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Current Sensors · Closed Loop · PCB

API Series

Fast isolated current feedback for compact power electronics.

The API family combines closed-loop Hall-effect measurement, compact PCB integration and fast dynamic performance for AC, DC and pulsed-current measurement in power-conversion systems.

25–200 ANominal current range
< 1 µsResponse time
200 kHzBandwidth
3 kV RMSDielectric withstand
ADISENS API closed-loop PCB current sensor
Family overview

One compact format. Four current ratings.

The API family uses a compact rectangular-aperture PCB format across four nominal current ratings.

25 A±75 A measuring range
50 A±150 A measuring range
100 A±300 A measuring range
200 A±600 A measuring range
Product selection

Select the API reference by current rating

Each reference links to its controlled technical datasheet.

ReferenceNominal currentMeasuring rangeOutputSupplyBandwidthAccuracyDatasheet
API-25P325 A±75 A25 mA at IPN±15 V200 kHz< ±0.5%PDF ↗
API-50P350 A±150 A50 mA at IPN±15 V200 kHz< ±0.5%PDF ↗
API-100P3100 A±300 A50 mA at IPN±15 V200 kHz< ±0.5%PDF ↗
API-200P3200 A±600 A50 mA at IPN±15 V200 kHz< ±0.5%PDF ↗
Engineering performance

Designed for fast current-control loops

Fast Feedback

200 kHz bandwidth and sub-microsecond response support dynamic converter control.

Measurement Headroom

Each rating provides substantial current range for transient and pulsed-current measurement.

Galvanic Isolation

3 kV RMS dielectric withstand between primary and secondary circuits.

Compact PCB Integration

Rectangular primary aperture and PCB pins support compact busbar-based assemblies.

Current Output

Secondary-current output is converted using an external measurement resistor RM.

Standards & Compliance

Validated compliance by reference

Standards are displayed only where they are supported by the controlled datasheets.

IEC 61010-1Identified across the supplied API datasheets as the applicable electrical-safety reference where relevant to the end application.
EN 50178Explicitly identified on API-100P3 and API-200P3. Not generalized to 25 A and 50 A without additional validation.
CEEU conformity information and the applicable Declaration of Conformity are available from ADISENS on request.
RoHS · REACHEnvironmental declarations are available from ADISENS on request.
3 kV RMSDielectric withstand voltage specified across the supplied API references.
Applications

Where API fits

Compact isolated feedback for fast power-electronics control.

Solar InvertersFast current feedback in renewable-energy power conversion Motor DrivesAC/DC and variable-speed drive current control Industrial InvertersCompact isolated feedback for converter architectures UPS & SMPSCurrent measurement in power-supply systems Energy StorageBattery chargers and energy-storage converters Industrial EquipmentCompact isolated current-feedback assemblies
Selection support

Need help selecting the right API?

Share your nominal current, measuring range and converter requirements with our technical team.

Request Technical Support →
Custom engineering

Need a different current range?

ADISENS can review custom current ratings and integration requirements for project-specific designs.

Request a Custom Solution