Unlike conventional DC-DC converters, bidirectional models transfer electrical power in both directions between DC buses, making them useful for battery energy storage, energy recovery, and industrial power systems. Finding the right bidirectional DC-DC converter supplier involves more than comparing brand names.
However, not every power supply manufacturer offers complete bidirectional converters. Some specialize in compact board-mounted modules, while others manufacture high-power conversion systems or develop application-specific solutions.
This guide compares seven suppliers with identifiable bidirectional DC-DC products, highlights their technical differences, and explains how to evaluate sourcing options for your project.
Leading Bidirectional DC-DC Converter Suppliers at a Glance
Bidirectional DC-DC converters are available in several configurations, ranging from compact modules to large-scale industrial systems. The right manufacturer depends on your voltage requirements, power level, isolation needs, and application.
The following suppliers offer documented bidirectional DC-DC converter products or product families.
| Supplier | Featured Product | Product Type | Typical Applications |
|---|---|---|---|
| Vicor | NBM Series | Non-isolated, fixed-ratio modules | DC bus architectures, computing, industrial power |
| TDK-Lambda | EZA Series | Isolated bidirectional converters | Battery storage, energy regeneration |
| Epic Power Converters | EPC Series | Isolated and non-isolated converters | Energy storage, industrial equipment |
| Norvento | nS DC-DC | High-power modular systems | Large-scale energy storage, DC energy systems |
| Converdan | 50kW Isolated Bidirectional DC/DC Module | Isolated power conversion module | Energy storage, DC charging applications |
| ELSİS | BIDIR Module | Digitally controlled buck-boost module | Battery charging, industrial DC systems |
| ETPS | CON-DSS Series | Programmable industrial converters | Testing, industrial power applications |
These suppliers serve different power levels and integration requirements. A board-mounted module designed for distributed power systems is not directly interchangeable with a high-power converter intended for industrial energy infrastructure.
Before selecting a supplier, identify whether your project requires a complete power conversion system, an embedded converter module, or specific electronic components for a custom design.
Top Bidirectional DC-DC Converter Manufacturers and Their Products
Vicor: NBM Series Bidirectional Bus Converters
Vicor manufactures high-density power conversion modules, including the NBM family of non-isolated, fixed-ratio bidirectional DC-DC converters.
The NBM series enables power transfer in either direction between DC voltage buses. Its fixed conversion ratio makes it suitable for applications where efficient voltage transformation is required without independent output regulation.
A representative product is the NBM2317S60D1580TMR, with the following specifications:
| Specification | Details |
|---|---|
| Featured Product | NBM2317S60D1580TMR |
| High-Side Voltage | 40–60V DC |
| Low-Side Voltage | 10–15V DC |
| Continuous Power | Up to 1,000W |
| Conversion Ratio | 1/4 in step-down operation |
| Peak Efficiency | 97.9% |
| Isolation | Non-isolated |
| Package | Surface-mount SM-ChiP |
| Power Flow | Bidirectional |
| Best For | Engineers and OEMs seeking compact, high-density bidirectional bus conversion modules |
Official Product Reference: Vicor NBM Series
TDK-Lambda: EZA Series Bidirectional DC-DC Converters
TDK-Lambda offers the EZA series of isolated bidirectional DC-DC converters for energy storage and energy regeneration applications.
Unlike compact board-mounted modules, the EZA series consists of higher-power conversion equipment designed to connect battery systems with DC power infrastructure. It supports controlled bidirectional energy transfer for charging, discharging, and regenerative applications.
