Product specification

Standard edition

Physical characteristics

• width: 50.0 mm
• height: 130 mm
• thickness: 30 mm
• weight: 350 g

Drawings and 3D models

• Drawing
• 3D model

Middle Voltage edition

Physical characteristics

• width: 50.0 mm
• height: 130 mm
• thickness: 44 mm
• weight: 360 g

Drawings and 3D models

• Drawing
• 3D model

General specification

Parameter	value
Switching frequency	20 kHz
Maximum motor magnetic field speed	2 kHz
Minimum motor phase inductance	2.5 μH

note

Minimum motor inductance is inductance of one winding (half of inductance between motor terminals). Motor inductance usually drops with increasing current due to saturation of motor magnetic circuit. This effect must be also considered when evaluating motor minimum inductance.

warning

If motor inductance is lower than specified, controller lifetime could be significantly reduced (even orders of magnitude). Low inductance increases electrolytic capacitors ripple current thus their temperature and lifetime.

Electrical specification

Input voltage rating

Maximum input voltage

Voltage variant	Transistors	Maximum working voltage	Full limitation voltage	Critical error voltage (max)	Li-ion battery nominal voltage	Li-ion series cells count
10	100 V	84 V	92 V	95 V	72.0 V	20S
15	150 V	118 V	135 V	145 V	100.8 V	28S

Minimum input (supply) voltage

Voltage variant	Transistors	Minimum working voltage	Threshold voltage	Critical error voltage (min)
10	100 V	24 V	22 V	15 V
15	150 V	24 V	22 V	15 V

Terms explanation:

• The controller delivers maximal current without limitation if the battery voltage is below the Maximum working voltage and above the Minimum working voltage.
• The output current is proportionally limited if the battery voltage is above the Maximum working voltage and below the Full limitation voltage. This is indicated by the "Overvoltage" status.
• The output current is fully limited if the battery voltage is above the Full limitation voltage and below the Critical error voltage (max). This state is indicated by the "Overvoltage" status. The controller automatically recovers if the voltage falls below the Full limitation voltage.
• The controller falls into critical error if the battery voltage exceeds the Critical error voltage (max). The controller can be permanently damaged in this region and does not recover automatically, it needs to be turned OFF and ON again.
• The output current is proportionally limited if the battery voltage is below the Minimum working voltage and above the Threshold voltage. This is indicated by the "Undervoltage" status.
• The output current is fully limited if the battery voltage is below the Threshold voltage and above the Critical error voltage (min). This state is indicated by the "Undervoltage" status. The controller automatically recovers if the voltage rises above the Threshold voltage.
• The controller falls into critical error if the battery voltage falls below the Critical error voltage (min). The controller does not recover automatically, it needs to be turned OFF and ON again.

DC bus capacitance

Voltage variant	Capacitance [uF]
10	738
15	738

Output current and power rating

VECTOR driver

Nominal (continuous) performance *	12dxa1020	12dxa1530
maximum continuous power dissipation (60°C heatsink)	102 W	110 W
nominal power (for maximum input voltage)	10.2 kW @ 84 V	10.7 kW @ 118 V
nominal phase current	140 A (100 Arms)	105 A (74 Arms)
battery current	122 A	92 A

* Placing controller on infinite heatsink with 60°C temperature, it will deliver nominal (continuous) performance.

Assembly variant *	Phase current	Output power	Time to limitation
12dxa1020	200 A (141 Arms)	14.5 kW @ 84 V (dP = 200 W)	35 s
12dxa1020	175 A (124 Arms)	12.7 kW @ 84 V (dP = 155 W)	100 s
12dxa1530	200 A (141 Arms)	20.4 kW @ 118 V (dP = 330 W)	10 s
12dxa1530	160 A (113 Arms)	16.3 kW @ 118 V (dP = 225 W)	90 s

* Starting at 27°C, the controller will deliver peak performance for indicated time. Then, derating will progress until thermal equilibrium is found.

