High-Voltage ICs Supporting 48V SystemsA Power Management Solution with 60V Input Operation and a Maximum Rating of 80V,
Enabling Simple Circuit Configurations and Power-Efficient System Designs
Enabling Simple Circuit Configurations and Power-Efficient System Designs
Are You Having Difficulties with Semiconductor Products for 48V Systems?
The adoption of 48V systems has increased rapidly in recent years in the automotive, renewable energy, and industrial equipment fields.
Mild hybrid electric vehicles (MHEVs, or simply mild hybrids) are becoming increasingly popular in the automotive industry as a way to improve fuel economy and reduce emissions. The use of electric power assist systems is also becoming more common. In the renewable energy field, demand for energy storage systems (ESS) in combination with photovoltaic or wind power generation is increasing. ESS are also being used in uninterruptible power supplies (UPS) and automated guided vehicles (AGVs) in the industrial equipment field.
Many of these systems, which use a power supply configuration consisting primarily of 48V batteries, are attracting attention as a next-generation power architecture that combines safety and efficiency.
Proposal from Nisshinbo Micro Devices
Our lineup includes high-voltage power management ICs and reset ICs for 48V systems. These products enable simple circuit configurations, resulting in enhanced safety and reliability system designs.
Why 48V? Background on the Rapid Increase in Adoption of 48V Systems
Advantages of 48V Systems
A 48V battery system can deliver the same amount of power as a conventional 12V and 24V battery, but at a lower current. This results in reduced wiring losses and increased power density. This directly results in increased power efficiency, weight and space savings, and lower total system costs. Additionally, while 48V systems are within the safety extra-low voltage (SELV) range, they provide a sufficient margin to supply high-power loads. These systems are considered as the optimal voltage level for next-generation applications, such as mild hybrids and direct current (DC) microgrids.
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Low current, low loss
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Compatible with thin cables
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Ideal for electrically assisted turbochargers, electric pumps, etc.
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Improved fuel economy, regenerative breaking possible
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Lower risk of electric shock than high voltage (400V or higher)
Main Application Fields
A wide variety of fields, including electric vehicles, energy storage, industrial equipment, and communications infrastructure, use 48V systems. Its high efficiency and easy-to-handle safety features make it an ideal solution for modern systems that require increased power density and simplified power management designs.
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Electric vehicle
Electric bicycles (e-bikes), electric scooters, electric motorcycles, electric wheelchairs
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Automobiles
Mild hybrids, vehicles with a 48V system
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Renewable energy
Solar energy storage systems, wind power storage systems
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Industrial applications
Forklifts, automated guided vehicles (AGVs), uninterruptible power supplies (UPS)
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Home and portable power sources
Portable power sources, off-grid power systems
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Communication and infrastructure facilities
Base stations, backup power for data centers
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Some power tools
High power tools
Product Lineup: Selecting Optimal High-Voltage ICs
Suitable for Various Power Supplies in 48V Systems
Selecting high-voltage power management ICs optimized for 48V systems is crucial for achieving high efficiency and reliability in power management designs. We offer a line of products with a maximum input operation of 60V (with a maximum rating of 80V), which can be powered directly from 48V batteries. This enables simple system configurations. Supported product groups include LDO linear regulators, DC/DC switching regulators, and voltage detectors (reset ICs).
Example of 48V System Configuration (DC/DC Switching Regulators for automotive)
LDO Regulators (Linear Regulators)
| Product Name | Key features | Input Voltage Range (Maximum Rating) |
Output Voltage Range | Output Current |
Supply Current |
Package |
|---|---|---|---|---|---|---|
| R1560 | Low Supply Current Voltage Regulator | 5.5 V to 60 V (80 V) | 1.8 V to 14.0 V | 100 mA | Typ. 3.0 μA | HSOP-6J, TO-252-5-P2 |
| R1561 | Low Supply Current Voltage Regulator | 5.5 V to 60 V (80 V) | 1.8 V to 14.0 V | 100 mA | Typ. 20.0 μA | HSOP-6J, TO-252-5-P2 |
DC/DC Switching Regulators (Buck)
| Product Name | Key features | Input Voltage Range (Maximum Rating) |
Output Voltage Range | Output Current |
Switching Frequency |
Supply Current |
Package |
|---|---|---|---|---|---|---|---|
| R1260 | Synchronous Buck DC/DC Controller | 5 V to 60 V (80 V) | 1.0 V to 16.0 V | - | 600 kHz | Typ. 15 μA | HSOP-18 |
| Product Name | Key features | Operating Voltage Range (Maximum Rating) |
Voltage Detector Threshold Range |
Output Type | Supply Current |
Package |
|---|---|---|---|---|---|---|
| R3160 | Low Supply Current Voltage Detector | 2.7 V to 60 V (80 V) | 10.0 V to 48.0 V | Nch. Open Drain | Typ. 1.8 μA | SOT-23-6 |
LDO RegulatorsR1560/R1561 Series
The R1560/R1561 are LDO regulators both of which can receive a source voltage directly from a 48 V battery. The regulators require no resistor divider, which contributes to reducing the number of external components, mounting space, and supply current.
The R1560, with its low operating current of typically 0.3 µA and standby current of typically 0.1 µA, reduces supply current at the system shutdown.
The R1561, characterized by its good transient response, achieves a stable operation even in applications with large ripples and heavy load.
Buck DC/DC ControllerR1260 Series
The R1260 is a step-down DC/DC controller which operates within an input voltage range of 5V to 60V and can generate an output voltage of 1.0V to 16.0V by driving external high- / low-side NMOSFETs. By the adoption of a unique current mode PWM architecture without an external current sense resistor, this device can make up a stable DC/DC converter with high-efficiency even if adding low Ron MOSFETs and a low DCR inductor externally. In PWM/VFM auto-switching mode, VFM control is used at light loads to achieve high efficiency even at light loads.
Reset IC (VD)R3160 Series
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The R3160 is a high-voltage reset IC directly connectable to a 48 V battery without any voltage divider. It enables reducing external components, mounting area, and supply current. The R3160 is usable for early warning systems by directly monitoring the battery voltage. Detector threshold accuracy is also high: ±1.0% (Ta=25°C).
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