SI9137 Vishay, SI9137 Datasheet
SI9137
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SI9137 Summary of contents
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... D Telecommunications Infrastructure D Distributed Power Conversion compensation networks and automatic boot-strapping. It requires minimum external components and is capable of achieving conversion efficiencies approaching 95%. The Si9137 is available in both standard and lead (Pb)-free 28-pin SSOP package and specified to operate over the extended commercial (0_C to 90_C) temperature range. 5-V 3.3-V ...
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... Si9137 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS V to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND V to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L BST , BST , BSTFY to GND . . . . . . . . . . . . . . . . . . . . . . . . . . Short to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BST ; LX to BST ; LXFY to BSTFY . . . . . . . . . . . . . . . Inputs/Outputs to GND ( CSP, CSN ...
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... With Respect to 2nd SMPS Lockout Time Done FBFY = 3.3 V RUN/STOP, SEQ DL3, DH3, DL5, DH5 Forced High or Low DHFY, DLFY Forced High or Low RESET SINK RESET = 5 V Si9137 Vishay Siliconix Limits Min Typ Max Unit 3.24 3.30 3.36 V ...
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... Lead (Pb)-Free 3 Part Number Part Number Si9137LG Si9137LG-T1 Si9137LG-T1—E3 Evaluation Board 5 Si9137DB Description SEQ = GND: 5-V then 3.3-V then adjustable 5- to 12-V output SEQ = V : 3.3-V then 5-V then adjustable 5- to 12-V output L SEQ = REF: 3.3-V then 5-V then adjustable 5- to 12-V output, high impedance error detect mode. Temperature Range ...
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... Efficiency vs 12-V Adjustable Output Current (Output Set Frequency = 300 kHz 3 Load 60 55 0.001 0.01 0.1 Current (A) Si9137 Vishay Siliconix Efficiency vs. 5.0-V Output Current Frequency = 300 kHz 3 Load 0.01 0.1 1 Current ( www.vishay.com 10 5 ...
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... Si9137 Vishay Siliconix TYPICAL WAVEFORMS PWM Loading 5-V Converter ( 20.0 ms/div PSM to PWM 5-V Converter ( 100 ms/div PSM Operation 5-V Converter ( 10.0 ms/div www.vishay.com 6 PWM Unloading 5-V Converter V OUT (100 mV/div) Load (1 A/div) PWM to PSM 5-V Converter V OUT (100 mV/div) Load (1 A/div) ...
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... V OUT (100 mV/div) Load (1 A/div) PWM to PSM 3-V Converter V OUT (100 mV/div) Load (1 A/div) 250-mA Transient Adjustable Converter (Output Set 200 ms/div Si9137 Vishay Siliconix ( OUT (100 mV/div) Load (1 A/div) 20.0 ms/div ( OUT (100 mV/div) Load (1 A/div) 50 ...
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... Si9137 Vishay Siliconix STANDARD APPLICATION CIRCUIT Si4416DY 0. +3.3 V OUT C6 330 PGND* GND* +3 C11 1 mF *PGND and GND planes should be connected to a single point ground. www.vishay.com 8 D1A CMPD2836 D1B 0 0.1 mF BST ...
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... Low-side gate drive is Applied The converter is enabled V is applied IN LDO is activated after V IN applied REF circuit is activated after V becomes available After V goes above 2.4 V, REF the converter is turned on Oscillator is activated Slow soft-start gradually increases the maximum inductor current is Applied www.vishay.com Si9137 ...
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... Si9137 Vishay Siliconix TIMING DIAGRAMS RESET V REF OSC EN (Sysmon EN) OSC (SS) max www.vishay.com FIGURE 4. Power Off Sequence ) L 3.4 V Document Number: 70874 S-40808—Rev. C, 26-Apr-04 ...
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... SEQ RUN/STOP PWM Comparator − Logic Control + Pulse Skipping Control − + Current Limit t Vishay Siliconix FB 5 CS_ FB_ R X Internal voltage divider is only used on 5-V output BST_ DH DH LX_ BBM FBFY BSTFY DH LXFY DHFY DL DLFY Si9137 www.vishay.com 11 ...
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... RESET Power Good Input Voltage Monitor). The Si9137 converts a 5.5-V to 30-V input voltage to five different output voltages; two buck (step-down) high current, PWM, switch-mode supplies of 3.3 V and 5 V, one “flyback” PWM switch-mode supply adjustable from one precision 3 ...
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... The Si9137 features clock cycle by clock cycle current limiting capability. Flyback Converter Operation: The Si9137 has an adjustable 5-V to 12-V output non-isolated buck-boost converter, called for brevity a flyback. The input voltage range can span above or below the regulated output voltage. It consists of two n-channel MOSFET switches that are turned on and off in phase, and two diodes ...
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... SMPS outputs to ground. www.vishay.com 14 Output Undervoltage Protection Each of the Si9137 5-V and 3.3-V SMPS outputs has an undervoltage protection circuit that is activated 6,144 clock cycles (20.48 ms) after the SMPS is enabled. If either SMPS output is typically under 70% of the nominal value, all SMPSs are latched off and their outputs are clamped to ground by the synchronous rectifier MOSFETs ...
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... Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right ...