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High isolation current sensor NOVOSENSE NSM2012-20B5R-DSPR with 3000V isolation and low on resistance

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High isolation current sensor NOVOSENSE NSM2012-20B5R-DSPR with 3000V isolation and low on resistance

working temperature : -40℃~+125℃

Current Range : ±20A

Voltage - Supply : 5V

Current Terminal Resistance : 1.2mΩ

Band Width : 400kHz

Response Time (tr) : 1.5us

Sensitivity : 100mV/A

Bidirectional Current Detection : Support

Description : ±20A 100mV/A SOIC-8 Current Sensors RoHS

Mfr. Part # : NSM2012-20B5R-DSPR

Model Number : NSM2012-20B5R-DSPR

Package : SOIC-8

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Product Overview

The NSM2012 is an integrated current sensor based on the Hall effect, offering high precision and common-mode magnetic field suppression with up to 3000V isolation. It features a very low 1.2m on-resistance, minimizing on-chip power loss. Leveraging NOVOSENSE's innovative isolation technology and signal conditioning, it accurately senses current flowing through its internal busbar while meeting high isolation requirements. The use of a differential Hall element provides strong immunity to external stray magnetic fields. The NSM2012 supports both proportional and fixed output modes. The fixed mode simplifies customer ADC differential sampling of Vref and Vout voltages, reducing common-mode interference. Compared to shunt resistor plus isolation amplifier solutions, the NSM2012 eliminates the need for primary-side power supply, simplifies PCB layout, and offers superior isolation voltage and lifetime stability. In high-side current detection applications, a single NSM2012 can achieve a 600Vpk working voltage and withstand 6kV surge voltage without additional protection components. Its precise internal temperature compensation algorithms and factory calibration ensure excellent accuracy across the entire operating temperature range, eliminating the need for secondary programming. It supports 3.3V/5V supply voltages (depending on the version).

Product Attributes

Brand: NOVOSENSE
Certifications: UL62368/EN62368
Packaging: SOIC8

Technical Specifications

Parameter	Symbol	Min	Typ	Max	Unit	Comments
Common Characteristics
Operating Voltage	VCC	3.0	3.3	3.6	V	3.3V supply version
		4.5	5	5.5	V	5V supply version
Operating Current	ICC		12	15	mA	No load, Vcc=5V
			7.5	8	mA	No load, Vcc=3.3V
Primary On-Resistance	RP		1.2		m	TA = 25
Bandwidth	BW		400		kHz	-3dB, CL=1nF, TA = 25, 30A range measurement, R version
Response Time	Tresponse		1.5		us	Vout=1V, TA = 25, CL=1nF, 30A range measurement, R version
Isolation Withstand Voltage	VISO		3000		Vrms	60s isolation withstand voltage, tested before shipment
Surge Withstand Voltage	Vsurge		6		kV	According to IEC61000-4-5, 1.2us/50us waveform
CMTI	CMTI	>100			V/ns	Failure criterion: output spike >100mV and duration >1us
Creepage Distance	Creepage		4		mm	Minimum creepage distance
Clearance Distance	Clearance		4		mm	Minimum air gap distance
CTI	CTI	>=600				CTI I
NSM2012-30B3R-DSPR Characteristics (VCC = 3.3V)
Current Measurement Range	Ipr	-30		30	A
Sensitivity	Sens		44		mV/A	Iprmin
Zero Current Output Voltage	VQVO		VCC/2		V	Ipr=0A
Total Output Error		-2.5		2.5	%	TA = 25~125
		3.2			%	TA = -40~25
NSM2012-30B5R-DSPR Characteristics (VCC = 5V)
Current Measurement Range	Ipr	-30		30	A
Sensitivity	Sens		66.67		mV/A	Iprmin
Zero Current Output Voltage	VQVO		VCC/2		V	Ipr=0A
Total Output Error		-1.2		1.2	%	TA = 25~125
		1.8			%	TA = -40~25

2504101957_NOVOSENSE-NSM2012-20B5R-DSPR_C5137006.pdf

High isolation current sensor NOVOSENSE NSM2012-20B5R-DSPR with 3000V isolation and low on resistance Images

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