Renesas RA6 Series User Manual

Renesas RA Family MCK-RA6T2 User's Manual
R12UZ0091EJ0100 Rev 1.00 Page 23 of 38
August 3, 2021
5.1.4 Output voltage detection circuit
The INV-BRD has the circuit that inputs bus voltage and three-phase output voltage (U, V and W phase) into
the AD pin of the microcontroller through resistive voltage divider. Relation between the three-phase output
voltage, the bus voltage and the detection voltage is described by the below equation (3).
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
󰇠


  

 
 
󰇟

󰇠
󰇛󰇜
10k W
470 W
0.1mF
V
U
Vin Vout
V
V
V
W
V
BUS
Figure 5-4 Output voltage detection circuit
5.1.5 Voltage generation circuit
On the INV-BRD, the gate driver voltage ("+12V" in the schematic) is generated from the 5V power supply
("+5V" in the schematic) with the boost converter. If 5V is not supplied from the CPU board, the buck
converter on the INV-BRD generates 5V from the voltage input (12 to 48V) from the DC jack or terminal
block.
Table 5-1 Voltage generation
Item
Input voltage
[V]
Output voltage
(TYP.) [V]
Output current
(Max) [A]
5V generation
12~48
5
0.6
Gate driver voltage
generation
5
11.4
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Renesas RA6 Series Specifications

General

Brand	Renesas
Model	RA6 Series
Category	Motherboard
Language	English