Automotive-Compliant Current Shunt Monitors from Diodes Incorporated Enable High-Precision Voltage Sensing in Electric Vehicles
June 21 2023 - 10:14AM
Business Wire
Diodes Incorporated (Diodes) (Nasdaq: DIOD) introduces a series
of high-precision current shunt monitors designed to measure small
sense voltages across a wide common-mode voltage range in electric
vehicles (EVs): the ZXCT21xQ family. Automotive applications for
these single-stage instrumentation amplifiers include current
sensing of load/rail currents in brushless DC (BLDC) motor
controllers, e-compressors, high-power DC-DC converters, on-board
chargers (OBC), battery management systems (BMS), ADAS power
supplies, and wireless phone chargers.
Low offset voltage (±30μV) and gain error (±0.5% and ±0.8%) of
the zero-drift core (typical ±100nV/°C) in these devices enable
current sensing across the shunt, with maximum voltage drops as low
as 10mV (full-scale). This allows small-value sense resistors to be
used in high-accuracy monitoring of large-magnitude currents, while
reducing the power lost during measurement. Furthermore, the low
quiescent current consumption of 100μA (maximum) also helps to
minimize power consumption.
These current monitors have a 0-26V rail-to-rail common-mode
sense voltage range (irrespective of supply voltage), enabling both
high-side and low-side precision current measurement, while its REF
pin enables bi-directional current flow measurement. The ZXCT21xQ
family has six voltage gain options (50V/V, 75V/V, 100V/V, 200V/V,
500V/V, and 1000V/V), each with its own unique order number with
three accuracy variants.
All devices in the ZXCT21xQ series are AEC-Q100 Grade 1
qualified, manufactured in IATF 16949 certified facilities, and
support PPAP documentation. Each operates over a -40°C to +125°C
temperature range and are available in industry-standard SOT363
package. The ZXCT21xQ devices are available from $0.321 to $0.451
in 1,000 piece quantities.
About Diodes Incorporated
Diodes Incorporated (Nasdaq: DIOD), a Standard and Poor’s
SmallCap 600 and Russell 3000 Index company, delivers high-quality
semiconductor products to the world’s leading companies in the
automotive, industrial, computing, consumer electronics, and
communications markets. We leverage our expanded product portfolio
of discrete, analog, and mixed-signal products and leading-edge
packaging technology to meet customers’ needs. Our broad range of
application-specific solutions and solutions-focused sales, coupled
with worldwide operations of 32 sites, including engineering,
testing, manufacturing, and customer service, enables us to be a
premier provider for high-volume, high-growth markets. For more
information visit www.diodes.com.
The Diodes logo is a registered trademark of Diodes Incorporated
in the United States and other countries.
All other trademarks are the property of their respective
owners.
© 2023 Diodes Incorporated. All Rights Reserved.
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