Texas Instruments AMC23C15DWVR

Overview

AMC23C15 from Texas Instruments is a dual, reinforced isolated window comparator with fast 280 ns propagation delay, ±1% trip threshold accuracy at 250 mV, and adjustable thresholds (±5 mV to ±300 mV) for one channel and fixed ±60 mV thresholds for the second - used in overcurrent detection for motor drives and solar inverters.

For engineers reviewing the AMC23C15 datasheet, AMC23C15 pinout, AMC23C15 application, or AMC23C15 equivalent, key selection criteria include reinforced isolation rating (7000 V_PK, 5000 V_RMS), dual-mode operation (window vs. positive-only), open-drain output compatibility with MCU interfaces, and CMTI ≥15 V/ns for noisy power electronics environments.

Technical Context

The AMC23C15 implements two independent galvanically isolated comparators across a reinforced dielectric barrier certified per DIN EN IEC 60747-17 and UL1577. One comparator supports user-adjustable symmetric thresholds via a 100 µA ±1% reference current into an external resistor on the REF pin; the other provides fixed ±60 mV thresholds.

It operates in two functional modes: window-comparator mode (both positive and negative thresholds active) when V_REF < 550 mV, and positive-comparator-only mode (Cmp0/Cmp2 enabled, Cmp1/Cmp3 disabled) when V_REF > 550 mV - enabling flexible voltage monitoring of unidirectional signals like DC bus rails.

Key Specifications

Pinout & Package

AMC23C15 is housed in an 8-pin wide-body SOIC (DWV) package measuring 5.85 mm × 11.5 mm, optimized for reinforced creepage and clearance (≥8.5 mm) per IEC 60664-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar isolated comparator applications.

Compared with AMC23C15, AMC1301QDWVRQ1 delivers analog feedback for regulation but adds latency and component count for fault detection, while ISO224BDWVR offers wider bandwidth but lacks integrated comparators and threshold flexibility - making AMC23C15 optimal for deterministic, low-latency overcurrent protection.

Availability

AMC23C15 is available at Aetrix Electronics and suitable for motor drives, solar inverters, and frequency inverters requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.

Supply support for AMC23C15 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in isolation, power management, and precision signal chain solutions.

The AMC23C15 belongs to TI's reinforced isolated comparator product line, designed specifically for high-reliability overcurrent and overvoltage protection in industrial power electronics where safety certification, speed, and integration are critical.

FAQ

What is the maximum adjustable threshold range supported by the AMC23C15?

The AMC23C15 supports an adjustable threshold range of ±5 mV to ±300 mV for its first window comparator channel. This is achieved by connecting an external resistor between the REF pin and GND1, leveraging the internal 100 µA ±1% reference current source. The AMC23C15 datasheet confirms this range applies across the full –40°C to +125°C temperature range and all valid supply voltages.

Does the AMC23C15 require external components to operate in window-comparator mode?

Yes - the AMC23C15 requires an external resistor from REF to GND1 to set the adjustable threshold for window-comparator mode. A capacitor (20–100 nF) is also recommended from REF to GND1 for noise filtering. No external components are required for the fixed ±60 mV comparator (Cmp2/Cmp3), and the open-drain outputs (OUT1/OUT2) need external pull-up resistors to VDD2.

How does the AMC23C15 handle common-mode transients in high-noise environments?

The AMC23C15 achieves ≥15 V/ns minimum common-mode transient immunity (CMTI), verified per test conditions with |VIN – VREF| ≥ 4 mV and 10 kΩ pull-up. Its reinforced isolation barrier and internal layout minimize coupling, enabling reliable operation in motor drives and inverters with fast-switching SiC/GaN devices where dv/dt exceeds 10 kV/µs.

Can the AMC23C15 be used for unidirectional voltage monitoring only?

Yes - the AMC23C15 supports positive-comparator-only mode when the REF pin voltage exceeds 550 mV. In this mode, Cmp0 (adjustable threshold from 600 mV to 2.7 V) and Cmp2 (fixed 60 mV threshold) remain active, while Cmp1 and Cmp3 are disabled. This makes the AMC23C15 suitable for DC bus overvoltage detection without negative excursion handling.

What safety certifications apply to the AMC23C15 isolation barrier?

The AMC23C15 isolation barrier is certified to DIN EN IEC 60747-17 (VDE 0884-17) for 7000 V_PK reinforced isolation and UL1577 for 5000 V_RMS withstand voltage. It also complies with IEC 62368-1 for end-equipment safety, with certificate number 40040142 and UL file number E181974 - all explicitly documented for the AMC23C15 DWV package.