单板智能电源方案设计模块布局
本方案采用精简紧凑的架构，支持两路宽电压范围输入电源：太阳能电池板与交直流适配器。
LTC4416 电源路径控制器与 LTC4162 降压型充电器协同工作，智能管控各路电源输入。该配置可高效为各类锂离子电池充电，最高支持 4 串 1 并（4S1P） 的电池组。
图 1 单板设计模块框图
如图 1 所示，系统采用 LTC3115‑1 升降压开关稳压器，动态调节负载输出电压，稳定输出 5 V/2 A；同时由 LTC4162 实时监测电池充电状态。
器件选型与设计布局
基于上述模块架构，选用三款核心器件优化系统性能。选型目标为：提升系统效率、降低功率损耗、缩减 PCB 布板面积、控制整体成本，其电路原理图布局如图 2 所示。
- 基于 LTC4416 实现双路电源输入
- 智能电源路径管理
- 升降压开关稳压器
图 2 单板电路原理图布局
相关型号
| DigiKey 型号 | 原厂型号 |
|---|---|
| 505-LTC3115EDHD-1#PBF-ND | LTC3115EDHD-1#PBF |
| 505-LTC3115EDHD-1#TRPBFTR-ND,505-LTC3115EDHD-1#TRPBFCT-ND,505-LTC3115EDHD-1#TRPBFDKR-ND | LTC3115EDHD-1#TRPBF |
| LTC3115EFE-1#TRPBFTR-ND,LTC3115EFE-1#TRPBFCT-ND,LTC3115EFE-1#TRPBFDKR-ND | LTC3115EFE-1#TRPBF |
| 505-LTC3115EFE-1#PBF-ND | LTC3115EFE-1#PBF |
| 505-LTC3115IDHD-1#TRPBFTR-ND,505-LTC3115IDHD-1#TRPBFCT-ND,505-LTC3115IDHD-1#TRPBFDKR-ND | LTC3115IDHD-1#TRPBF |
| 505-LTC3115IDHD-1#PBF-ND | LTC3115IDHD-1#PBF |
| 505-LTC3115IFE-1#PBF-ND | LTC3115IFE-1#PBF |
| 505-LTC3115EDHD-2#PBF-ND | LTC3115EDHD-2#PBF |
| 505-LTC3115EFE-2#PBF-ND | LTC3115EFE-2#PBF |
| 505-LTC3115IFE-1#TRPBFTR-ND,505-LTC3115IFE-1#TRPBFCT-ND,505-LTC3115IFE-1#TRPBFDKR-ND | LTC3115IFE-1#TRPBF |
| LTC3115IFE-2#PBF-ND | LTC3115IFE-2#PBF |
| 505-LTC3115HFE-1#PBF-ND | LTC3115HFE-1#PBF |
| 505-LTC3115IDHD-2#PBF-ND | LTC3115IDHD-2#PBF |
| 161-LTC3115MPFE-1#PBF-ND | LTC3115MPFE-1#PBF |
| LTC3115MPFE-2#PBF-ND | LTC3115MPFE-2#PBF |
| 505-LTC3115EDHD-2#TRPBFTR-ND | LTC3115EDHD-2#TRPBF |
| 505-LTC3115HFE-2#PBF-ND | LTC3115HFE-2#PBF |
| 161-LTC3115IDHD-1#WPBF-ND | LTC3115IDHD-1#WPBF |
| 505-LTC3115EFE-2#TRPBFTR-ND | LTC3115EFE-2#TRPBF |
| 161-LTC3115IDHD-1#WTRPBFTR-ND | LTC3115IDHD-1#WTRPBF |
| LTC3115IFE-2#TRPBF-ND | LTC3115IFE-2#TRPBF |
| LTC3115HFE-1#TRPBF-ND | LTC3115HFE-1#TRPBF |
| LTC3115HFE-2#TRPBF-ND | LTC3115HFE-2#TRPBF |
| LTC3115IDHD-2#TRPBF-ND | LTC3115IDHD-2#TRPBF |
| LTC3115MPFE-1#TRPBF-ND | LTC3115MPFE-1#TRPBF |
| 505-LTC4162EUFD-LAD#TRPBFTR-ND,505-LTC4162EUFD-LAD#TRPBFCT-ND,505-LTC4162EUFD-LAD#TRPBFDKR-ND | LTC4162EUFD-LAD#TRPBF |
| 505-LTC4162EUFD-FAD#PBF-ND | LTC4162EUFD-FAD#PBF |
| 505-LTC4162EUFD-LAD#PBF-ND | LTC4162EUFD-LAD#PBF |
| 505-LTC4162EUFD-L42#TRPBFTR-ND,505-LTC4162EUFD-L42#TRPBFCT-ND,505-LTC4162EUFD-L42#TRPBFDKR-ND | LTC4162EUFD-L42#TRPBF |
