IR2177 International Rectifier Corp., IR2177 Datasheet
IR2177
Related parts for IR2177
IR2177 Summary of contents
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... Phase Current Sensor IC for AC motor control Features • Floating channel up to 600 V for IR2177 & 1200 V for IR2277 • Synchronous sampling measurement system • High PWM noise (ripple) rejection capability • Digital PWM output • Fast Over Current detection • Suitable for bootstrap power supplies • ...
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... Note 1: Shorted Note 2: Pull-Up Resistor all currents are defined positive into any lead. The Thermal Resistance and Power SS Definition IR2277 IR2177 Definition - IR2277 IR2177 Using PO Using OUT IR2277S/IR2177S(PbF) Min. Max. Units - 0.3 1225 V - 0.3 625 - ...
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... Min. Typ. Max. 1 2.2 IR2277 IR2177 Min. Typ. Max. 250 -250 2.2 0.8 0.2 -18 -20 300 470 6 25 SYNC R sync V SS Figure 2: Sync input circuit IR2277S/IR2177S(PbF) Test Units Conditions f = 10kHz, sync mA 20kHz f = 10kHz, sync 6 mA 20kHz 1200V µ 600V B S Test ...
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... Note1: Refer to PO output description for channels definition 4 Min. Typ. -50 TBD -10 -38 -40.5 TBD ) rejection 0.2 S 0.07 TBD 0 Figure 3: PO and OC open collector circuit IR2277S/IR2177S(PbF) Max. Units Conditions R pull-up f sync threshold Ext supply=5V (See Figure 6) µV/°C f sync 10 mV See Figure 6 -42.5 %/ %/(V º ...
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... Note1: Refer to PO output description for channels definition 5 Min. Typ. Max -100 TBD -20% 2VR +20% TBD S 100 0.3 0.7 TBD 30 100 +0 IR2277S/IR2177S(PbF) Test Units Conditions kΩ 8kHz, 20 sync 50 mV kHz Measured by µV / ºC analog output f = 8kHz, 20 sync kHz V = º ...
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... IR2277S/IR2177S(PbF) Test Max. Units Conditions 20 kHz 20 ksample/sec kHz µ =+ =-V in 4.7 µs See Figure 4 See Figure 4 0.5 µ NOTE 2 1 V/µs C out 30 µ ...
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... V max min SYNC OUT Figure 4: OC timing diagram SR (PO full response time) SR OUT (OUT full response time) Figure 5: timing diagram IR2277S/IR2177S(PbF settl www.irf.com ...
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... V max min SYNC 20% Figure 6: ∆offset between two consecutive samples measured POs1 P POs0 20% 20 POs POs1 POs0 IR2277S/IR2177S(PbF) Supply=5V Vth=2.75V POs1 P POs0 20% www.irf.com ...
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... PWM output (open drain) 8 Sync DSP synchronization signal connection connection 11 G0 Integrator gain lsb 12 G1 Integrator gain msb 13 V High side return Negative sense input IN- Positive sense input High side supply B 9 IR2277S/IR2177S(PbF) SOIC16WB Description www.irf.com ...
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... Timing and logic state diagrams description ** See OC and PO detailed descriptions below in this document Functional block diagram 10 IR2277S/IR2177S(PbF) www.irf.com ...
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... PO duty cycle (D ) swings between 10% and 30%. n Zero input voltage corresponds to 20% duty cycle. 11 IR2277S/IR2177S(PbF) A residual offset can be read in PO duty cycle according to V characteristics). According to Figure 8, it can be assumed that odd cycles are represented by SYNC at high level (let’s name ...
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... Cycle 2 T off_cycle2 T cycle2 off _ cycle cycle 2 Figure 8: PO Duty Cycle Low voltage O ver current detection Figure 9: Over current block diagram IR2277S/IR2177S(PbF) Cycle 3 Cycle 4 T off_cycle3 T T cycle3 off_cycle4 off _ cycle cycle supply ...
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... curve ≤ settl f SYNC IR2277S/IR2177S(PbF) OUT aos ( measured pos instead of OUT) Figure 10: Input offset definition OUT OUT Figure 11: Gain definition OUT Linearity Error G ...
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... OUT pin swings from output (referred follows Eq Eq. 3 The same equation can be referred to V follows in Eq. 4: Eq. 4 OUT Figure 15: ideal OUT PO) must the analog RH IR2277S/IR2177S(PbF ⋅ − ⋅ OUT − ...
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... Filter AC characteristic IR2177/2277 signal path can be considered as composed by three stages in series (see Figure 17). The first two stages perform the filtering action. Stage 1 (input filter) implements the filtering action originating the transfer function shown in Figure 18. The input filter is a self-adaptive reset integrator which performs an accurate ripple cancellation ...
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... Figure 18: Input filter transfer function (10 kHz PWM) 16 IR2277S/IR2177S(PbF) www.irf.com ...
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... SYNC 2 SYNC 2 2 Sizing tips 2.1 Bootstrap supply The V BS1,2,3 side drivers circuitry of the IR2277S/IR2177S. V supply sit on top of the V floating. The bootstrap method to generate V be used with IR2277S/IR2177S current sensors. The bootstrap supply is formed by a diode and a capacitor connected as in Figure 20. ...
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... Bootstrap Diode The diode must have a BV> 600V (or 1200V CEon depending on application) and a fast recovery time (t < 100 ns) to minimize the amount of charge fed . rr BS back from the bootstrap capacitor to V IR2277S/IR2177S(PbF the IGBT is not loaded while being LOAD can be neglected CE = − ...
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... Figure 22: Recommended shunt connection 3.4 Supply capacitors The supply capacitors must be placed as close as possible to the device pins (V ground tied supply, V supply) in order to minimize parasitic traces inductance/resistance IR2277S/IR2177S(PbF) and V to shunt paths and star- in+ in close to the shunt resistor as S in- ...
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... Case Outline WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 20 IR2277S/IR2177S(PbF) This part has been qualified for the Industrial Market Data and specifications subject to change without notice. 8/18/2005 www.irf.com ...