motec

Part No: #41213

OVERVIEW

MoTeC's DHB Dual Half Bridge 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. Application examples:

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

FEATURES

Contains two high current Half Bridge outputs
Can drive a single motor in two directions, or can drive two motors in a single direction
Capable of high speed PWM which can be used for speed control of motors and for other purposes Note: The controlling device must perform the control function, such as PWM speed control, direction control or servo control
Fully sealed case suitable for under bonnet mounting

BASIC SPECIFICATIONS

Electrical

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
Input impedance
- 10 kΩ pull-up to 5 V

Physical

Dimensions: 31.4 x 38.0 x 14.0 mm
Weight: 60 grams (plus connectors)
Connectors
- Power: 2 pin DTP Male
- Outputs: 2 pin DTP Female
- Inputs: 2 pin DTM Male
Maximum case temperature 125 °C

Truth Table

Input	Output
Low	Switched to Bat -
High	Switched to Bat +

COMPATIBILITY

All MoTeC ECUs
All MoTeC Dash Loggers and Enclosed Loggers

CONNECTORS AND PINOUT

Refer to Dimensions for Connector Location

Connector 1 _ Power 2 pin DTP connector. Mating connector # 68104
Pin	Name	Function
1	Bat -	Battery Negative
2	Bat +	Battery Positive

Connector 1 _ Power

2 pin DTP connector. Mating connector # 68104

Pin

Name

Function

1

Bat -

Battery Negative

2

Bat +

Battery Positive

Connector 2 _ Outputs 2 pin DTP connector. Mating connector # 68103
Pin	Name	Function
1	Out 1	Output 1
2	Out 2	Output 2

Connector 2 _ Outputs

2 pin DTP connector. Mating connector # 68103

Pin

Name

Function

1

Out 1

Output 1

2

Out 2

Output 2

Connector 3 _ Inputs 2 pin DTM connector. Mating connector # 68051
Pin	Name	Function
1	In 1	Input 1
2	In 2	Input 2

Connector 3 _ Inputs

2 pin DTM connector. Mating connector # 68051

Pin

Name

Function

1

In 1

Input 1

2

In 2

Input 2

WIRING

Connect to the auxiliary outputs of any MoTeC ECU or Dash/Enclosed Logger.
Both Bat– and Bat+ wires rated at motor current.
Drive Single Motor in Two Directions
Speed control: PWM either Input1 or Input 2

Input 1 Input 2 Motor

Low Low OFF

Low High Direction 1

High Low Direction 2

High High OFF

Drive Two Grounded Motors in a Single Direction
Speed control: PWM Input, High Duty = Fast

Input 1 Motor 1

Low OFF

High ON

Input 2 Motor 2

Low OFF

High ON

Drive Two Powered Motors in a Single Direction
Speed control: PWM Input, Low Duty = Fast

Input 1 Motor 1

Low ON

High OFF

Input 2 Motor 2

Low ON

High OFF

Input 1	Input 2	Motor
Low	Low	OFF
Low	High	Direction 1
High	Low	Direction 2
High	High	OFF

Input 1	Motor 1
Low	OFF
High	ON

Input 2	Motor 2
Low	OFF
High	ON

Input 1	Motor 1
Low	ON
High	OFF

Input 2	Motor 2
Low	ON
High	OFF

DIMENSIONS

Measurements in mm

PURCHASING

If you are interested in purchasing this product contact an Authorised MoTeC Dealer.

DOWNLOADS

Useful Links

This page shows the relevant downloads for this product. For a full selection of MoTeCs downloads visit the Downloads page.

To keep up-to-date with the latest webinars or software you can subscribe to our mailing lists and we will send you a message when new items are released.

To sign-up for a mailing list click the "SIGN-UP: WEBINAR NEWS" or "SIGN-UP: SOFTWARE RELEASE" button below.