5 1 Adjustment of address resistor 9 5 2 Adjustment of VSET resistors 9 6 Test points 9 7 Additional Input output Capacitance 10 8 Electronic loads 10 9 Schematic 11 10 Bill of Materials 11 11 Layout description 12 11 1 PCB stack up summary 12 11 2 Input capacitance 14...

Страница 4: ... Flex For general questions or interest in our products please contact your local sales representative Contact details are available from our website https flex com expertise power scalable power modules 1 2 Prerequisites In order to operate the ROA 128 6016 board the following is needed Power supply 6 15 V USB PMBus adapter Flex KEP 910 17 It is only needed when the PMBus shall be used The Flex P...

Страница 5: ...42001 28701 ROA1286016 Rev A 2021 4 25 5 20 2 Reference Board ROA 128 6016 In Figure 1a and 1b the top and bottom sides of the ROA 128 6016 are shown Figure 1a ROA 128 6016 top side 1 1 2 2 3 4 5 6 7 8 8 9 9 10 10 11 12 13 13 14 ...

Страница 6: ... SMB Oscilloscope connectors for Vin ripple measurement 7 SMB Oscilloscope connectors for Vo ripple measurement 8 Input electrolytic and ceramic capacitors 9 Output Polymer and ceramic capacitors 10 Pin strap resistors and jumper for Vout setting 11 Pin strap resistors for PMBus address 12 PMBus SYNC and EN signal probing points 13 Input voltage probing points 14 Output voltage probing points Posi...

Страница 7: ...is board is the Flex KEP 910 17 3 1 Connection of Flex KEP 910 17 USB PMBus adapter Connect the Flex KEP 910 17 USB PMBus adapter to the PMBus header see position 5 in Figure 1a 4 Power up and Power down Instructions 4 1 Power up instruction Before power up read the following table to make sure the module works in the best condition Note The default switching frequency fsw is 500kHz if the module ...

Страница 8: ... through connectors on position 1 Set Enable switch to ON position The power good LED will give green light Note PG LED is powered by USB PMBus adapter so only connect demo board with computer through adapter LED will be lit when module Vout is ready Then increase the load and through K2 position 7 to measure the Vout and ripple 4 2 Power down instruction Set Enable switch to OFF position Turn off...

Страница 9: ...ct the proper values Figure 2 Address resistor position R4 and R5 is shown in the picture 5 2 Adjustment of VSET resistors Populate a jumper in each Vset position to get the desired output voltage The silk screen marking shows the voltage settings that can be achieved by populating jumpers 6 Test points Input voltage should be measured at test points VIN GND which are connected directly to the VIN...

Страница 10: ...tom side there are places for additional input output capacitors Figure 3 Places for additional input output capacitors 8 Electronic loads In order to perform load transient tests on the modules up to 2 pcs of PuLS loads can be connected to the output of the board additional input capacitors additional output capacitors ...

Страница 11: ...er information The PuLS loads can be easily connected through the sockets see position 17 in Fig 1b 9 Schematic See schematic of Board ROA 128 6016 for more information 10 Bill of Materials Designator Qty Description C1 C47 2 CAP ALUM 470uF 20 25V SMD C6 C7 C8 C9 C43 C44 C45 C46 C48 C49 10 330uF 10 6 3V polymer CAPACITOR C23 C25 2 CAP TANT POLY 10uF 35V 2917 C2 C3 C4 C5 4 22uF 10 1210 25V X7R CAPA...

Страница 12: ...3 0 1W RESISTOR 55C 155C R31 1 412kohm 1 0603 0 1W RESISTOR 55C 155C R10 R11 R12 3 10kohm 1 0603 0 1W RESISTOR 55C 155C R14 R15 2 180ohm 1 0603 0 1W RESISTOR 55C 155C R17 R18 2 100kohm 1 0603 0 1W RESISTOR 55C 155C T1 T2 2 nfet_d3 g1 s2 BSS123 sot23 D1 1 VS 43CTQ100SPBF 100V 2x20A D2PAK TO 263AB 11 Layout description The following sections describe how the layout guidelines provided in the ROA 128...

Страница 13: ...8701 ROA1286016 Rev A 2021 4 25 13 20 Layer 2 VOUT PGND plane signal traces 2 oz Layer 3 VIN VOUT PGND planes 2 oz Bottom layer VIN VOUT PGND planes Component footprints signal traces 2 oz Figure 4 Connection of power pins on top layer ...

Страница 14: ...ts or changes in input voltage follows the rules of the ceramic capacitors described above 11 3 Output capacitance Ceramic output capacitors are placed close to VOUT pins of the module to handle the module s output ripple Polymer capacitor are added to take care of load transient see Technical Specification for load transient performance It is important to secure low impedance connections Note the...

Страница 15: ...Test Board User Guide BMR4742001 28701 ROA1286016 Rev A 2021 4 25 15 20 12 Layout top view Top side component layout ...

Страница 16: ...Test Board User Guide BMR4742001 28701 ROA1286016 Rev A 2021 4 25 16 20 Top layer ...

Страница 17: ...Test Board User Guide BMR4742001 28701 ROA1286016 Rev A 2021 4 25 17 20 Layer 2 ...

Страница 18: ...Test Board User Guide BMR4742001 28701 ROA1286016 Rev A 2021 4 25 18 20 Layer 3 ...

Страница 19: ...Test Board User Guide BMR4742001 28701 ROA1286016 Rev A 2021 4 25 19 20 Bottom Layer ...

Страница 20: ...Test Board User Guide BMR4742001 28701 ROA1286016 Rev A 2021 4 25 20 20 Bottom side component layout ...

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