| 505-LTC4162EUFD-SAD#PBF-ND | LTC4162EUFD-SAD#PBF |
| 505-LTC4162EUFD-SADM#PBF-ND | LTC4162EUFD-SADM#PBF |
| 505-LTC4162EUFD-LADM#PBF-ND | LTC4162EUFD-LADM#PBF |
| 505-LTC4162IUFD-FAD#PBF-ND | LTC4162IUFD-FAD#PBF |
| 505-LTC4162IUFD-SADM#PBF-ND | LTC4162IUFD-SADM#PBF |
| 505-LTC4162IUFD-LAD#PBF-ND | LTC4162IUFD-LAD#PBF |
| 505-LTC4162EUFD-L42#PBF-ND | LTC4162EUFD-L42#PBF |
| 505-LTC4162EUFD-L42M#PBF-ND | LTC4162EUFD-L42M#PBF |
| 505-LTC4162EUFD-L41#PBF-ND | LTC4162EUFD-L41#PBF |
| LTC4162EUFD-SSTM#PBF-ND | LTC4162EUFD-SSTM#PBF |
| LTC4162IUFD-FADM#PBF-ND | LTC4162IUFD-FADM#PBF |
| LTC4162IUFD-SSTM#PBF-ND | LTC4162IUFD-SSTM#PBF |
| LTC4162EUFD-L40#PBF-ND | LTC4162EUFD-L40#PBF |
| LTC4162EUFD-L40M#PBF-ND | LTC4162EUFD-L40M#PBF |
| LTC4162EUFD-FFSM#PBF-ND | LTC4162EUFD-FFSM#PBF |
| LTC4162EUFD-L41M#PBF-ND | LTC4162EUFD-L41M#PBF |
| 505-LTC4162EUFD-FSTM#PBF-ND | LTC4162EUFD-FSTM#PBF |
| LTC4162EUFD-FST#PBF-ND | LTC4162EUFD-FST#PBF |
| LTC4162EUFD-FFS#PBF-ND | LTC4162EUFD-FFS#PBF |
| LTC4162IUFD-SST#PBF-ND | LTC4162IUFD-SST#PBF |
| 505-LTC4162IUFD-L42#PBF-ND | LTC4162IUFD-L42#PBF |
| LTC4162IUFD-L40#PBF-ND | LTC4162IUFD-L40#PBF |
| LTC4162IUFD-L40M#PBF-ND | LTC4162IUFD-L40M#PBF |
| LTC4162IUFD-FFSM#PBF-ND | LTC4162IUFD-FFSM#PBF |
| LTC4162IUFD-L41M#PBF-ND | LTC4162IUFD-L41M#PBF |
| 505-LTC4162IUFD-L41#PBF-ND | LTC4162IUFD-L41#PBF |
| LTC4162IUFD-FSTM#PBF-ND | LTC4162IUFD-FSTM#PBF |
| 505-LTC4162IUFD-L42M#PBF-ND | LTC4162IUFD-L42M#PBF |
| LTC4162IUFD-FFS#PBF-ND | LTC4162IUFD-FFS#PBF |
| 505-LTC4162IUFD-LAD#TRPBFTR-ND | LTC4162IUFD-LAD#TRPBF |
| 505-LTC4162EUFD-FADM#TRPBFTR-ND,505-LTC4162EUFD-FADM#TRPBFCT-ND,505-LTC4162EUFD-FADM#TRPBFDKR-ND | LTC4162EUFD-FADM#TRPBF |
| 505-LTC4162IUFD-SAD#PBF-ND | LTC4162IUFD-SAD#PBF |
| 505-LTC4162IUFD-LADM#PBF-ND | LTC4162IUFD-LADM#PBF |
| LTC4162IUFD-FST#PBF-ND | LTC4162IUFD-FST#PBF |
| LTC4162EUFD-FADM#PBF-ND | LTC4162EUFD-FADM#PBF |
| LTC4162EUFD-SST#PBF-ND | LTC4162EUFD-SST#PBF |
| LTC4162EUFD-FAD#TRPBF-ND | LTC4162EUFD-FAD#TRPBF |
| LTC4162EUFD-FFS#TRPBF-ND | LTC4162EUFD-FFS#TRPBF |
| LTC4162EUFD-FFSM#TRPBF-ND | LTC4162EUFD-FFSM#TRPBF |
