This grid fault current indicator is an example of a low-power design system that shows customers the most efficient approach for system implementation.

The fault indicator unit uses Renesas’ high-performance RA2 MCU series, which includes a 16-bit SAR ADC, 24-bit sigma-delta ADC, COMP, system control, touch control, super low power, etc. In the data collection unit, the RL78/G13 is a standard function MCU with low power and an abundant lineup for general purpose applications. Bluetooth® is used for communication between the two boards. Combined with Renesas’ high-performance power and analog solutions, this system can minimize idle quiescent current. This helps save power consumption during standby states.

System Benefits:

  • Low quiescent power MCU solutions for optimized efficiency
  • High-performance analog devices for accurate system monitoring



Winning Combinations Interactive Diagram

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4:3 ratio Sheet.1 Sheet.2 Sheet.3 Sheet.4 CN071 CN071 CN071 Shunt Sheet.11 Sheet.12 Sheet.13 Buck-Boost Regulator Buck-Boost Regulator Buck-Boost Regulator Battery Charger Battery Charger Battery Charger Op Amp Op Amp Op Amp Voltage Reference Voltage Reference Voltage Reference Voltage Supervisor Voltage Supervisor Voltage Supervisor LED Driver LED Driver LED Driver Buck Converter Buck Converter Buck Converter Boost Converter Boost Converter Boost Converter Ground (earth) Sheet.40 Sheet.41 Sheet.42 Sheet.43 Sheet.44 Sheet.45 Diode.316 Sheet.47 Sheet.48 Sheet.49 Capacitor Non-polarized Sheet.53 Sheet.54 Battery Li-ion Sheet.56 Sheet.57 Label Text 10pt.70 LI-ION LI-ION Ground (earth).59 Sheet.60 Sheet.61 Sheet.62 Sheet.63 Transformer.64 Line.841 Line.842 Shunt.67 Sheet.68 Sheet.69 Sheet.70 Diode Sheet.72 Sheet.73 Sheet.74 Diode.75 Sheet.76 Sheet.77 Sheet.78 Tumbler Tumbler Tumbler LED LED LED Bluetooth Transformer Transformer Transformer 3.3V 3.3V 3.3V Sheet.101 Power Line 3KV-35KV Power Line 3KV-35KV Power Line 3KV-35KV Sheet.104 Sheet.105 Sheet.107 Sheet.108 Sheet.109 Sheet.110 Sheet.111 Sheet.112 Sheet.114 Sheet.115 Sheet.116 Sheet.117 Sheet.118 Sheet.119 Sheet.120 Sheet.121 Sheet.122 Sheet.123 Sheet.124 Sheet.125 Sheet.126 Sheet.127 Sheet.128 Sheet.129 Sheet.130 Transformer.141 Line.841 Line.842 Sheet.144 Sheet.145 Connector 1.163 Connector 1.163.149 Connector 1.163.150 Connector 1.163.151 Connector 1.163.152 Connector 1.163.153 Transformer Transformer Transformer 4.5V 4.5V 4.5V Sheet.159 MCU MCU MCU 16-bit ADC 16-bit ADC 16-bitADC UART UART UART GPIO GPIO GPIO UART UART UART
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