Texas Instruments AMC23C12QDWVRQ1

Overview

AMC23C12QDWVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-grade reinforced isolated window comparator with ±20mV to ±300mV adjustable trip threshold, 280ns typical propagation delay, and open-drain output with latch mode. It operates across –40°C to +125°C and isolates high-side (3–25V) and low-side (2.7–5.5V) domains for overcurrent detection in HEV/EV traction inverters.

For engineers reviewing the AMC23C12QDWVRQ1 datasheet, AMC23C12QDWVRQ1 pinout, AMC23C12QDWVRQ1 application, or AMC23C12QDWVRQ1 equivalent, key selection criteria include reinforced isolation certification (7000VPK per VDE 0884-17), ±1% trip threshold error at 250mV, CMTI ≥55V/ns, and SOIC-8 DWV package compatibility with high-voltage motor control PCB layouts.

Technical Context

The AMC23C12QDWVRQ1 implements dual comparators (Cmp0 and Cmp1) forming a zero-centered window comparator: Cmp0 triggers on positive excursions above +VREF, Cmp1 on negative excursions below –VREF. Threshold adjustment uses a precise 100μA ±1% internal current source referenced to the REF pin, enabling resistor-set thresholds from ±20mV to ±300mV in window mode or 600mV–2.7V in positive-only mode.

It supports two functional modes: transparent mode (LATCH = GND2) where OUT follows input state, and latch mode (LATCH = VDD2) where OUT latches on fault and clears only on LATCH falling edge. Isolation barrier provides reinforced galvanic separation rated for 5000VRMS/1 min (UL1577) and 7000VPK (VDE 0884-17), with working voltage up to 1000VRMS AC.

Key Specifications

Pinout & Package

AMC23C12QDWVRQ1 is housed in an 8-pin wide-body SOIC (DWV) package measuring 5.85mm × 11.5mm, optimized for creepage/clearance compliance in high-voltage automotive designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AMC1301QDWVRQ1 and SI8920BD-IS, the AMC23C12QDWVRQ1 delivers deterministic 280ns fault detection with zero external components for threshold setting and latching - reducing system latency, PCB area, and functional safety validation effort in ASIL-B/C automotive subsystems.

Availability

AMC23C12QDWVRQ1 is available at Aetrix Electronics and suitable for HEV/EV traction inverters, onboard chargers (OBC), and DC/DC converters requiring stable component supply, automotive-grade qualification, and reinforced isolation compliance.

Supply support for AMC23C12QDWVRQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive, industrial, and power management solutions.

The AMC23C12QDWVRQ1 belongs to TI's automotive isolated analog portfolio, designed specifically for high-reliability overcurrent and overvoltage detection in electric vehicle power electronics where reinforced isolation, speed, and AEC-Q100 compliance are mandatory.

FAQ

What is the maximum adjustable trip threshold range for AMC23C12QDWVRQ1 in window-comparator mode?

The AMC23C12QDWVRQ1 supports an adjustable window-comparator threshold range of ±20mV to ±300mV, set by a single external resistor connected to the REF pin. This range is enabled by the device's internal 100μA ±1% reference current source, allowing precise, temperature-stable trip point configuration without external voltage references or op-amps.

Does AMC23C12QDWVRQ1 support both latch and transparent output modes, and how are they selected?

Yes, AMC23C12QDWVRQ1 supports both modes: latch mode activates when the LATCH pin is driven high (VDD2), causing the OUT pin to remain asserted until the next falling edge on LATCH; transparent mode activates when LATCH is tied to GND2, making OUT follow the input state in real time. The pin must never be left floating - it requires explicit biasing.

What isolation certifications does AMC23C12QDWVRQ1 hold, and what do they mean for system design?

AMC23C12QDWVRQ1 is certified to 7000VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17) and 5000VRMS per UL1577. These certifications validate its suitability for functional safety applications up to ASIL-D, permit use in 1000VRMS working voltage systems, and eliminate the need for additional isolation barrier validation in end-equipment certification.

Can AMC23C12QDWVRQ1 be used for overvoltage detection instead of overcurrent detection?

Yes - when configured in positive-comparator mode (REF voltage >550mV), AMC23C12QDWVRQ1 disables the negative comparator and functions as a single-ended comparator with adjustable threshold from 600mV to 2.7V. This enables direct DC bus overvoltage monitoring, such as detecting >400V on a 400V OBC input stage, without polarity inversion circuitry.

What is the guaranteed propagation delay specification for AMC23C12QDWVRQ1 across temperature and voltage?

The AMC23C12QDWVRQ1 guarantees a maximum propagation delay of 410ns over the full operating range (–40°C to +125°C, VDD1 = 3–25V, VDD2 = 2.7–5.5V, VREF = 250mV, 10mV overdrive). Its typical delay is 280ns at 25°C, enabling reliable fault response in systems requiring <500ns total detection-to-action timing budgets.