IR1176 International Rectifier, IR1176 Datasheet
IR1176
Specifications of IR1176
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IR1176 Summary of contents
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... High speed operation - 2MHz • Adaptable to multiple topologies Description The IR1176 is a high speed CMOS controller designed to drive N-channel power MOSFETs used as synchro- nous rectifiers in high current, high frequency forward converters with output voltages equal or below 5V Schmitt trigger inputs with double pulse suppression allow the controller to operate in noisy environments ...
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... IR1176 Absolute Maximum Ratings Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. Symbol Definition V Supply voltage dd I Input clamp current in P Power dissipation D Rth Thermal resistance JC Rth Thermal resistance JA T Junction temperature J T Storage temperature S T Lead temperature (soldering, 10 seconds) ...
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... Required bias resistor (1%) Vbias Voltage at Rbias pin Tjitter Phase-lock loop output jitter Ichgpump Charge pump output current (at VFLTR pin) Vchgpump Charge pump output voltage (at VFLTR pin) Kvco_dc PLL Vco DC gain (per design) www.irf.com IR1176 Min. Typ. Max. Units 4.0 — 5.25 — 100 — ...
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... RADV1 6 15 VFLTR2 VFLTRI 7 14 RVCO1 RVCO2 AVDD AVSS 10 11 UVSET RBIAS IR1176SS SOIC (wide body *VDD VSS 3 18 DTOUT1 DTOUT2 4 17 DTIN1 DTIN2 5 16 RADV2 RADV1 6 15 VFLTR2 VFLTRI 7 14 RVCO1 RVCO2 AVDD AVSS 10 11 UVSET RBIAS IR1176 PDIP www.irf.com ...
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... Fig. 1 Typical application circuit when supply Vout < 5.0 V Fig. 2 Typical application circuit when supply Vout = 5.0 V www.irf.com IR1176 ...
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... IR1176 Fig. 3 Gate drive characteristics and definitions Phase Lock Loop Design Equations Resistor to set VCO Ceter Frequency: Rvco (KΩ) = [1E2 x Vchgpump(V Example (A): Choose Vchgpump = 1.5V, desired frequency (fvco) = 300KHz Rvco = [1E2 x 1.5 /300 KΩ Small Signal gain for VCO: Kvco_ac (KHz/Volt) = 1E2 x Kvco_dc (KHz/Volt)/Rvco(KΩ) ...
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... W here Rdt is resistance between pins DTIN1 and DTOUT1 or DTIN2 and DTOUT2. Cdt DTI N1 or DTI ground. Example D: Rd=2KW and Cdt=100pF will result in Td=148.35nsec. Fig. 4 PLL loop filter component definitions www.irf.com Ichpump(uA) x Kvco_ac(KHz/V) / C(nF) Cf=C/ E (KOhms) x C(nF) x fn(KHz) Tadv(nsec) = RADV (KOhms)* IR1176 + 6 + 6=106 nsec. 7 ...
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... IR1176 8 IR1176 Fig. 5 IR1176 Block Diagram www.irf.com ...
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... Response at 25 T_DT vs R_DT 100pF 500 400 300 200 100 0 0 10K 20K 30K resistance Response at 25 T_ADV vs R_ADV www.irf.com 10K - 40K 50K - IR1176 - temperature Temperature Response T_DT vs R_DT 100pF temperature Temperature Response T_ADV vs R_ADV 9 ...
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... IR1176 Case Outline 20 Lead Surface Mount (SSOP-20) 10 01-6057 00 01-3078 00 (MS013AC) www.irf.com ...
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... Case Outline www.irf.com 20 Lead SOIC IR1176 01-6070 00 01-3080 00 (MS013AC) 11 ...
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... IR1176 Case Outline WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 12 20 Lead PDIP Data and specifications subject to change without notice. 01-6069 00 01-3079 00 (MS001AD) 1/7/2002 www.irf.com ...