Description
IMDC300120
15kW Bidirectional Isolated DC-DC Converter Module
350–850Vdc Bus Side ·
Bidirectional · High-Frequency Isolation · Up to 32 Units Parallel
|
✓ IP20
|
✓ Hot-Swap
The IMDC300120 is a bidirectional high-frequency isolated DC-DC converter module. The battery-side voltage range is 40 to 300Vdc, and the DC bus-side voltage range is 350 to 850Vdc. It supports charging, discharging, and automatic switching modes, making it ideal for energy storage, photovoltaic integration, vehicle auxiliary power, and industrial DC power supply systems.
With fully digital DSP control, the module provides comprehensive protections including overvoltage, undervoltage, reverse connection, short‑circuit, overtemperature, and surge protection. It is equipped with CAN bus and RS485 communication interfaces and supports up to 32 modules in parallel for flexible capacity expansion.
The module complies with GB/T 34120-2017, GB/T 34133-2017, UL1973, and UL9540 standards, ensuring high reliability and safety for demanding applications.
⚡ Core Functions & Product Advantages
Three Operating Modes
Supports charging, discharging, and automatic switching modes for intelligent energy management.
High-Frequency Isolated
Galvanic isolation between battery and DC bus ensures safety and system reliability.
Full Digital Control
DSP-based control with CAN/RS485 communication, supporting parallel operation and real‑time monitoring.
Multiple Safety Protections
Overvoltage, undervoltage, reverse connection, short‑circuit, overtemperature, and surge protection – meets UL/GB standards.
Standard Rack Installation
19‑inch rack‑mountable design with LED alarm display, suitable for easy integration into existing systems.
Wide Temperature Range
Operates from -40°C to +60°C with derating above 50°C, suitable for harsh environments.
🏭 Typical Applications
Energy Storage Systems
Bidirectional DC‑DC interface for residential/commercial storage, enabling battery-to-bus energy flow.
PV-Storage Integrated Systems
DC‑DC conversion between photovoltaic panels and batteries, improving overall system efficiency.
Vehicle Auxiliary Power
Voltage conversion and management for on‑board energy storage in electric vehicles and hybrid systems.
Industrial DC Power Supply
DC bus power for industrial equipment, data centers, and battery backup systems.
⚡ Electrical Topology & Working Mode
IMDC300120 features a bidirectional high-frequency isolated DC-DC topology with three operating modes: Charging, Discharging, and Automatic Switching.
⟷
HF Isolated DC/DC
⟷
Battery 40–300Vdc
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⚡ Discharging Mode
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🔄 Auto Switching
📊 Technical Specifications — IMDC300120
| Category | Parameter | Specification |
|---|---|---|
| 🌡️ Environment | Operating Temperature (TA) | -40°C to +60°C (derating above 50°C) |
| Storage Temperature | -40°C to +75°C | |
| Pollution Degree | Pollution Degree II | |
| Altitude | ≤ 2000m (derating above 2000m) | |
| Cooling | Natural convection / Forced air (optional) | |
| 🔌 DC Bus | Voltage Range | 350 – 850Vdc |
| Rated Voltage | 750Vdc | |
| Max Current | 23A Max (linear current limit below 600Vdc) | |
| 🔋 Battery | Voltage Range | 40 – 300Vdc |
| Rated Voltage | 150Vdc | |
| Max Current | 120A Max | |
| Rated Power | 15kW | |
| Voltage Regulation Accuracy | ≤ ±2% | |
| Voltage Ripple | ≤ 2% | |
| Current Regulation Accuracy | ≤ ±5% | |
| ⚡ General | Soft Start Time | 3s ≤ t ≤ 8s |
| No‑Load Loss | < 50W (Vbat=300Vdc, discharge mode) | |
| Standby Loss | < 15W (Vbat=300Vdc, discharge mode) | |
| 🛡️ Protection | Battery Overvoltage Alarm | > setpoint – 2Vdc |
| Battery Overvoltage Alarm Recovery | < setpoint - 4Vdc | |
| Battery Overvoltage Protection | ≥ setpoint | |
| Battery Overvoltage Recovery | < setpoint - 5Vdc | |
| Battery Undervoltage Alarm | ≤ setpoint | |
| Battery Undervoltage Alarm Recovery | > setpoint + 5Vdc | |
| Battery Undervoltage Protection | ≤ setpoint | |
| Battery Undervoltage Recovery | > setpoint + 5Vdc | |
| Bus Overvoltage Protection | ≥ 880Vdc | |
| Bus Overvoltage Recovery | ≤ 840Vdc | |
| Bus Undervoltage Protection | ≤ 280Vdc | |
| Bus Undervoltage Recovery | Auto clear after 10s fault shutdown |
🛡️ Protection & Safety Mechanisms
Multi‑level alarm and protection thresholds for safe battery operation.
Prevents damage from abnormal bus voltage conditions.
Avoids irreversible damage from polarity misconnection.
Latch‑off protection, requires restart after fault clearance.
Auto‑recovery when temperature returns to normal range.
Common mode ±5kA surge protection on battery and bus ports.
Hardware and software dual protection for fast fault response.
❓ Frequently Asked Questions
🔗 How many IMDC300120 modules can be paralleled?
Supports up to 32 modules in parallel, with CAN or RS485 communication for current sharing and system management, allowing flexible capacity expansion.
📡 What communication interfaces are supported?
Standard CAN bus and RS485 interfaces are provided, supporting standard protocols for easy integration with host systems and BMS.
🌡️ What is the operating temperature range? Is derating applied at high temperature?
Operating temperature: -40°C to +60°C. Output power derating is applied above 50°C to ensure reliability.
📦 What is the protection rating and installation method?
The module has IP20 protection rating and is designed for 19‑inch rack mounting with hot‑swappable capability.
⏱️ What is the MTBF (Mean Time Between Failures) of the module?
The module is designed for high reliability, with an MTBF exceeding 1,000,000 hours (at 25°C), ensuring long‑term stable operation.
🔗 Related Products
— Battery side 100–350Vdc, Bus side 750Vdc, 15‑30kW options
— Battery side 200–600Vdc, Bus side 1000Vdc for high‑voltage storage
— AC 220/380V input, DC 400‑800V output, grid‑tied/off‑grid modes
— Complete residential/commercial storage systems with one‑stop service
💼 Business & Service
