Silabs公司的EFP01能量友好电源管理集成电路(PMIC)是极端灵活高效率多输出电源管理IC，提供完整系统电源和对器件EFM32和EFR32器件进行电池库仑计数. EFP01工作电压0.8V到5.5V，而静态电流低到250nA. EFP01支持多种电池包括单个碱性(Zn/MnO2)电池，锌碳或锂-二硫化铁(Li/FeS2)电池或NiMH/NiCd充电电
池(0.8V-1.8V)，两个碱性电池,
锌碳或锂-二硫化铁(Li/FeS2)电池或NiMH/NiCd充电电池(1.6V-3.6V)，单个锂电池(Li/MnO2)(1.8V-3.2V)，单个锂亚硫酰氯(Li/SOCl2)电池( 3.0 - 3.65 V)，单个锂离子/锂聚合物(LiCoO2)可充电电池(2.7-4.35 V)，单个磷酸铁锂充电电池(2.5-3.65 V)以及USB(<5.5V).EFP01提供四种电源：一个降压/升压DC/DC转换器，一个仅降压DC/DC转换器+LDO，一个LDO和一个开关输出，其效率高达94%.主要用在IoT传感器和终端设备，计量仪表，家庭和建筑物自动化与安全，卫生与健康，可穿戴，智能附件，人工接口设备等.本文介绍了EFP01能量友好特性，框图，多种应用框图，以及评估板EFP0111 EVK主要特性，框图和硬件布局图，多种参考电路图.
The EFP01 Energy Friendly Power Management IC (PMIC) is an
extremely flexible, highly efficient, multi-output power management IC,
providing complete system power and primary cell battery Coulomb
counting for EFM32 and EFR32 devices. The EFP01 can operate over a wide  input voltage range (0.8 to 5.5 V) with quiescent current as low as 250 nA.
EFP01 can be configured to support the following battery types:
•Single alkaline (Zn/MnO2), zinc-carbon or lithium iron-disulphide
(Li/FeS2) primary cells, or NiMH/NiCd rechargeable cells (0.8 to 1.8 V)
•Dual alkaline, zinc-carbon or lithium iron-disulphide (Li/FeS2) primary  cells, or NiMH/NiCd rechargeable cells (1.6 to 3.6 V)
•Single lithium (Li/MnO2) primary cells (1.8 to 3.2 V)
•Single lithium thionyl chloride (Li/SOCl2) primary cell (3.0 to 3.65 V)•Single lithium ion/lithium polymer (typically LiCoO2) rechargeable
batteries (2.7 to 4.35 V)
•Single lithium iron phosphate (LiFePO4) rechargeable battery (2.5 to
3.65 V)
•USB (< 5.5 V)
EFP01能量友好特性:
•Provides 4 supply outputs:
•One Buck/Boost DC-DC Converter
•One Buck-only DC-DC Converter + LDO
•One LDO
•One Switched Output
•Up to 94% efficiency
EFP01应用:
•IoT Sensors and End Devices
•Metering
•Home and Building Automation and Security
Silabs EFP01能量友好PMIC解决方案
•Health and Wellness
•Wearables
•Smart Accessories
•Human Interface Devices
Feature List
The EFP01 highlighted features are listed below.
•VOA
•Output Voltage: 1.7 V to 5.2 V
•DCDC A can be configured in Buck/Boost, Buck-only, or Boost-only •DCDC A output be combined with the VOC linear regulator for more  efficient regulation as the input voltage approaches the output voltage •Firmware-programmable switched output (VOA_SW) allows complete  powerdown of high leakage external circuitry in low power modes •VOB
•Output Voltage:
•0.8 V to 3.3 V (EFP0109/EFP0111)
•0.8 V to 1.255 V (EFP0104/EFP0108)
•DCDC B can be used only in Buck configuration
•Dedicated internal linear regulator in parallel provides more efficient  regulation as the input voltage approaches the output voltage •VOC
•Output Voltage: 1.7 V to 3.3 V •Linear regulator only
•Can be used either to create an independent third output supply or in  conjunction with DCDC A
•Coulomb Counter
•Lossless (i.e. no sense resistor) measurement of charge into the load •Communication & Control
•Fully configurable I2C
•Direct Mode supports fast transitions between energy modes
•IRQ pin to notify host processor
•Ultra-low Quiescent Current
•150 nA with no outputs enabled
•300 nA with a single output enabled
•+125 nA for each additional output enabled
•Safety
•Programmable inrush current
•Short-circuit tolerant outputs
•Under-voltage lock-out (UVLO) circuitry holds device in lowest power  reset state when VDDB is below 1.2 V
characterise
•Over-temperature monitoring and IRQ assertion
•Wide Operating Range
•0.8 V to 5.5 V input power supply
•-40 to 100 C junction temperature
•QFN20 3x3 mm Package
图1. EFP01框图图2. EFP01降压/升压配置图
图3. EFP01有线升压配置图
图4. EFP01单电池升压配置图
图5. EFP01升压自举配置图
评估板EFP0111 EVK
The EFP0111 Evaluation Kit is an excellent way to evaluate and
characterise the EFP01 Energy Friendly Power Management IC (PMIC) in  the Boost Bootstrap configuration.
The EFP01 is an extremely flexible, highly efficient, multi-output power  management IC
with integrated Coulomb counter for lossless charge measurements. The kit contains an EFP0111 Evaluation Board (BRD8100B), which features  an EFP0111 in the Boost Bootstrap configuration. The input and output  power rails of the EFP01 are exposed on
terminal blocks and test points making it easy to evaluate and
characterize the EFP01 with external hardware. The board can be plugged  into a computer using the USB Micro-
B connector for conveniently controlling the EFP01s register settings  and reading back data. The EFP0111 Evaluation Board is supported in
Simplicity Studio and the EFP Configuration Tool.
The EFP0111 Evaluation Kit (OPN: SLEVK1000B) is an excellent starting  point to evaluate and characterize the EFP01 Energy Friendly Power
Management IC (PMIC) in the Boost Bootstrap configuration. The EFP01 is  an extremely flexible, highly efficient, multi-output power management IC  with integrated Coulomb counter for lossless charge measurements.
The kit contains an EFP0111 Evaluation Board (BRD8100B), which
features an EFP0111 in the Boost Bootstrap configuration. The input and  output power rails of the EFP01 are exposed on terminal blocks and test  points instead of powering the host MCU, making it

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