BLDC driver

Nominal (continuous) performance *	12dxa1020	12dxa1530
maximum continuous power dissipation (60°C heatsink)	102 W	110 W
nominal power (for maximum input voltage)	12 kW @ 84 V	12.6 kW @ 118 V
nominal output current	143 A	107 A
battery current	144 A	109 A

* Placing controller on infinite heatsink with 60°C temperature, it will deliver nominal (continuous) performance.

Assembly variant *	Phase current	Output power	Time to limitation
12dxa1020	200 A	16.8 kW @ 84 V (dP = 187 W)	35 s
12dxa1020	175 A	14.7 kW @ 84 V (dP = 147 W)	100 s
12dxa1530	200 A	23.6 kW @ 118 V (dP = 270 W)	10 s
12dxa1530	160 A	20 kW @ 118 V (dP = 225 W)	90 s

* Starting at 27°C, the controller will deliver peak performance for indicated time. Then, derating will progress until thermal equilibrium is found.

Fixed phase current limits	12dxa1020	12dxa1530
RMS current limit 1/	140 Arms	140 Arms
Burst current limit 2/	200 A	300 A

1/ Irrespective of the actual temperature conditions, the immediate output current will be clamped to these values by the I2R limiter in the order of seconds. When motor is rotating, power losses are divided between all three phases and the controller is able to supply higher per-phase current amplitude. When the device is super-cooled from outside, this is the maximum theoretical continuous RMS current.

2/ This current can be delivered in short bursts and reflects the current measurement range of every variant. The sufficient margin for current ripple of the switching waveform must be accomodated within the range. Any higher current triggers DTC / active short circuit protection.

Measurement accuracy

Measurement	Accuracy
Phase current	±5 %
DC current	±5 %
Input DC voltage	±5 %
GPIO input voltage	±2 %

Thermal specification

Maximum power losses

Controller maximum temperature is internally limited to approximately 100°C. The maximum output current (or maximum power losses) for this limiting temperature is given by the temperature of the heatsink. Dependencies are given in the following graphs.

info

All the data in the graphs below are valid for VECTOR control algorithm.

Example on how to get heatsink thermal resistance

This example with AX controller shows on how to get required heatsink thermal resistance based on the required phase current amplitude and surrounding temperature.

1. Define the required phase current ($I_{phase} = 50$ A for the example)
2. Get maximum permissible heatsink temperature from the graph "Dependency of heatsink temperature on phase current amplitude" ($T_{hs} = 57°C$ from the example)
3. Put the temperature value to the graph "Dependency of heatsink temperature on power losses"
4. Get required power that needs to be dissipated by the heatsink ($P = 33$ W from the example)

5. Define the ambient operating temperature ($T_{amb} = 25$ °C for the example)
6. Calculate required thermal resistance of the heatsink by using this equation $R_{hs}=\dfrac{T_{hs} - T_{amb}}{P} =\dfrac{57 - 25}{33} \approx 0.97$ °C/W
7. You can design your heatsink now!

Power losses calculator

Controller power losses are affected by the two main factors: motor phase current and DC link voltage. The following calculator can be used for rough estimate (~10% accuracy) of power losses in the controller. Calculation is valid for VECTOR driver.

Controller variant:12???102012???1530DC link voltage (V):Phase current amplitude - Iref (A):

Power losses:

Environmental specification

Parameter	Value
Operation temperature (no limitation*)	-20°C .. 60°C
Operation temperature (with power limitation*)	-20°C .. 85°C
Humidity	5 % .. 85 % (not tested)
Ingress of dust and water (internal electronics)	IP67 - electronic is potted in silicone
Ingress of dust and water (power connectors)	IP40 - connectors connected
Ingress of dust and water (signal connector, without sealing)	IP10
Ingress of dust and water (signal connector, with sealing)	IP55 - It withstands 10 minutes 10 cm underwaterr.

*power output limitation depends on cooling, not only on ambient temperature