| LTC4162EUFD-FST#TRPBF-ND | LTC4162EUFD-FST#TRPBF |
| LTC4162EUFD-FSTM#TRPBF-ND | LTC4162EUFD-FSTM#TRPBF |
| LTC4162EUFD-L40#TRPBF-ND | LTC4162EUFD-L40#TRPBF |
| LTC4162EUFD-L40M#TRPBF-ND | LTC4162EUFD-L40M#TRPBF |
| LTC4162EUFD-L41#TRPBF-ND | LTC4162EUFD-L41#TRPBF |
| LTC4162EUFD-L41M#TRPBF-ND | LTC4162EUFD-L41M#TRPBF |
| LTC4162EUFD-L42M#TRPBF-ND | LTC4162EUFD-L42M#TRPBF |
| LTC4162EUFD-LADM#TRPBF-ND | LTC4162EUFD-LADM#TRPBF |
| LTC4162EUFD-SAD#TRPBF-ND | LTC4162EUFD-SAD#TRPBF |
| LTC4162EUFD-SADM#TRPBF-ND | LTC4162EUFD-SADM#TRPBF |
| LTC4162EUFD-SST#TRPBF-ND | LTC4162EUFD-SST#TRPBF |
| LTC4162EUFD-SSTM#TRPBF-ND | LTC4162EUFD-SSTM#TRPBF |
| LTC4162IUFD-FAD#TRPBF-ND | LTC4162IUFD-FAD#TRPBF |
| LTC4162IUFD-FADM#TRPBF-ND | LTC4162IUFD-FADM#TRPBF |
| LTC4162IUFD-FFS#TRPBF-ND | LTC4162IUFD-FFS#TRPBF |
| LTC4162IUFD-FFSM#TRPBF-ND | LTC4162IUFD-FFSM#TRPBF |
| LTC4162IUFD-FST#TRPBF-ND | LTC4162IUFD-FST#TRPBF |
| LTC4162IUFD-FSTM#TRPBF-ND | LTC4162IUFD-FSTM#TRPBF |
| LTC4162IUFD-L40#TRPBF-ND | LTC4162IUFD-L40#TRPBF |
| LTC4162IUFD-L40M#TRPBF-ND | LTC4162IUFD-L40M#TRPBF |
| LTC4162IUFD-L41#TRPBF-ND | LTC4162IUFD-L41#TRPBF |
| LTC4162IUFD-L41M#TRPBF-ND | LTC4162IUFD-L41M#TRPBF |
| LTC4162IUFD-L42#TRPBF-ND | LTC4162IUFD-L42#TRPBF |
| LTC4162IUFD-L42M#TRPBF-ND | LTC4162IUFD-L42M#TRPBF |
| LTC4162IUFD-LADM#TRPBF-ND | LTC4162IUFD-LADM#TRPBF |
| LTC4162IUFD-SAD#TRPBF-ND | LTC4162IUFD-SAD#TRPBF |
| LTC4162IUFD-SADM#TRPBF-ND | LTC4162IUFD-SADM#TRPBF |
| LTC4162IUFD-SST#TRPBF-ND | LTC4162IUFD-SST#TRPBF |
| LTC4162IUFD-SSTM#TRPBF-ND | LTC4162IUFD-SSTM#TRPBF |
| 505-LTC4416EMS-1#PBF-ND | LTC4416EMS-1#PBF |
| 505-LTC4416EMS#TRPBFTR-ND,505-LTC4416EMS#TRPBFCT-ND,505-LTC4416EMS#TRPBFDKR-ND | LTC4416EMS#TRPBF |
| 505-LTC4416EMS#PBF-ND | LTC4416EMS#PBF |
| 505-LTC4416IMS#PBF-ND | LTC4416IMS#PBF |
| 505-LTC4416IMS-1#PBF-ND | LTC4416IMS-1#PBF |
| 505-LTC4416IMS#TRPBFTR-ND,505-LTC4416IMS#TRPBFCT-ND,505-LTC4416IMS#TRPBFDKR-ND | LTC4416IMS#TRPBF |
| LTC4416EMS-1#TRPBFTR-ND,LTC4416EMS-1#TRPBFCT-ND,LTC4416EMS-1#TRPBFDKR-ND | LTC4416EMS-1#TRPBF |
| 505-LTC4416IMS-1#TRPBFTR-ND | LTC4416IMS-1#TRPBF |
| 161-LTC4416IMS-1-ND | LTC4416IMS-1 |
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