The TDC‑JH Series 1.5 kW DC/DC converter supplies 12 V low‑voltage DC power for vehicles. Its output can be connected to a 12 V backup battery, for which the DC‑DC converter implements dedicated charging management.
Featuring high efficiency, compact footprint, superior stability and long service life, this unit also delivers high ingress‑protection rating, strong reliability and comprehensive protection functions, making it an ideal solution for electric vehicles.
A built‑in thermal sensor enables over‑temperature protection with automatic recovery once the temperature drops. Manufactured with a fully‑sealed construction, it achieves an IP67 protection rating to guarantee reliable performance under complex operating conditions.
Features
- Fully sealed process, fan-forced heat dissipation
- Built-in thermal sensor, shuts off when temperature reaches 110¡æ
- Protection level is IP67, and it can work safely under short-term flooding conditions
- In line with the CAN 2.0 communication specification, the BUS displays working status, fault code, etc
Models
| Series |
Power |
Model |
Type of cooling |
Output voltage |
Output voltage range |
Output Current |
DC input votage£¨V) |
DC input current£¨A£© |
Max input current£¨A£© |
| DC/DC |
1.5KW |
TDC-JH-72-12 |
Enforce Air Cooling |
14V |
9-15V |
110A |
72 |
23 |
46 |
| DC/DC |
1.5KW |
TDC-JH-108-12 |
Enforce Air Cooling |
14V |
9-15V |
110A |
96/108 |
15.5 |
30 |
| DC/DC |
1.5KW |
TDC-JH-144-12 |
Enforce Air Cooling |
14V |
9-15V |
110A |
144 |
12 |
23 |
| DC/DC |
1.5KW |
TDC-JH-320-12 |
Enforce Air Cooling |
14V |
9-15V |
110A |
320 |
5.5 |
10 |
Specifications
| Item |
Specification |
| Nominal power |
1.5 kW |
| Peak power |
1.8 kW continuous for 6 mins |
| Output voltage and current |
13.8V±1%, 110A |
| Efficiency at full load |
≥92% |
| Voltage regulation |
1% |
| Voltage stabilization accuracy |
≤1% |
| Current stabilization accuracy |
≤2% |
| EMC |
Complies with GB/T 18655‑2002 |
| Protection grade |
IP67 |
| Operation temperature |
‑40¡æ ~ 60¡æ |
| Storage temperature |
‑40¡æ ~ 105¡æ |
| Control |
CAN or Enable |
| Protection |
Output over‑voltage, output low‑voltage, short‑circuit, input reverse polarity, over‑temperature, communication error |
| Size(nature‑cooled) |
241(length)×136(width)×74(height) |
| N.W. |
3.5 kg |
| Cooling way |
Natural cooling, liquid cooling, forced-air cooling |
DC/DC Converter Protection Functions
| Category |
Protection Item |
Specifications |
| Protection Functions |
Input over‑voltage protection |
Nominal Input: 72V / 115V / 144V / 320V |
| Threshold: £¾97V / £¾162V / £¾195V / £¾454V |
| Input low‑voltage protection |
Nominal Input: 72V / 115V / 144V / 320V |
| Threshold: £¼55V / £¼74V / £¼88V / £¼206V |
| Output over‑voltage protection |
Output voltage over‑voltage protection threshold is 16±0.5V; working recovery after voltage returns to ≤14±0.2V |
| Output low‑voltage protection |
Output voltage low‑voltage protection threshold is 7±1V, working recovery when voltage rises to ≥9±0.2V |
| Output over‑current protection |
Reduces the output voltage when the output current exceeds the maximum output current |
| Over‑temperature protection |
Power starts to decrease when internal temperature rises to 100¡æ, shuts off when rise to 110¡æ, and auto-recovers when the power decreases |
| Short circuit protection |
Yes, auto‑recovery |
| Input reverse polarity protection |
Supported |
Safety Guidelines
Warning: Remind users of the danger of operating with power on:
- It is strictly prohibited to disassemble or modify the device for repair or debugging.
- Do not place the unit in locations exposed to rain.
- Before installation, verify that the housing is in good condition. If any damage is found, replace it immediately or contact after‑sales service.
- All plugs and sockets shall be securely connected. Replace them immediately if they are damaged or loose.
- Do not connect or disconnect connectors while the product is powered on, otherwise personal injury may occur.
- Do not open the housing while the product is powered on; otherwise, personal injury may result.
- Do not touch high‑voltage live components of the product with bare hands. Wear insulating gloves, footwear and clothing when performing testing and maintenance. Live‑line maintenance and testing are strictly prohibited.
- When replacing fuses or contactors, avoid reckless operation to prevent product damage and potential safety hazards.
- Select a 3‑core AC power cable with protective earth conductor, and install the ground wire correctly.
- If any abnormal noise or odor occurs during product operation, disconnect the power plug immediately.
- Keep away from fire sources and flammable‑explosive substances when charging the battery normally.
- Do not charge damaged or non‑rechargeable batteries.
Note: The following items cover important product operation requirements:
- Do not block the product’s air inlet and outlet to prevent overheating.
- Ensure the output cable length is appropriate to avoid charging performance degradation caused by line voltage drop.
- Disconnect the power cord and charging plug before moving the product.
- The battery voltage must match the nominal voltage of the charger.
- Avoid collision and compression. Do not pull, twist or shake the charging cable.
- The product shall be placed in a safe, well‑ventilated and rain‑proof environment.
- For long‑term storage, pack the product properly.
