Check out this total solution for single channel isolated current sense created for automotive applications including high voltage DC/DC power supplies and 3-phase BLDC motor solutions. TI’s solution includes off-the-shelf isolated power eliminating the need for custom magnetics. The Isolated Current Sense Solution enables a small form factor and includes a reference design, development kit, tools and support for faster time-to-market.
The AMC1200-Q1 is a precision isolation amplifier with the output separated from the input circuitry by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier is certified to provide galvanic isolation of up to 4250 VPEAK according to UL1577 and VDE V 0884-10. Used in conjunction with isolated power supplies, this device prevents noise currents on a high common-mode voltage line from entering the local ground and interfering with or damaging sensitive circuitry.
The input of the AMC1200-Q1 is optimized for direct connection to shunt resistors or other low-voltage level signal sources. The performance of the device supports accurate current control, resulting in systemlevel power saving and (especially in motor-control applications) lower torque ripple. The common-mode voltage of the output signal is automatically adjusted to either the 3-V or 5-V low-side supply.
The AMC1200-Q1 is available in a wide-body, 8-pin SOIC package (DWV) and a gullwing, 8-pin SOP package (DUB).
|Common Mode Rejection Ratio (Typ) (dB)|
|Isolation Working Voltage VIOWM (rms) (V)|
|Isolation Transient Overvoltage VIOTM (Peak) (V)|
|Small Signal Bandwidth (Typ) (kHz)|
|Leakage Current at 240V/60Hz (Max) (uArms)|
|Gain Non-Linearity (+/-) (Max) (%)|
|CMTI (Min) (kV/µs)|
|Operating Temperature Range (C)|
|Approx. Price (US$)|
| 8SOIC |
| 8SOIC |
| 8SOIC |
|8SOIC||16CDIP SB|| 8PDIP |
| 8PDIP |
|-40 to 105||-40 to 105||-40 to 105||-40 to 125||-55 to 125||-25 to 85||-25 to 85|
|2.60 | 1ku||2.00 | 1ku||2.20 | 1ku||2.90 | 1ku||109.70 | 1ku||11.39 | 1ku||8.72 | 1ku|
|Sample & Buy||Sample & Buy||Sample & Buy||Sample & Buy||Sample & Buy||Sample & Buy||Sample & Buy|
|Catalog||AMC1200||TI's standard catalog product|