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please explain what U2 does.
meghajnbarhate

meghajnbarhate

@copilot please explain what U2 does.
1y

copilot

The component with the designator U2U2 is an IR2101, a high-voltage, high-speed power MOSFET and IGBT driver. It is manufactured by Infineon Technologies. This component is typically used to drive the gates of power transistors such as MOSFETs or IGBTs in applications like motor drives, power supplies, and other power control systems.
Key Features of the IR2101:
  • High-Side and Low-Side Driver: It can drive both the high-side and low-side MOSFETs. This is useful when controlling the switching of an H-Bridge, as in your project.
  • Bootstrap Operation: It uses a bootstrap capacitor connected between the VB and VS pins to provide the necessary gate drive voltage for the high-side MOSFET.
  • Under-Voltage Lockout (UVLO): It ensures that the MOSFETs are not turned on until the supply voltage is high enough for reliable operation.
  • Matched Propagation Delays: This helps in minimizing the dead time between high-side and low-side switching, reducing the chances of short-circuiting through the MOSFETs.
Pin Functions:
  • VCC (Pin 1): Supply voltage for the control logic.
  • HIN (Pin 2) and LIN (Pin 3): Logic inputs for the high-side and low-side driver. These determine whether the corresponding MOSFET is on or off.
  • COM (Pin 4): Common ground for the logic and signal terminals.
  • LO (Pin 5): Output to drive the gate of the low-side MOSFET.
  • VS (Pin 6): Return path for the high-side gate drive, usually connected to the source of the high-side MOSFET.
  • HO (Pin 7): Output to drive the gate of the high-side MOSFET.
  • VB (Pin 8): Supply voltage for the high-side driver, derived from the bootstrap capacitor.
In your schematic, U2U2 likely interfaces to control both the high and low-side MOSFETs in an H-Bridge configuration, driving a brushed motor for your FPV RC car project.
1y
Someone is typing...
3
CH4
pin4
Motor+
INPUT1
VCC
SDA
VCC
CH3
Motor-
SCL
pin15
INPUT2
pin14
INPUT1
pin14
INPUT2
VCC
pin6
Push
Push
pin4
CH3
SDA
SCL
4
VCC5V
ENABLE
VCC5vH
VCC5vH
VCC5V
VCC
VCC5V
5
VCC5V
ENABLE
pin15
ENABLE
pin5
2
VCC5vH
Motor+
6
pin6
pin5
VCC5V
2
VCC
4
5
pin10
Motor-
VCC5vH
CH4
6
C6
Capacitance
1uF
C2
Capacitance
1uF
C4
Capacitance
1uF
C7
Capacitance
1uF
C1
Capacitance
1000µF
R5
Resistance
4.7kΩ
Q2
F2
M3
R3
Resistance
100 Ω
Q4
M4
R4
Resistance
100 Ω
R1
Resistance
100 Ω
R2
Resistance
100 Ω
M2
Q3
Q1
R6
Resistance
4.7kΩ
M1
D6
End of Life
D1
D2
U2
D3
D5
End of Life
U4
S1
D4
U1
U3
J2
J1
Q6
End of Life
OLED1

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    H-Bridge ESC + Radio

    H-Bridge ESC + Radio thumbnail
    An all in one programmable board for FPV RC cars. Uses an H bridge to drive a brushed motor.

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    Distributor

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    Digi-Key

    $12.99–$29.37

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