REFSENS002
REFSENS002 - Reference Design
100A分流电阻和运放电流检测电路 参考设想
在汽车和产业装备范畴,低边电流检测电路用于电流(电压)节制、过流限定和残剩电池电量检测等功效。经由过程分流电阻和电流检测缩小器来完成的低边电流检测电路长短经常见的。REFSENS002 是分流电阻器和电流检测缩小器的电流传感器参考设想。同时ROHM还供给设想数据和参考板的发卖以便利客户停止参考设想,助力客户削减设想工时。此后将打算宣布电流检测规模高达50A的高精度参考设想板。
- The simplest current sense circuit with shunt resistor and operational amplifier (LMR1802G)
- High power shunt resistor PSR400 2mΩ 4 in parallel
- Current sense range: up to 100A
- Thermally designed to keep each component within its absolute maximum rating even
- at a detected current Iin = 100A and an ambient temperature Ta = 85°C
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 |
|---|
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 | - | - | - | - | - |