Vehicle Power Supply-Shenzhen VAPEL Power Supply Technology Co.,Ltd.

Current Location:Home > Products & Solutions > Vehicle Power Supply > 12kW On-Board DC/DC Power Supply

12kW On-Board DC/DC Power Supply

This product operates within an input voltage range of 450–900 Vdc, with a rated output of 27.8 Vdc/12 kW. It employs water-cooled heat dissipation and features input overvoltage/undervoltage alarm and protection, output overcurrent alarm and protection, output overvoltage protection, output short-circuit protection, overtemperature protection, and CAN communication functionality. Suitable for various new energy vehicles including pure electric, hybrid, and range-extended models.

Online Consultation

Product Manual

Technical Specifications

Project	Minimum	Typical	Maximum	Unit	Conditions
Environmental Conditions
Operating Temperature	-40	-	60	℃
Storage temperature	-40	-	85	℃
Relative humidity	5	-	95	%	No condensation during normal operation
Elevation	0	-	3000	m
Heat dissipation method	Water-cooled				Water flow rate > 16 L/min, inlet water temperature not exceeding 60°C
Dustproof and waterproof	IP67
Input Characteristics
Rated Input Voltage	540			Vdc	The input end features reverse polarity protection.
Input Voltage Range	450		900	Vdc
Maximum Input Current	-	-	35	A	450V dc input, full load.
Static leakage current	-	-	3	mA	When the auxiliary power supply is not energized and the main power supply does not start, measure the input current at the rated input condition of the main power supply.
Output Characteristics
Rated Output Voltage	27.8			Vdc	Rated input and output at half load.
Output voltage setting	27.8±0.3			Vdc	Rated input and output at half load.
Output Current Range	0	-	432	A	Inductive loads such as motors must be connected to the battery.
Maximum Output Current	432			A	Maximum continuous operating current
Output rated power	12000			W
Peak output power	13000			W	Peak power: 13,000W Operating time: 6 minutes
Overall efficiency	-	94	-	%	Rated voltage input, full-load output conditions
Temperature coefficient	-	-	±0.02	%/℃
Output ripple and noise	-	-	600	mVp-p	The oscilloscope bandwidth should be 20 MHz. Connect a 10uF capacitor in parallel with a 104 ohm resistor to the probe. Perform testing with the output carrying a load exceeding 5%.
Boot-up time	-	-	3	S
Output rise time	-	-	600	ms
Current stability accuracy	-	-	±2	%
Static leakage current	-	-	6	mA	Leakage current when the output terminals are connected in parallel to a 24Vdc battery without being connected to high-voltage power supply or 24Vdc control power.
Control Method	CAN Control/EN Control			/
Capacitive load	-	-	45000	uF
Dynamic Response Voltage Overshoot Magnitude	15			%	Load variation: 30% to 80% to 30%, load change rate ≤ 0.1 A/μs, dynamic load frequency range: 50 Hz to 5 kHz.
Input continuous power cycling	Support			/	Under normal control signal input and output conditions, the input can withstand five consecutive on-off cycles within one minute without causing power supply failure or damage.

Technical Specifications

User Case Studies

Related Recommendations