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Texas Instruments DRV421 | Demoboard TIDA-00905

Fluxgate Magnetic Current Sensing Reference Design with High Linearity for 3–Phase Inverters

Overview

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IC revision001

Description

The TIDA-00905 reference design provides a reference solution for accuracy, high linearity and the galvanic isolation required for current measurement in three phase inverters using closed-loop fluxgate magnetic current sensors. It consists of magnetic core with compensation winding interfaced to driver IC with built-in fluxgate sensor. The design provides a pseudo differential output with an option to connect to 3.3V or 5V ADCs. Hardware circuit for over current and ground fault detection enables over-current protection of power switches.

Features

Remark: BOM is added with EVM board.Designed to accurately measure three phase inverter currents up to 50ARMS (nominal) and 150A (maximum)200 kHz bandwidth, closed-loop current sensing using magnetic module and fluxgate sensor (DRV421) to enable low propagation delay in current measurementCalibrated current measurement accuracy of ±1% (typical) across temperature range from -25°C to 85°CHardware based overload and ground fault detection enables fast response for protection of power switches

Typical applications

  • Solar Inverters
  • Three Phase UPS
  • AC Inverter & VF Drives

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
W
(mm)
H
(mm)
IR
(A)
TiTl
(mm)
Pins (Value)
(pcs)
Samples
150060GS75000SPEC
25 files Active i| Production is active. Expected lifetime: >10 years.WL-SMCW SMT Mono-color Chip LED Waterclear 525 Green 515 430 3.2 InGaN 140 0.8 0.7
7461086SPEC
4 files Active i| Production is active. Expected lifetime: >10 years.WP-BUCF REDCUBE PRESS-FIT with internal thread, circumference 9 6 175 M4 6 12
Order Code Data­sheet Simu­lation
150060GS75000SPEC
7461086SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
W
(mm)
H
(mm)
IR
(A)
TiTl
(mm)
Pins (Value)
(pcs)
Samples