Highly integrated low-side current-measurement amplifier simplifies high-accuracy sensing

高度集成的低邊電流檢測(cè)放大器簡(jiǎn)化了高精度傳感

STMicroelectronics’ TSC1801 low-side current-measurement amplifier integrates matched resistors to set the gain, which simplifies the circuit design, saves bill-of-materials costs, and ensures gain accuracy within 0.15% over the entire temperature range. The fixed gain also eliminates production trimming of external resistors.

意法半導(dǎo)體的TSC1801 低邊電流檢測(cè)放大器集成了匹配的電阻器來(lái)設(shè)置增益，在簡(jiǎn)化電路設(shè)計(jì)的同時(shí)，還節(jié)省了材料成本，并確保在整個(gè)溫度范圍內(nèi)增益精度在0.15%以?xún)?nèi)。不僅如此，固定增益還消除了外部電阻器的生產(chǎn)微調(diào)。

Combining very high accuracy and wide bandwidth, the TSC1801 is used for motor control, solar power conditioning, high-bandwidth current sensing, and automotive power conditioning. The first gain value offered is 20V/V, with 5V/V and 50V/V models to follow.

TSC1801結(jié)合了極高的精度和寬帶寬，可用于電機(jī)控制、太陽(yáng)能調(diào)節(jié)、高帶寬電流檢測(cè)和汽車(chē)功率調(diào)節(jié)。其提供的第一個(gè)增益值是20V/V，隨后是5V/V和50V/V型號(hào)。

Capable of bidirectional current sensing, the amplifier is optimized for use with precision low-value shunt (sense) resistors at low common-mode voltages. The architecture, dedicated to low-side sensing, permits tightly controlled parameters, including total output error better than 0.5% and offset voltage of ±200μV (max).

該放大器能夠進(jìn)行雙向電流檢測(cè)，經(jīng)優(yōu)化可在低共模電壓下搭配使用精密低值分流（檢測(cè)）電阻器。該架構(gòu)專(zhuān)門(mén)用于低邊檢測(cè)，可嚴(yán)格控制參數(shù)，包括優(yōu)于0.5%的總輸出誤差和±200μV（最大）的偏移電壓。

The TSC1801’s 2.1MHz bandwidth rating allows pulse-by-pulse current control even in very high-frequency power-management systems, translating to tangible benefits such as smoother torque adjustment for lower vibration in motor drives. The amplifier’s fast response also ensures rapid over-current detection, protecting sensitive output-stage components against being damaged in the event of a fault.

TSC1801的2.1MHz帶寬額定值允許在非常高頻的電源管理系統(tǒng)中進(jìn)行逐脈沖電流控制，從而帶來(lái)切實(shí)的好處（例如更平滑的扭矩調(diào)整，以降低電機(jī)驅(qū)動(dòng)器的振動(dòng)）。放大器的快速響應(yīng)還確保了快速的過(guò)電流檢測(cè)，保護(hù)敏感的輸出級(jí)組件在發(fā)生故障時(shí)免受損壞。

The device can accommodate a wide supply voltage range (2.0V to 5.5V) with an operating temperature range of -40°C to +125°C. Automotive versions are available, qualified and characterized according to AEC-Q100 and Q003 or equivalent, with advanced screening according to AEC Q001 and Q002 or equivalent.

器件可適應(yīng)較寬的電源電壓范圍（2.0V至5.5V），工作溫度范圍為-40°C至+125°C。另有車(chē)規(guī)級(jí)版本提供，已根據(jù)AEC-Q100和Q003或同等標(biāo)準(zhǔn)進(jìn)行了認(rèn)證和鑒定，同時(shí)依照AEC Q001和Q002或同等標(biāo)準(zhǔn)進(jìn)行了高級(jí)篩選。

In addition to its use in automotive and motor-control applications, the TSC1801 is expected to find applications in industrial, server and telecom infrastructure power conversion, power factor correction and high-accuracy signal conditioning.

除汽車(chē)和電機(jī)控制領(lǐng)域外，TSC1801還有望在工業(yè)、服務(wù)器和電信基礎(chǔ)設(shè)施的功率轉(zhuǎn)換、功率因數(shù)校正和高精度信號(hào)調(diào)理中得到應(yīng)用。

The industrial-grade TSC1801BILT with fixed gain of 20V/V is in production now in a 6-lead SOT23 dual-in-line package, priced from $0.54 for orders of 1000 pieces. The automotive-grade version will be available in Q2 2025.

工業(yè)級(jí) TSC1801BILT（固定增益20V/V）現(xiàn)已進(jìn)入量產(chǎn)階段，采用6引腳SOT23雙列直插式封裝；千片起訂單價(jià)0.54美元。其車(chē)規(guī)級(jí)版本將于2025年第2季度上市。

Need more low-side current sense amplifiers? Explore our selection of cutting-edge current sensing solutions.

是否需要更多低邊電流檢測(cè)放大器？探索我們精選的尖端電流檢測(cè)解決方案。

For further information please visit:www.st.com/low-side-current-sensing

如需了解更多信息，請(qǐng)?jiān)L問(wèn)：www.st.com/low-side-current-sensing