Two representative products are the EZA2500 and EZA11K-320240.
| Specification | EZA2500 | EZA11K-320240 |
|---|---|---|
| Rated Power | 2.5kW class | 11kW |
| Battery-Side Voltage | Nominal 48V | 150–300V DC |
| High-Voltage Side | Nominal 320V | 240–400V DC |
| Isolation | Galvanically isolated | Galvanically isolated |
| Power Flow | Bidirectional | Bidirectional |
| Control | Digital control | Digital control |
| Typical Applications | Battery storage, energy regeneration | Industrial energy storage, regenerative systems |
| Best For | Industrial battery systems requiring isolated conversion | Higher-power energy storage and energy recovery installations |
Official Product Reference: TDK-Lambda EZA Series
Epic Power Converters: EPC Bidirectional DC-DC Series
Epic Power Converters designs and manufactures bidirectional DC-DC converters for industrial and renewable energy applications.
Its EPC portfolio includes isolated and non-isolated converter configurations for different voltage levels and control requirements. The products are used in applications such as energy storage, automated industrial equipment, electric mobility, and DC microgrids.
One representative product is the EPC 3k5 648i, an isolated bidirectional converter designed for nominal 600V and 48V DC bus architectures.
| Specification | Details |
|---|---|
| Featured Product | EPC 3k5 648i |
| High-Side Voltage | 510–848V DC |
| Low-Side Voltage | 38–59V DC |
| Peak Power | 4.2kW |
| Isolation | Galvanically isolated |
| Communication | CAN-based control |
| Power Flow | Bidirectional |
| Typical Applications | Energy storage, industrial DC systems, electric mobility |
| Best For | Industrial equipment manufacturers and energy system developers requiring configurable bidirectional power conversion |
Official Product Reference: Epic Power Bidirectional DC-DC Converters
Norvento: nS DC-DC High-Power Conversion Systems
Norvento offers the nS DC-DC platform for high-power bidirectional energy conversion.
Unlike smaller embedded modules, this platform targets large energy systems where scalability and coordinated operation are essential. It uses a modular architecture based on silicon carbide power conversion technology and is designed for integration into large-scale DC energy infrastructure.
| Specification | Details |
|---|---|
| Featured Product | nS DC-DC |
| Available Power Configurations | 400kW and 1,000kW |
| Converter Technology | Silicon carbide-based power conversion |
| Architecture | Modular, scalable system |
| Parallel Operation | Supported for coordinated load sharing |
| Power Flow | Bidirectional |
| Scalability | Multi-megawatt installations through modular configurations |
| Typical Applications | Large-scale energy storage and DC energy systems |
| Best For | Energy storage developers and system integrators planning high-power, scalable bidirectional DC conversion |
Official Product Reference: Norvento nS DC-DC
Converdan: 50kW Isolated Bidirectional DC/DC Module
Converdan develops power conversion products for applications including DC fast charging and energy storage.
Its portfolio includes a 50kW Isolated Bidirectional DC/DC Module, offering a higher-power alternative to compact board-mounted converters. The company also develops active-front-end AC/DC power modules and offers custom power conversion design services.
| Specification | Details |
|---|---|
| Featured Product | 50kW Isolated Bidirectional DC/DC Module |
| Power Rating | 50kW |
| Isolation | Galvanically isolated |
| Power Flow | Bidirectional |
| Product Category | High-power DC-DC conversion module |
| Voltage Range | Confirm according to selected product configuration |
| Control Interface | Confirm with manufacturer documentation |
| Typical Applications | Energy storage systems and DC charging equipment |
| Best For | OEMs and equipment integrators evaluating high-power isolated bidirectional conversion modules |
Official Product Reference: Converdan Power Converter Products
ELSİS: BIDIR 500W Bidirectional DC-DC Module
ELSİS offers a compact BIDIR module designed for energy transfer in both directions between DC sources.
Its digitally controlled buck-boost architecture supports battery charging and reverse energy delivery when the primary power supply becomes unavailable. The module uses an eighth-brick form factor and incorporates protection functions for industrial applications.
| Specification | Details |
|---|---|
| Featured Product | BIDIR Module |
| Maximum Output Power | 500W |
| Input Voltage | 9–60V DC |
| Adjustable Output Voltage | 3.3–48V DC |
| Efficiency | Above 97% at full rated load |
| Topology | Digitally controlled buck-boost |
| Control Interface | I²C |
| Package | Eighth-brick form factor |
| Battery Charging | Constant-current and constant-voltage capabilities |
| Protection Features | Overcurrent, overvoltage, and thermal shutdown |
| Best For | Equipment designers requiring compact, lower-power bidirectional DC-DC modules with programmable control |
Official Product Reference: ELSİS BIDIR Module
ETPS: CON-DSS Programmable Bidirectional DC-DC Converters
Electronic Test & Power Systems (ETPS) supplies the CON-DSS series of programmable bidirectional DC-DC converters.
