REFSENS002
REFSENS002 - Reference Design
Reference Board forLow-side Current Sensing Circuit
In the fields of automobiles and industrial equipment, low-side current sensing circuits are used for functions such as current (voltage) control, overcurrent limit, and remaining battery level detection. Shunt-resistor low-side current sensing circuits are the most general solution. The REFSENS002 is a shunt resistor and low offset operational amplifier current sensing reference design. Design data, including heat generation evaluations, is published on Web site, so please use it as a design reference to help reduce design man-hours.
Design Resources
Specifications
| Board Number | Input voltage (equipped device) | Input voltage (sensing line) | Output system | Current Sense Range | Size | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| REFSENS002-EVK-001 | 2.7 to 5.5V (LMR1802G-LB) | ～26V (Terminal protection by Zener diode) | Analog voltage value | up to 100A | 90mm x 80mm |
Distribution Inventory
| Board Number | Distributor | Quantity Available |
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Key Components
| Board Number | Product Category | Part Number | Datasheet | Status | SPICE | LTspice® ? | Thermal Model | Symbol & Footprint | 3D STEP | Samacsys ECAD Library | Calc Tool | ROHM Solution Simulator |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| REFSENS002-EVK-001 | Operational Amplifiers | LMR1802G-LB | - | Recommended | - | - | Solution Simulator | |||||
| REFSENS002-EVK-001 | Operational Amplifiers | LMR1802YG-C | - | Recommended | - | - | Solution Simulator | |||||
| REFSENS002-EVK-001 | Current Detection Resistors | PSR400ITQFJ2L00 | - | Recommended | - | Solution Simulator | ||||||
| REFSENS002-EVK-001 | Zener Diodes | TDZV5.1 | - | Recommended | - | - | - | - | - |