# BRAVE POWER MANAGEMENT BOARD ## Description Brave is a versatile and efficient power board that can provide 12v, 5v and 3.3v outputs for various applications. It can be powered by battery or solar panel, and the battery can be recharged by solar energy. It can also be powered by a USB port if needed. This board is ideal for IoT projects that require reliable and stable power supply in different environments. #internetOfThings #IoT #power #management #usb ## Project Details - **Owner:** collinsemasi - **Created:** 11/8/2023 - **Last Updated:** 5/14/2025 - **Visibility:** Public - **Stars:** 21 - **Forks:** 32 - **Copies:** 47 ## Key Components ### D1 — [SS34](https://www.flux.ai/jecstronic/ss34~8tm.md) - Part Type: Diode - Manufacturer Part Number: SS34 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.onsemi.com/pdf/datasheet/ss39-d.pdf - Manufacturer Name: onsemi **Pins:** - A [pin 2] - K [pin 1] ### D2 — [LED_0603_1608Metric](https://www.flux.ai/adrian95/led06031608metric~990.md) - Color: Green - License: https://creativecommons.org/licenses/by/4.0/ - Forward Voltage: 2.0V - Manufacturer Name: Foshan NationStar Optoelectronics - Datasheet URL: https://datasheet.lcsc.com/lcsc/2008201032_Foshan-NationStar-Optoelectronics-NCD0603C1_C84264.pdf - Forward Current: 20mA - Manufacturer Part Number: NCD0603C1 - Part Type: LED **Pins:** - P1 [pin 1] - P2 [pin 2] ### D3 — [SS34](https://www.flux.ai/jecstronic/ss34~8tm.md) - Manufacturer Name: onsemi - Datasheet URL: https://www.onsemi.com/pdf/datasheet/ss39-d.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SS34 - Part Type: Diode **Pins:** - A [pin 2] - K [pin 1] ### D4 — [SS34](https://www.flux.ai/jecstronic/ss34~8tm.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.onsemi.com/pdf/datasheet/ss39-d.pdf - Manufacturer Name: onsemi - Part Type: Diode - Manufacturer Part Number: SS34 **Pins:** - A [pin 2] - K [pin 1] ### D5 — [LED_0603_1608Metric](https://www.flux.ai/adrian95/led06031608metric~990.md) - Manufacturer Name: Foshan NationStar Optoelectronics - Part Type: LED - Current: 20mA - Datasheet URL: https://datasheet.lcsc.com/lcsc/2008201032_Foshan-NationStar-Optoelectronics-NCD0603R1_C84263.pdf - Forward Voltage: 2.0V - Manufacturer Part Number: NCD0603R1 - License: https://creativecommons.org/licenses/by/4.0/ - Color: Red **Pins:** - P1 [pin 1] - P2 [pin 2] ### IC1 — [MT3608](https://www.flux.ai/vasyl/mt3608~9zt.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/2201121530_XI-AN-Aerosemi-Tech-MT3608L_C2932326.pdf - Part Type: Integrated Circuit - Manufacturer Part Number: MT3608L - Manufacturer Name: Aerosemi Technology Co Ltd **Pins:** - EN [pin 4] - FB [pin 3] - GND [pin 2] - IN [pin 5] - NC [pin 6] - SW [pin 1] ### J1 — [JST B2B PH K 01x02 Connector](https://www.flux.ai/jharwinbarrozo/jst-b2b-ph-k-01x02-connector~zu5.md) - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Part Type: Connector - Manufacturer Name: JST Sales America - Manufacturer Part Number: B2B-PH-K-S(LF)(SN) **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### J2 — [DB125-3.81-4P-GN-S](https://www.flux.ai/jharwinbarrozo/db125-3p81-4p-gn-s~l9d.md) - Manufacturer Part Number: DB125-3.81-4P-GN-S - Manufacturer Name: DIBO - Part Type: Connector - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2304061030_DORABO-DB125-3-81-4P-GN-S_C395880.