The CON-DSS family is designed for industrial applications requiring controlled energy transfer and adjustable operating parameters. Its modular architecture supports master-slave configurations, allowing multiple converter units to operate together in higher-power systems.
| Specification | Details |
|---|---|
| Featured Product | CON-DSS Series |
| Product Type | Programmable bidirectional DC-DC converter |
| Power Rating | Depends on the selected module and system configuration |
| Voltage Control | Adjustable low-side voltage |
| Power Flow | Bidirectional |
| Control Interfaces | Analogue and RS-232 standard; additional options available |
| Parallel Operation | Master-slave configurations |
| System Scalability | Multi-unit configurations up to 2MW |
| Typical Applications | Industrial power conversion and programmable DC systems |
| Best For | Industrial users requiring programmable, modular bidirectional DC power conversion |
Official Product Reference: ETPS CON-DSS Series
Bidirectional DC-DC Converter Product Comparison
Comparing specific products is more useful than comparing manufacturer names alone. The following table highlights representative models and product platforms from the suppliers discussed above.
| Manufacturer | Product / Model | Power Rating | Isolation | Typical Application |
|---|---|---|---|---|
| Vicor | NBM2317S60D1580TMR | 1kW continuous | Non-isolated | Distributed DC power |
| TDK-Lambda | EZA2500 | 2.5kW class | Isolated | Battery energy storage |
| TDK-Lambda | EZA11K-320240 | 11kW | Isolated | Industrial energy regeneration |
| Epic Power | EPC 3k5 648i | 4.2kW peak | Isolated | Industrial DC energy systems |
| Norvento | nS DC-DC | 400kW / 1,000kW configurations | Verify configuration | Large-scale energy systems |
| Converdan | 50kW Bidirectional Module | 50kW | Isolated | Energy storage / DC charging |
| ELSİS | BIDIR Module | 500W maximum | Verify product documentation | Battery and industrial DC systems |
| ETPS | CON-DSS | Configuration-dependent | Verify model documentation | Programmable industrial systems |
Note: Ratings follow the respective manufacturers' published terminology. Continuous, maximum, peak, and system-level power ratings are not interchangeable. Confirm the exact model, voltage range, efficiency, isolation specifications, and operating conditions in the latest applicable datasheet.
When comparing these products, consider three important differences.
- Power and voltage requirements. Select a model based on the actual voltage ranges on both sides of the converter, the required continuous power, and the expected direction of energy flow.
- Isolation and conversion architecture. Non-isolated converters such as the Vicor NBM can deliver compact, high-density conversion where galvanic isolation is unnecessary. Isolated products may be required for applications with different electrical safety and system architecture requirements.
- Control and integration. A fixed-ratio converter operates differently from a programmable converter supporting regulated voltage or current control. Communication interfaces, cooling, mechanical integration, and protection features also influence product selection.
A technically compatible converter should be evaluated against the complete system design, rather than selected on power rating or efficiency alone.
Applications of Bidirectional DC-DC Converters
Bidirectional DC-DC converters are particularly useful where energy must move between a battery, DC bus, or another power source in both directions.
- Battery Energy Storage Systems (ESS). In energy storage applications, bidirectional conversion supports battery charging and discharging while managing power transfer between voltage levels. Depending on the system architecture, the converter may also need isolation, current control, and coordination with a battery management system.
