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IR2175 Dataheets PDF



Part Number IR2175
Manufacturers International Rectifier
Logo International Rectifier
Description Linear Current Sensor
Datasheet IR2175 DatasheetIR2175 Datasheet (PDF)

Data Sheet No. PD60208 Rev. E IR2175(S) & (PbF) LINEAR CURRENT SENSING IC Features • • • • • • • • Floating channel up to +600V Monolithic integration Linear current feedback through shunt resistor Direct digital PWM output for easy interface Low IQBS allows the boot strap power supply Independent fast overcurrent trip signal High common mode noise immunity Input overvoltage protection for IGBT short circuit condition • Open Drain outputs • Also available LEAD-FREE Product Summary VOFFSET IQBS.

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Data Sheet No. PD60208 Rev. E IR2175(S) & (PbF) LINEAR CURRENT SENSING IC Features • • • • • • • • Floating channel up to +600V Monolithic integration Linear current feedback through shunt resistor Direct digital PWM output for easy interface Low IQBS allows the boot strap power supply Independent fast overcurrent trip signal High common mode noise immunity Input overvoltage protection for IGBT short circuit condition • Open Drain outputs • Also available LEAD-FREE Product Summary VOFFSET IQBS Vin Gain temp.drift fo Overcurrent trip signal delay Overcurrent trip level 600Vmax 2mA +/-260mVmax 20ppm/oC (typ.) 130kHz (typ.) 2µsec (typ) +/-260mV (typ.) Description The IR2175 is a monolithic current sensing IC designed for motor drive applications. It senses the motor phase current through an external shunt resistor, converts from analog to digital signal, and transfers the signal to the low side. IR’s proprietary high voltage isolation technology is implemented to enable the high bandwidth signal processing. The output format is discrete PWM to eliminate need for the A/D input interface for the IR2175. The dedicated overcurrent trip (OC) signal facilitates IGBT short circuit protection. The open-drain outputs make easy for any interface from 3.3V to 15V. S Packages 8 Lead PDIP IR2175 8 Lead SOIC IR2175S Block Diagram Up to 600V 15V PWM Output GND Overcurrent VCC PO V+ VS IR2175 COM OC VB To Motor Phase (Refer to Lead Assignments for correct pin configuration). This/These diagram(s) show electrical connections only. Please refer to our Application Notes and DesignTips for proper circuit board layout. IR2175(S) & (PbF) Absolute Maximum Ratings Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are absolute voltages referenced to COM, all currents are defined positive into any lead. The thermal resistance and power dissipation ratings are measured under board mounted and still air conditions. Symbol VS VBS VCC VIN VPO VOC dV/dt PD RthJA TJ TS TL Definition High side offset voltage High side floating supply voltage Low side and logic fixed supply voltage Maximum input voltage between VIN+ and VS Digital PWM output voltage Overcurrent output voltage Allowable offset voltage slew rate Package power dissipation @ TA ≤ +25°C Thermal resistance, junction to ambient Junction temperature Storage temperature Lead temperature (soldering, 10 seconds) 8 lead SOIC 8 lead PDIP 8 lead SOIC 8 lead PDIP Min. -0.3 -0.3 -0.3 -5 COM -0.3 COM -0.3 — — — — — — -55 — Max. 600 25 25 5 VCC +0.3 VCC +0.3 50 .625 1.0 200 125 150 150 300 Units V V/ns W °C/W °C Note 1: Capacitors are required between VB and Vs when bootstrap power is used. The external power supply, when used, is required between VB and Vs pins. Recommended Operating Conditions The output logic timing diagram is shown in figure 1. For proper operation the device should be used within the recommended conditions. Symbol VB VS VPO VOC VCC VIN TA Definition High side floating supply voltage High side floating supply offset voltage Digital PWM output voltage Overcurrent output voltage Low side and logic fixed supply voltage Input voltage between VIN+ and VS Ambient temperature Min. VS +13.0 0.3 COM COM 9.5 -260 -40 Max. VS +20 600 VCC VCC 20 +260 125 Units V mV °C 2 www.irf.com IR2175(S) & (PbF) DC Electrical Characteristics VCC = VBS = 15V, and TA = 25o unless otherwise specified. Symbol VIN VOC+ VOCVOS ∆V OS/ ∆T A G ∆G/ ∆T A ILK IQBS IQCC LIN ∆VLIN/∆TA IOPO IOCC VIN+ _ VS Definition Nominal input voltage range before saturation Overcurrent trip positive input voltage Overcurrent trip negative input voltage Input offset voltage Input offset voltage temperature drift Gain (duty cycle % per VIN) Gain temperature drift Offset supply leakage current Quiescent VBS supply current Quiescent VCC supply current Linearity (duty cycle deviation from ideal linearity curve) Linearity temperature drift Digital PWM output sink current OC output sink current Min. Typ. Max. Units Test Conditions -260 — — -10 — 155 — — — — — — 20 2 10 1 — 260 — — 10 — 165 — 50 — 0.5 1 — — — — — mA µV/ C o 260 -260 0 25 160 20 — 2 — 0.5 .005 — — — — mV VIN = 0V (Note 1) %/V ppm/ C µA mA % %/oC VO = 1V VO = 0.1V VO = 1V VO = 0.1V VB = VS = 600V VS = 0V o max gain error=5% (Note 2) Note 1: ±10mV offset represents ±1.5% duty cycle fluctuation Note 2: Gain = (full range of duty cycle in %) / (full input voltage range). AC Electrical Characteristics VCC = VBS = 15V, and TA = 25o unless otherwise specified. Symbol Definition Propagation delay characteristics fo ∆ f/ ∆T A Dmin Dmax BW PHS tdoc twoc Carrier frequency output Temperature drift of carrier frequency Minimum duty Maximum duty fo bandwidth Phase shift at 1kHz Propagation delay time of OC Low true pulse width of OC Min. Typ. Max. Units Test Conditions 100 — — — — — 1 — 130 500 9 91 15 -10 2 1.5 180 — — — — — — — kHz ppm/oC % % kHz o figure 1 VIN = 0 &.


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