Tool/software:
Good Afternoon,
I have designed a circuit using three TPS22992RXPR to control 3 power rails
The use of these components was recommended by the external system designer.
VDD_SW and DVDDLO_SW will be asserted at the same time. The desired operation for the rails (voltage/current) is:
PS_VDD_SW (0.8V/16mA) and PS_DVDDLO_SW (1.8V/1.6mA) to ramp up at different rates to settle at the same time. My requirement is that it takes no less than 100us to ramp up.
DVDD_SW will then be asserted to energize DVDD_BATT_PS (3.3V/600uA/10mA). It must also take at least 100us to ramp up
I have attached the schematic and BOM. Single pin devices with J reference designators are test points. Two pin devices with J reference designators are jumpers to isolate the power supply from the rest of the circuit on the prototype board.
Please let me know if there is any clarifying information that I can provide.
Thanks
Frank
TITLE: Bill of Materials DATE: 08/12/2024 DESIGN: ps_only Ref MANUFACTURER MPN Qty VALUE Des ===== ==================== ==================== ==== ========== C75 Murata GRM21BZ71A226ME15L 1 22uF C76 Murata GRM21BZ71A226ME15L 1 22uF C77 Murata GRM21BZ71A226ME15L 1 22uF C78 Murata Electronics GRM21BR71A106MA73L 1 10uF C79 Murata Electronics GRM21BR71A106MA73L 1 10uF C80 Murata Electronics GRM21BR71A106MA73L 1 10uF C81 Murata GRM155Z71A105KE01D 1 1uF C83 Murata GRM155R71H681KA01D 1 680pF C84 Murata GRM155Z71A105KE01D 1 1uF C85 Murata GRM188R71A225KE15D 1 2.2uF C86 Murata GRM188R71A225KE15D 1 2.2uF C87 Murata Electronics GRM21BR71A106MA73L 1 10uF C88 Murata Electronics GRM21BR71A106MA73L 1 10uF C89 Murata GRM155R71H681KA01D 1 680pF C90 Murata Electronics GRM1885C1H512JA01D 1 5100pF C91 Murata GRM1885C1H222JA01D 1 2200pF C92 Murata GRM155Z71A105KE01D 1 1uF C93 Murata GRM155Z71A105KE01D 1 1uF C94 Murata GRM155Z71A105KE01D 1 1uF C95 Murata Electronics GRM21BR71A106MA73L 1 10uF C96 Murata Electronics GRM21BR71A106MA73L 1 10uF C97 Murata Electronics GRM21BR71A106MA73L 1 10uF C98 Murata GRM32ER71A476ME15L 1 47uF C99 Murata GRM32ER71A476ME15L 1 47uF C100 Murata GRM033Z71A104KE14D 1 0.1uF C101 Murata GRM033Z71A104KE14D 1 0.1uF C102 Murata GRM033Z71A104KE14D 1 0.1uF C103 Murata GRM155Z71A105KE01D 1 1uF C104 Murata GRM155Z71A105KE01D 1 1uF C105 Murata GRM155Z71A105KE01D 1 1uF C106 Murata GRM033Z71A104KE14D 1 0.1uF C107 Murata GRM033Z71A104KE14D 1 0.1uF C108 Murata GRM033Z71A104KE14D 1 0.1uF CR2 Littelfuse Inc SMF6.0A 1 ? CR3 Littelfuse Inc SMF6.0A 1 ? J4 Keystone Electronics 5019 1 ? J5 Keystone Electronics 5019 1 ? J6 Keystone Electronics 5019 1 ? J7 Keystone Electronics 5019 1 ? J8 Harwin M20-9990246 1 ? J9 Harwin M20-9990246 1 ? J10 Harwin M20-9990246 1 ? J12 Harwin M20-9990246 1 ? J13 Harwin M20-9990246 1 ? J14 Keystone Electronics 5019 1 ? J15 Keystone Electronics 5019 1 ? J20 3M N2510-6003-RB 1 ? J21 Keystone Electronics 5019 1 ? J22 Keystone Electronics 5019 1 ? J23 Harwin M20-9990346 1 ? J24 Keystone Electronics 5019 1 ? J25 Keystone Electronics 5019 1 ? J26 Keystone Electronics 5019 1 ? J27 Keystone Electronics 5019 1 ? J28 Harwin M20-9990246 1 ? J29 Keystone Electronics 5019 1 ? J30 Harwin M20-9990246 1 ? J31 Keystone Electronics 5019 1 ? J32 Harwin M20-9990246 1 ? J33 Keystone Electronics 5019 1 ? J34 Keystone Electronics 5019 1 ? J35 Keystone Electronics 5019 1 ? J36 Harwin M20-9990246 1 ? L1 TDK VLCF4020T-2R2N1R7 1 2.2uH L2 TDK VLCF4020T-2R2N1R7 1 2.2uH L3 TDK VLCF4020T-2R2N1R7 1 2.2uH R22 Vishay CRCW0603750KFKEA 1 750k R23 Vishay CRCW0603249KFKEA 1 249k R24 Yageo RC0603FR-074K75L 1 4.75k R25 Yageo RC0603FR-074K75L 1 4.75k R26 Vishay CRCW060310R0FKEA 1 10 R27 KEMET RC0402BR-0710KL 1 10k R28 KEMET RC0402BR-0710KL 1 10k R29 KEMET RC0402BR-0710KL 1 10k R30 KEMET RC0402BR-0710KL 1 10k R31 Vishay CRCW0603249KFKEA 1 249k R32 Vishay CRCW060356K0FKEA 1 56k R33 Vishay CRCW0603249KFKEA 1 249k R34 Vishay CRCW060356K0FKEA 1 56k R35 KEMET RC0402BR-0710KL 1 10k R36 KEMET RC0402BR-0710KL 1 10k R37 KEMET RC0402BR-0710KL 1 10k R38 KEMET RC0402BR-0710KL 1 10k SW1 C&K Components KT11P2JM34LFS 1 ? U3 Texas Instruments TPS2116DRLR 1 ? U4 Texas Instruments TPS65023QRHARQ1 1 ? U5 Texas Instruments TPS22992RXPR 1 ? U6 Texas Instruments TPS22992RXPR 1 ? U7 Texas Instruments TPS22992RXPR 1 ? TOTAL 89 ===== ==================== ==================== ==== ==========