- Electric Vehicle Charging and V2G. Bidirectional DC-DC conversion can be part of electric vehicle charging and vehicle-to-grid systems. It helps manage energy transfer between a battery and an intermediate DC bus, although complete V2G operation also requires compatible power conversion equipment, communication, protection, and grid-side controls.
- Industrial and Renewable Energy Systems. Industrial equipment may use bidirectional converters to recover braking energy, stabilize DC buses, or transfer power between storage devices and electrical loads. Renewable energy systems can use similar conversion functions to coordinate storage and DC power infrastructure.
These applications do not all require the same converter architecture. A compact non-isolated module may suit an embedded power system, while grid-connected energy storage equipment may require a larger isolated conversion platform.
How to Choose the Right Bidirectional DC-DC Converter Supplier
Selecting a suitable supplier requires evaluating both technical compatibility and procurement reliability.
- Verify the actual product capability. Confirm that the selected model supports bidirectional power flow during the required operating conditions. A conventional buck-boost converter should not be assumed to support reverse energy flow unless its manufacturer explicitly specifies that function.
- Review technical documentation. Check the exact manufacturer part number, voltage and current limits, continuous power ratings, isolation requirements, operating temperature, communication interface, and protection functions. Datasheet revisions and product lifecycle status should also be reviewed.
- Check availability and purchasing requirements. Manufacturing schedules, minimum order quantities, lead times, and regional availability can affect procurement. For production projects, buyers should confirm whether a model can support their expected purchasing volumes and delivery schedule.
- Evaluate the procurement channel. Original manufacturers, authorized distributors, and independent distributors have different roles. Manufacturers provide original product design and documentation, authorized distributors operate under defined brand relationships, and independent distributors may assist with sourcing specific products through alternative procurement channels.
For independent-channel purchases, buyers should also confirm product condition, applicable inspection requirements, traceability documentation, and warranty terms before placing an order.
The best supplier is therefore not necessarily the company with the largest product portfolio. It is the supplier or procurement channel that can provide a technically suitable product under acceptable commercial and quality conditions.
How Vigorcomp Supports Bidirectional DC-DC Converter Projects
Vigorcomp is an independent electronic component distributor supporting sourcing requirements for OEMs, electronics manufacturers, and procurement teams.
For bidirectional DC-DC converter projects, Vigorcomp can assist with sourcing Vicor NBM series modules, subject to verification of the specific manufacturer part number, availability, pricing, and delivery conditions. The company also supports procurement of related electronic components, including power semiconductors, integrated circuits, and other parts used in power conversion systems.
Its services can be particularly useful for customers seeking specified part numbers, managing hard-to-find or long-lead-time components, or coordinating multi-brand electronic component purchases.
Need to source a Vicor NBM converter or related power components?
Send Vigorcomp your manufacturer part number, required quantity, and target delivery date to discuss available procurement options.
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Frequently Asked Questions
Can bidirectional DC-DC converters be used in EV charging and vehicle-to-grid (V2G) systems?
Yes. Bidirectional DC-DC converters can manage power transfer between EV batteries and DC buses in suitable charging architectures. However, a complete V2G system also requires compatible grid-interface equipment, communication protocols, and electrical protection. Not every bidirectional DC-DC module is suitable for direct integration into a V2G charger.
What is a Dual Active Bridge (DAB) bidirectional DC-DC converter?
A Dual Active Bridge converter is an isolated DC-DC power conversion topology that typically uses two active switching bridges connected through a high-frequency transformer. By controlling the phase relationship between the bridges, the system can regulate power transfer in either direction.
DAB converters are used in applications requiring galvanic isolation and controlled bidirectional power flow, including certain energy storage and high-power conversion systems.
Can an independent distributor help source discontinued or hard-to-find DC-DC converter components?
Yes. Independent electronic component distributors may help buyers locate specified components through alternative sourcing channels when conventional procurement options are limited.
However, sourcing availability is not guaranteed. For discontinued or hard-to-find parts, buyers should verify the exact part number, product condition, authenticity screening requirements, applicable documentation, and commercial terms before purchasing.