概览

简介

采用超级电容器的供电系统输入电压范围宽,为 3V 到 40V,输出为 2.5A。 可采用超级电容器来取代传统电池(存在电解液泄漏等缺陷)作为后备电源。 在升压模式下,升降压调节器对电容器进行放电的能力可与当今的电子元组件相媲美,有助于充分利用电容电量,节约成本。 当负载较小时,在 100 mA 电流下放电效率可高达 82%。 在大电流(1A 输出)条件下,此设计仍能达到超过 50% 的放电效率。 高性能 LDO、高能效 MOSFET 以及精准的电压监控器,造就了这一款集成式供电解决方案。

系统优势:

  • ISL85403 能够完全利用超级电容器的电量(可利用电压低至 0.3V)
  • ISL88002 电压监控器监视供电状态。
  • ISL9001A 是一款高性能 LDO,具有 ISUPPLY 低以及 PSRR 高的特点。
  • RJK03M5DNS N-MOSFET 支持高能效驱动器和低发热设计。

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4:3 ratio Sheet.232 Sheet.1 Sheet.2 Sheet.3 Sheet.4 CN274 CN274 CN274 MOSFET MOSFET MOSFET Ref. 2.5V Ref. 2.5V Ref. 2.5V IGBT Insulated Gate Bipolar Transistor 1 Sheet.14 Sheet.15 Sheet.17 Sheet.18 IGBT Insulated Gate Bipolar Transistor 1.19 Sheet.20 Sheet.21 Sheet.22 Sheet.23 Sheet.24 Ground (earth) Sheet.26 Sheet.27 Sheet.28 Sheet.29 Resistor - Fixed Resistor - Fixed.31 Diode -Schottky Sheet.33 Sheet.34 Sheet.35 Sheet.36 Sheet.37 Sheet.38 Sheet.39 Input Input.41 Capacitor Non-polarized Sheet.50 Sheet.51 Sheet.52 Sheet.53 Transformer Inductor Iron Core Line.841 Inductor Air Core.212 Sheet.68 Sheet.69 Sheet.70 Sheet.71 Sheet.72 Sheet.73 Sheet.74 Sheet.75 Sheet.76 Line.29 Diode -Schottky.78 Sheet.79 Sheet.80 Sheet.81 Sheet.82 Sheet.83 Sheet.84 Sheet.85 Capacitor Non-polarized .86 Sheet.87 Sheet.88 Sheet.89 Sheet.90 Ground (earth).91 Sheet.92 Sheet.93 Sheet.94 Sheet.95 Input.96 Resistor - Fixed.97 Resistor - Fixed.98 Resistor - Fixed.99 Ground (earth).100 Sheet.101 Sheet.102 Sheet.103 Sheet.104 Resistor - Fixed.105 Ground (earth).106 Sheet.107 Sheet.108 Sheet.109 Sheet.110 Resistor - Fixed.111 Ground (earth).112 Sheet.113 Sheet.114 Sheet.115 Sheet.116 Resistor - Fixed.117 Resistor - Fixed.118 Capacitor Non-polarized .119 Sheet.120 Sheet.121 Sheet.122 Sheet.123 Transformer Inductor Iron Core.124 Line.841 Inductor Air Core.212 Sheet.127 Sheet.128 Sheet.129 Sheet.130 Sheet.131 Sheet.132 Sheet.133 Sheet.134 Sheet.135 Line.29 Diode -Schottky.137 Sheet.138 Sheet.139 Sheet.140 Sheet.141 Sheet.142 Sheet.143 Sheet.144 Ground (earth).145 Sheet.146 Sheet.147 Sheet.148 Sheet.149 Sheet.150 Sheet.151 Sheet.155 Sheet.156 Sheet.157 Sheet.158 Sheet.164 Sheet.165 Sheet.166 Sheet.167 Sheet.168 Sheet.169 Sheet.170 Sheet.171 Sheet.172 Sheet.173 Sheet.174 Sheet.175 Sheet.180 Sheet.182 3.3V/2.5A(max) 3.3V/2.5A(max) 3.3V/2.5A(max) To charge the SuperCap To charge the SuperCap To charge the SuperCap EDLC EDLC EDLC Vin (13V) Vin (13V) Vin (13V) Sheet.191 Sheet.192 Sheet.193 1.8V/0.3A (max) 1.8V/0.3A (max) 1.8V/0.3A(max) Sheet.195 Sheet.196 Sheet.197 Sheet.198 Sheet.200 Sheet.202 Sheet.209 To MCU ACK To MCU ACK To MCU ACK Connector 1.169 Connector 1.169.223 Connector 1.169.224 Connector 1.169.225 Connector 1.169.226 Connector 1.169.227 Connector 1.169.228 Connector 1.169.229 Connector 1.169.230 Connector 1.169.231 Connector 1.169.233 N-Channel MOSFET Sheet.235 Sheet.236 Sheet.237 Sheet.238 Sheet.239 Sheet.240 Sheet.241 Sheet.242 Sheet.243 Sheet.244 Sheet.245 Sheet.246 Sheet.247 Sheet.248 Connect.50 Sheet.250 Sheet.251 Sheet.252 Connector 1.169.253 Connector 1.169.254 Connector 1.169.255 Connector 1.169.256 Sheet.257 Connector 1.169.258 Connector 1.169.259 Connector 1.169.260 Vin (13V) Vin (13V) Vin (13V) Connector 1.169.262 Sheet.263 LDO LDO LDO VOUT VOUT VOUT VIN VIN VIN EN EN EN Sheet.264 Buck-Boost Regulator Buck-Boost Regulator Buck-Boost Regulator LGATE LGATE LGATE VCC VCC VCC EXT-BOOST EXT-BOOST EXT-BOOST PHASE PHASE PHASE AUXVCC AUXVCC AUXVCC VIN VIN VIN Sheet.265 Voltage Supervisor Voltage Supervisor Voltage Supervisor VDD VDD VDD RST RST RST
Exiting Interactive Block Diagram