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Product Overview
CHONDA’s 1000V DC-DC Converter for Battery Energy Storage Systems (BESS) is engineered to provide reliable isolated DC power for battery management systems, monitoring equipment, controllers, and auxiliary electronics used in modern energy storage installations.
With a wide 100–1000VDC input range, this converter efficiently converts high-voltage DC into stable low-voltage output while providing excellent electrical isolation and long-term operational reliability.
It is an ideal power solution for battery energy storage systems, energy storage cabinets, PCS equipment, renewable energy projects, and industrial energy management applications.
Key Features
- Wide 100–1000VDC input range
- High isolation for battery system safety
- Stable regulated DC output
- Designed for Battery Energy Storage Systems (BESS)
- High efficiency and low ripple
- Industrial-grade reliability
- Continuous short-circuit protection
- OEM and customized solutions available
Typical Applications
- ✔ PV String Monitoring Systems
- ✔ Combiner Box Monitoring
- ✔ Battery Energy Storage Systems (BESS)
- ✔ Industrial Automation Equipment
- ✔ Solar Tracker Controllers
- ✔ High Voltage Test Equipment
- ✔ Railway Electronics
- ✔ Power Distribution Systems
Application Diagram
Our high voltage DC-DC converters provide stable and reliable low-voltage power for various industrial and energy applications.

Electrical Specifications
Input Specifications
| Parameter | Value |
|---|---|
| Input Voltage | 100–1000VDC (200–1200VDC Optional) |
| Input Current | PHV05: 100mA (typ) PHV10: 230mA (typ) PHV15: 250mA (typ) |
| Surge Current | 10A (100VDC), 20A (1200VDC) |
Output Specifications
| Parameter | Value |
|---|---|
| Output Accuracy | ±1% |
| Line Regulation | ±0.5% (typ) |
| Load Regulation | ±2% (10–100% Load) |
| Ripple & Noise | 100mVp-p (20MHz Bandwidth) |
| Minimum Load | 0% |
| Short Circuit Protection | Continuous, Auto Recovery |
| Over Current Protection | ≥110% Rated Output |
Environmental Specifications
| Parameter | Value |
|---|---|
| Operating Temperature | −40°C to +55°C |
| Storage Temperature | −40°C to +105°C |
| Humidity | 95% RH Max |
| Case Temperature | +80°C Max |
Performance
| Parameter | Value |
|---|---|
| Efficiency | 75% (typ) |
| Switching Frequency | 65–100kHz |
| Start-up Delay | 500ms |
| Dynamic Response | ±4% / 500μs |
| Temperature Drift | 0.02%/°C |
Isolation & Safety
| Parameter | Value |
|---|---|
| Isolation Voltage | 4000VDC / 1 Minute |
| Isolation Resistance | 100GΩ @ 500VDC |
| Leakage Current | 0.03mA RMS |
| Safety Class | Class I |
| MTBF | >215,000 Hours @25°C |
Available Models

Performance Test Results
Input Voltage vs Load

Dynamic load response

Mechanical Dimensions

outside shell size

sectional dimension:1.0mm terminal accuracy:0.1mm other accuracy: ±0.5mm

Frequently Asked Questions
Q1. What is a BESS DC-DC converter used for?
A BESS DC-DC converter provides stable isolated DC power for battery management systems (BMS), controllers, communication devices, monitoring equipment, and auxiliary electronics inside battery energy storage systems.
Q2. Is this converter suitable for high-voltage battery systems?
Yes. It supports a wide 100–1000VDC input range and can be customized for higher voltage energy storage applications.
Q3. Why is electrical isolation important in BESS?
Electrical isolation improves personnel safety, protects sensitive electronics from high-voltage transients, reduces electrical noise, and increases long-term system reliability.
Q4. Can CHONDA customize this converter?
Yes. We support customized input voltage, output voltage, power rating, isolation level, enclosure design, and connector options according to customer requirements.
Q5. What energy storage applications is this product suitable for?
It is widely used in battery energy storage systems (BESS), energy storage cabinets, renewable energy projects, microgrids, industrial energy management systems, and PCS equipment.
Q6. Do you support OEM and industrial projects?
Yes. CHONDA provides OEM manufacturing, engineering support, and customized DC-DC power solutions for industrial and renewable energy applications.
Need a Custom Solution?
Looking for a customized high-voltage DC/DC converter for your photovoltaic or industrial application?
Contact our engineering team for customized input voltage, output voltage, package size, and power solutions.
Looking for other voltage ranges? Explore our complete High Voltage DC-DC Converter Series.




