UPS Power Supply Solutions

High-efficiency uninterruptible power architectures that combine active PFC, bidirectional battery energy management, low-distortion inversion, seamless bypass transfer and real-time system supervision.

UPS power supply application

Resilient power conversion for uninterrupted critical loads

Online UPS systems maintain continuous, regulated AC power by coordinating a high-power-factor input stage, a stable DC link, bidirectional battery charging and discharge, a low-distortion inverter and an automatic static-bypass path. The architecture must transition between utility, battery and bypass operation without interrupting critical loads while managing battery state, thermal limits, overload events, short circuits, grid disturbances and remote diagnostics.

Key advantages

  • High input power factor
  • Low input current THD
  • Seamless backup transfer
  • Bidirectional battery control
  • Low-distortion AC output
  • Fast static-bypass response
  • Wide battery-voltage support
  • High conversion efficiency
  • Overload and short-circuit protection
  • Battery health monitoring
  • Remote telemetry readiness
  • Scalable system power

UPS architecture and product mapping

Online UPS Power Architecture

AC input conditioning, active PFC, DC-link regulation, bidirectional battery charging, low-distortion inversion, static bypass and supervisory control.

UPS Power Supply Solutions Editable two-to-one SVG block diagram for an online UPS power supply. Interactive MOT-supported blocks are PFC, Bidirectional DC/DC Charger, Battery Pack, Inverter, and Main Controller. UPS POWER SUPPLY SOLUTIONS STATIC BYPASS PATH AC Input & EMI / Surge PFC Rectifier · Boost stage DC Link High-voltage DC bus Inverter DC/AC full bridge Output Filter & Static Switch Conditioned AC output Critical Load IT · Telecom · Industrial Battery Pack Cells · BMS · Protection Bidirectional DC/DC Charger Charge · Discharge · DC bus support Main Controller Power sequencing · PWM · Bypass logic Battery management · Protection · Telemetry DSP / MCU supervisory control Filled blocks: MOT supported device candidates Outline blocks: system-level functional blocks MOT Semiconductor Solutions
Tip: Select a block in the diagram or choose a module from the list. On mobile, swipe horizontally to view the full diagram.

Explore the UPS power architecture through an interactive block diagram. Select PFC, the bidirectional DC/DC charger, battery pack, inverter or main controller to review its design role, key engineering considerations and recommended MOT device categories.

About the solution

Double-conversion power flow with coordinated battery energy and bypass control

The UPS converts utility AC into a regulated DC link through an active PFC stage, then recreates a clean, stable AC output through the inverter. A bidirectional DC/DC stage charges the battery during normal operation and returns stored energy to the DC link during an outage. The main controller synchronizes PFC, charger, inverter, static bypass, protection and telemetry functions to maintain uninterrupted output under changing line, load and battery conditions.

Scalable for data centers, telecom infrastructure, industrial automation and medical systems

The same functional platform can be adapted from compact single-phase UPS products to higher-power modular and rack systems. Semiconductor voltage rating, switching topology, battery voltage, inverter modulation, thermal design, overload capability, bypass strategy and communication interfaces can be scaled to match servers, networking equipment, process controls, security systems and other mission-critical loads.

Device categories aligned with the rectifier, battery, inverter and supervisory control paths

PFC MOSFETs and controllers, high-current gate drivers, bidirectional converter switches, battery-protection MOSFETs, sensing devices, inverter power transistors, isolated drivers, current and voltage supervisors, digital power controllers and communication interfaces provide a practical component platform for efficient, robust and serviceable UPS designs.

Double-conversion power flow with coordinated battery energy and bypass control

The UPS converts utility AC into a regulated DC link through an active PFC stage, then recreates a clean, stable AC output through the inverter. A bidirectional DC/DC stage charges the battery during normal operation and returns stored energy to the DC link during an outage. The main controller synchronizes PFC, charger, inverter, static bypass, protection and telemetry functions to maintain uninterrupted output under changing line, load and battery conditions.

Scalable for data centers, telecom infrastructure, industrial automation and medical systems

The same functional platform can be adapted from compact single-phase UPS products to higher-power modular and rack systems. Semiconductor voltage rating, switching topology, battery voltage, inverter modulation, thermal design, overload capability, bypass strategy and communication interfaces can be scaled to match servers, networking equipment, process controls, security systems and other mission-critical loads.

Device categories aligned with the rectifier, battery, inverter and supervisory control paths

PFC MOSFETs and controllers, high-current gate drivers, bidirectional converter switches, battery-protection MOSFETs, sensing devices, inverter power transistors, isolated drivers, current and voltage supervisors, digital power controllers and communication interfaces provide a practical component platform for efficient, robust and serviceable UPS designs.

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  • NDA-protected review for early-stage projects
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