Backup Energy Storage Architectures

Deliver layered power protection for volatile AI data center workloads

Volatile Graphics Processing Unit (GPU) workloads demand layered power protection. Within the rack sidecar, Battery Backup Units (BBUs) bridge grid outages and deliver short-term ride-through power, while facility Uninterruptible Power Systems (UPS) and broader Battery Energy Storage Systems (BESS) safeguard auxiliary infrastructure. Together, they enable highly reliable backup power for 800V AI racks. Allegro provides the critical semiconductor components that drive this backup ecosystem:

Microsecond Transient Protection: XtremeSense™ tunnel magnetoresistance (TMR) current sensors deliver 10 MHz-bandwidth feedback, enabling Capacitive Backup Units (CBUs) to instantly absorb violent load swings and prevent rack failures.
High-Voltage Switching: Power-Thru™ isolated gate drivers with integrated isolated bias maximize the efficiency and reliability of Silicon Carbide (SiC) switches across your BBU and UPS architectures.

uninterruptible power supply application diagram image

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Input Current Sensor

ACS71010 - ±800V Reinforced Isolation High-accuracy Hall-effect Current Sensor in SOICW-16 Package
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DC Link Current Sensor

ACS71010 - ±800V Reinforced Isolation High-accuracy Hall-effect Current Sensor in SOICW-16 Package
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Isolated Gate Driver

AHV85110 - Self-Powered Isolated GaN FET Driver with Integrated Bias Supply

AHV85111 - Self-Powered Isolated GaN FET Driver with Regulated Bipolar Output
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Primary Current Sense

ACS37030-2 - DC to 5MHz, High-Accuracy Current Sensor with Reference or Fault Output

ACS37100 - 10 MHz XtremeSense™ TMR Current Sensor with Integrated Overcurrent FAULT Detection and Output Voltage Reference

ACS37035 - AEC-Q100 qualified ±707V Reinforced Isolation 1MHz Hall-Effect Current Sensor
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Secondary Current Sense

ACS37035 - ±707V Reinforced Isolation 1MHz Hall-Effect Current Sensor

ACS37100 - 10 MHz XtremeSense™ TMR Current Sensor with Integrated Overcurrent FAULT Detection and Output Voltage Reference

ACS37030/2 - DC to 5MHz, High-Accuracy Current Sensor with Reference or Fault Output
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Output Current Sensor

ACS71010 - ±800V Reinforced Isolation High-accuracy Hall-effect Current Sensor in SOICW-16 Package
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Isolated Gate Driver

AHV85110 - Self-Powered Isolated GaN FET Driver with Integrated Bias Supply

AHV85111 - Self-Powered Isolated GaN FET Driver with Regulated Bipolar Output
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Protection Switch

A4950 - Full-Bridge DMOS PWM Motor Driver with Integrated Protection
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Grid Current Sensor

ACS71010 - ±800V Reinforced Isolation High-accuracy Hall-effect Current Sensor in SOICW-16 Package
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Load Monitor

ACS37800 - Isolated, Programmable AC and DC Power Monitoring IC
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Battery Overcurrent Sensor

ACS37200 - Ultra‑Low‑Loss Isolated Hall‑Effect Current Sensor (±200 A) in Compact PSOF‑8 package

ACS772 - 200kHz, High-Accuracy Current Sensor IC with 100µΩ Conductor for High-Current Applications

ACS773 - 200kHz, High-Accuracy Current Sensor IC with 100µΩ Conductor and 3.3V Operation
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