AMC1302-Q1

ACTIVE

Automotive ±50mV-Input High-Precision Reinforced Isolated Amplifier for Current Sensing

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Product details

Parameters

Input range (Vp-p) ±0.05 Isolation working voltage VIOWM (rms) (V) 1500 Isolation transient overvoltage VIOTM (peak) (V) 7000 CMTI (Min) (kV/µs) 55 Input offset (+/-) (Max) (mV) 0.1 Input offset drift (+/-) (Typ) (uV/C) 0.15 Gain error (+/-) (Max) (%) 0.3 Gain error drift (+/-) (Typ) (ppm/°C) 15 Gain non-linearity (+/-) (Max) (%) 0.03 Small signal bandwidth (Typ) (kHz) 280 Rating Automotive Operating temperature range (C) -40 to 125 open-in-new Find other Isolated amplifiers

Package | Pins | Size

SOIC (DWV) 8 67 mm² 5.85 x 11.5 open-in-new Find other Isolated amplifiers

Features

  • AEC-Q100 Qualified for Automotive Applications:
    • Temperature Grade 1: –40°C to 125°C, TA
  • ±50-mV Input Voltage Range for Low Dissipation, Shunt-Resistor-Based Current Measurement
  • Fixed Gain With Low Drift: 41 ± 0.3%, ±50 ppm/°C
  • Low Input Offset and Drift: ±100 µV, ±0.8 µV/°C
  • Low Nonlinearity and Drift: ±0.03%, ±1 ppm/°C
  • Very Low Isolated High-Side Power Dissipation When Operated From a 3.3-V Supply
  • System-Level Diagnostic Features
  • Safety-Related Certifications:
    • 7071-VPK Reinforced Isolation per DIN V VDE V 0884-11 (VDE V 0884-11): 2017-01
    • 5000-VRMS Isolation for 1 Minute per UL1577
    • CAN/CSA No. 5A-Component Acceptance Service Notice
  • High CMTI: 140 kV/µs (typ), 70 kV/µs (min)

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Description

The AMC1302-Q1 is a precision isolated amplifier with a capacitive isolation barrier that has high immunity to magnetic interference. This barrier provides reinforced isolation of 5 kVRMS (maximum) with a very long lifetime and low power dissipation. When used with isolated power supplies, this device isolates components that operate on different common-mode voltage levels. Furthermore, the AMC1302-Q1 also protects lower-voltage devices from damage.

The input of the AMC1302-Q1 is optimized for direct connection to shunt resistors or other low voltage-level signal sources. The ±50-mV input voltage range allows significant reduction of the power dissipation through the shunt. Additionally, the low high-side supply current and voltage of the AMC1302-Q1 allow use of low-cost isolated power-supply solutions. The performance of the device supports accurate current control resulting in system-level power savings and in low torque ripple that is particularly important in motor control applications. The integrated input common-mode overvoltage and missing high-side supply voltage detection features of the AMC1302-Q1 simplify system-level diagnostics.

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Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
49
Description

The AMC1302 evaluation module (EVM) is a platform for evaluating the AMC1302, which is a 7-kV reinforced isolation amplifier designed for use in current shunt measuring applications. AMC1302EVM allows the user to explore all the features of the AMC1302 device.

Features
  • Reinforced isolation amplifier: 7-kV peak, 10-kV surge
  • Fixed gain of 41
  • ±50-mV input range
  • Low gain error and drift
  • Extended industrial temperature range

Design tools & simulation

SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
Bidirectional CLLLC resonant dual active bridge (DAB) reference design for HEV/EV onboard charger
TIDM-02002 — CLLLC resonant DAB with bidirectional power flow capability and soft switching characteristics is an ideal candidate for Hybrid Electric Vehicle/Electric Vehicle (HEV/EV) on-board chargers and energy storage applications. This design illustrates control of this power topology using a C2000&trade (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
6.6 kW, bi-directional, dual-active-bridge CLLLC resonant converter reference design
PMP21495 — This reference design is a 6.6 kW, bi-directional, dual-active-bridge resonant converterdesign that allows 380 VDC to 600 VDC input and 280 VDC to 450 VDC output. This design uses the C2000 micro-controller TMS320F280049 along with silicon-carbide (SiC) driver UCC21530-Q1 to drive bridges both on (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
6.6 kW, bi-directional CLLLC resonant converter reference design using PCB winding transformer
PMP21999 — This 6.6 kW, bi-directional, dual-active-bridge resonant converter reference design allows 380 VDC to 600 VDC input and 280 VDC to 450 VDC output. PCB winding transformer and Rogowski coil synchronous rectifier (SR) control are applied in this design for power density and efficiency optimization. A (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive shunt-based isolated current sensor reference design for DC/DC and OBC applications
TIDA-020018 — This reference design demonstrates high-side primary current sensing in DC/DC converter and onboard charger (OBC) applications for hybrid and electric vehicles. Using an isolated shunt approach for current sensing has several advantages, including high accuracy, linearity and robustness. However (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

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