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] - P3 [pin 3] - P4 [pin 4] ### J3 — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal~s4.md) - Part Type: Connector - Manufacturer Name: Ningbo Kangnex Elec - Datasheet URL: https://datasheet.lcsc.com/lcsc/1912251636_Ningbo-Kangnex-Elec-WJ500V-5-08-2P_C8465.pdf - Manufacturer Part Number: WJ500V-5.08-2P **Pins:** - P1 [pin 1] - P2 [pin 2] ### J4 — [USB_Micro](https://www.flux.ai/adrian95/usbmicro~1ej.md) - Part Type: Connector - Manufacturer Part Number: 10118192-0001LF - Datasheet URL: https://datasheet.lcsc.com/lcsc/2304140030_Yuandi-MICRO-03-P1-A1T2_C2682528.pdf **Pins:** - D- - D+ - GND - ID - VBUS ### SW1 — [SW_SPDT](https://www.flux.ai/adrian95/swspdt~q2k.md) - Manufacturer Name: SHOU HAN - Datasheet URL: https://datasheet.lcsc.com/lcsc/2304140030_SHOU-HAN-MSK12C02_C431540.pdf - Manufacturer Part Number: MSK12C02 - Part Type: Switch **Pins:** - A - B - C ### U1 — [RT8059GJ5](https://www.flux.ai/collinsemasi/rt8059gj5~n5.md) - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: SOT-23-5 - Manufacturer Part Number: RT8059GJ5 - Part Type: Integrated Circuit - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_1811100910_Richtek-Tech-RT8059GJ5_C20542.pdf - SPICE Model: * RT8059 Behavioral Model for NGspice * Node order: VIN LX FB EN GND .SUBCKT RT8059 VIN LX FB EN GND * Parameters .PARAM VUVLO=2.3 .PARAM VREF=0.6 .PARAM FSW=1.5MEG .PARAM ILIM=1.5 .PARAM RDSH=0.28 .PARAM RDSL=0.25 * ENABLE Logic B1 N_EN GND V=IF(V(EN)>1.5,1,0) B2 N_UVLO GND V=IF(V(VIN)>VUVLO,1,0) B3 N_ACTIVE GND V=V(N_EN)*V(N_UVLO) * Internal reference VREF N_REF GND DC {VREF} * Error amplifier output (difference between VREF and FB) E_ERR N_ERR GND VALUE={V(N_REF) - V(FB)} * Triangle wave: emulate using time-based function B_TRI N_TRI GND V=0.5+0.5*SIN(2*3.14159*{FSW}*TIME) * PWM comparator B4 N_PWM GND V=IF(V(N_ERR)>V(N_TRI),1,0) * Current sense using a small resistor R_SENSE LX N_ISENSE 0.05 B5 N_ILIM_OK GND V=IF(I(R_SENSE)<ILIM,1,0) * Control signals for switches B6 N_HCTRL GND V=V(N_ACTIVE)*V(N_PWM)*V(N_ILIM_OK) B7 N_LCTRL GND V=V(N_ACTIVE)*(1-V(N_PWM))*V(N_ILIM_OK) * Switch models (control 0-1 V) .model PMOS_SW VSWITCH (RON={RDSH} ROFF=1MEG VON=1 VOFF=0) .model NMOS_SW VSWITCH (RON={RDSL} ROFF=1MEG VON=1 VOFF=0) * High-side switch S1 VIN LX N_HCTRL GND PMOS_SW * Low-side switch S2 GND LX N_LCTRL GND NMOS_SW .ENDS RT8059 **Pins:** - EN [pin 1] - FB [pin 5] - GND [pin 2] - LX [pin 3] - VIN [pin 4] ### U3 — [SY6280](https://www.flux.ai/collinsemasi/sy6280~70.md) - Package or Case Code: SOT-23-5 - Manufacturer Part Number: SY6280A AC - Manufacturer Name: Silergy Corp - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_1810121532_Silergy-Corp-SY6280AAC_C55136.pdf - Part Type: Integrated Circuit **Pins:** - EN [pin 4] - GND [pin 2] - ISET [pin 3] - VIN [pin 5] - VOUT [pin 1] ### U4 — [CN3063 Test](https://www.flux.ai/collinsemasi/cn3063-test~g2.md) - Manufacturer Part Number: CN3063 - Part Type: Integrated Circuit - Manufacturer Name: Seeed - Package or Case Code: SOP-8-EP - Datasheet URL: https://datasheet.lcsc.com/lcsc/1811051510_ShangHai-Consonance-Elec-CN3063_C28078.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 9 [pin 9] - ~CHARG [pin 7] - ~DONE [pin 6] - BAT [pin 5] - FB [pin 8] - GND [pin 3] - ISET [pin 2] - TEMP [pin 1] - VIN [pin 4] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/collinsemasi/brave-power-management-board~ft](https://www.flux.ai/collinsemasi/brave-power-management-board~ft).* --- *Generated from [https://www.flux.ai/collinsemasi/brave-power-management-board~ft](https://www.flux.ai/collinsemasi/brave-power-management-board~ft)*