Dual Half Bridge
Actuators are devices, usually connected to an auxiliary output on the ECU, that can perform functions such as idle speed and boost control. They are normally managed by the ECU via a Pulse Width Modulated...
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Actuators are devices, usually connected to an auxiliary output on the ECU, that can perform functions such as idle speed and boost control. They are normally managed by the ECU via a Pulse Width Modulated (PWM) signal. This signal can be varied from 0% to 100% to control the actuator's performance.
Dual Half Bridge
The Dual Half Bridge (DHB) is a high current amplifier which allows low current auxiliary outputs to drive high current loads such as motors. It contains two high current half bridge outputs enabling it to drive a single motor in two directions, or drive two motors in a single direction. It is also capable of high speed PWM, which can be used for speed control of motors and for other purposes.
The DHB connects to any auxiliary output of a MoTeC ECU or Dash Logger, which performs the control function, such as PWM speed control, direction control or servo control.
The fully sealed case makes the DHB suitable for under bonnet mounting.
- Servo motor e.g. active wing control, boat trim control, inlet runner length control, variable valve lift.
- Motor speed control e.g. electric water pump, thermo fan, fuel pump.
- Solenoid control.
- All MoTeC ECUs
- All MoTeC Dash Loggers
- Output current
- Continuous DC current 20 A (total)
- Peak surge current 500 A
- Max. operating frequency 50 kHz @ 28 V
- Switching delay, typical
- High to low 6.5 µsec
- Low to high 6.5 µsec
- Input threshold, typical
- High 2.8 V
- Low 2.1 V
- Operating voltage
- 7.0 V to 55 V with under voltage lockout
- Size 31.4 x 38.0 x 14.0 mm
- Weight approximately 60 grams plus connectors
- Power: 2 pin DTP Male
- Motor /Output: 2 pin DTP Female
- Input: 2 pin DTM Male
- Maximum case temperature 125 °C
This boost control valve allows pressure to bled away from the wastegate, which allows the ECU to control the boost pressure of a turbocharged engine. The valve uses a duty cycle controlled shuttle to ensure that the standard wastegate pressure is still used to control boost, with the valve bleeding off the rest to achieve the desired boost level.
The boost control valve is compatible with all MoTeC ECUs, connecting to an auxiliary output on the ECU, which uses PWM to control the amount of pressure bleed off.