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IRS2573DSPBF Datasheet(PDF) 8 Page - International Rectifier |
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IRS2573DSPBF Datasheet(HTML) 8 Page - International Rectifier |
8 / 28 page IRS2573D www.irf.com © 2009 International Rectifier 8 Electrical Characteristics VCC = VB1S1 = VB2S2 = VBBSB = VBIAS = 14V +/- 0.25V, CLO1 = CLO2 = CIGN = CHO1 = CHO2 = BUCK = 1000pF, RIREF = 20kOhm, ROC = 10kOhm, ROV = 50kOhm, VRST = COM, CS = VSB, CT = TIGN = TCLK = VSENSE = ISENSE = PCOMP = ICOMP = ZX = TOFF = COM, TA = 25C unless otherwise specified. Symbol Definition Min Typ Max Units Test Conditions Buck Control Characteristics IPCOMP SOURCE OTA1 Error Amplifier Output Current Sourcing 28 40 52 VPCOMP=7V VVSENSE = VISENSE = VVSENSE PCOMP=0uA – 0.3V IPCOMP SINK OTA1 Error Amplifier Output Current Sinking 28 40 52 VPCOMP=7V VVSENSE = VISENSE = VVSENSEPCOMP=0uA + 0.3V IICOMP SOURCE OTA2 Error Amplifier Output Current Sourcing 28 40 52 VICOMP=7V VISENSE = VISENSEICOMP=0uA – 0.5V IICOMP SINK OTA2 Error Amplifier Output Current Sinking 28 40 52 uA VICOMP=7V VISENSE = VISENSEICOMP=0uA + 0.5V VCOMPOH OTA1,2 Error Amplifier Output Voltage Swing (high state) --- 12.5 --- V IPCOMP = IPCOMP_SOURCE – 10uA, or IICOMP = IICOMP_SOURCE – 10uA KMULT Internal Multiplier Gain KMULT = VIREF/ ( 2x VVSENSE x VISENSE ) --- 2.0 --- VVSENSE = VVSENSE(PCOMP = 0uA), VISENSE = 500mV PSENSE VVSENSE x VISENSE 0.465 0.50 0.535 VVSENSE = 1V VISENSE = 500mV VPCOMPTH PCOMP pin buck on/off threshold voltage --- 0.2 --- VICOMP = 2V VICOMPTH- ICOMP pin buck off threshold voltage --- 0.2 --- VPCOMP = 2V VICOMPTH+ ICOMP pin buck on threshold voltage --- 0.5 --- VPCOMP = 2V VZX ZX pin Comparator Threshold Voltage --- 2.0 --- V VPCOMP = VICOMP = 7V VZXhys ZX pin Comparator Hysteresis --- 400 --- mV VPCOMP = VICOMP = 7V VZXclamp ZX pin Clamp Voltage (high state) --- 6.5 --- V IZX = 5mA ITOFF TOFF pin Output Current 91 110 129 uA VBUCK = VSB VTOFF TOFF pin Comparator Threshold Voltage 1.93 2.05 2.17 V VPCOMP = VICOMP = 7V CTOFF = 1nF Full-Bridge Oscillator Characteristics fOSC Full-Bridge oscillator frequency 160 200 240 Hz d Oscillator duty cycle 49 50 51 % tdLO1,2 LO1, LO2 output deadtime 0.8 1.2 1.5 tdHO1,2 HO1, HO2 output deadtime 0.8 1.2 1.5 us CCT = 47nF VCT+ CT pin upper threshold voltage --- 4.0 --- VCT- CT pin lower threshold voltage --- 2.0 --- V ICT SOURCE CT pin sourcing current --- 80 --- VCT = 1.5V ICT SINK CT pin sinking current --- 80 --- uA VCT = 4.5V Ignition Timer Characteristics TIGNON IGN pin on-time 18 21 24 TIGNOFF IGN pin off-time 57 64 71 sec CTIGN = 1uF MODE = IGN VTIGN+ TIGN pin upper threshold voltage --- 4.0 --- VTIGN- TIGN pin lower threshold voltage --- 2.0 --- V ITIGN SOURCE TIGN pin sourcing current --- 6 --- VTIGN = 1.5V ITIGN SINK TIGN pin sinking current --- 6 --- uA VTIGN = 4.5V |
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