IR1175 International Rectifier, IR1175 Datasheet
IR1175
Specifications of IR1175
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IR1175 Summary of contents
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... High speed operation - 2MHz n Adaptable to multiple topologies (such as single- ended forward, double-ended forward) Description The IR1175 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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... IR1175 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 (SSOP-20) D Rth Thermal resistance (SSOP-20) junction-to-case JC Rth Thermal resistance (SSOP-20) junction-to-ambient JA T Junction temperature ...
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... Required bias resistor 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 www.irf.com IR1175 Min. Typ. Max. Units 4.0 — 5.5 — 100 — ...
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... RADV1 6 15 VFLTR2 VFLTRI 7 14 RVCO1 RVCO2 AVDD AVSS 10 11 UVSET RBIAS IR1175SS 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 IR1175 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 IR1175 ...
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... IR1175 Fig. 3 Gate drive characteristics and definitions Phase Lock Loop Design Equations Resistor to set VCO Ceter Frequency: Rvco (KΩ) = 143 x [Vchgpump(V Example (A): Choose Vchgpump = 1.5V, desired frequency (fvco) = 300KHz Rvco = 143 x [1.5 /300 Hz/Volt = 44.33 KΩ Small Signal gain for VCO: Kvco_ac (KHz/Volt) = 1E3 x Kvco_dc (KHz/Volt)/(7 x 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. Exampl e D: Rdt=10Kohm s and Cdt=22pF esul Td=156.8 nsec 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)* IR1175 7 ...
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... IR1175 8 Fig. 5 IR1175 Block Diagram www.irf.com ...
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... Case Outline 20 Lead Surface Mount (SSOP-20) www.irf.com IR1175 01-6057 00 01-3078 00 (MS013AC) 9 ...
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... IR1175 Case Outline 10 20 Lead SOIC 01-6070 00 01-3080 00 (MS013AC) www.irf.com ...
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... Case Outline WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 www.irf.com 20 Lead PDIP Data and specifications subject to change without notice. IR1175 01-6069 00 01-3079 00 (MS001AD) 1/7/2002 11 ...