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SS9176CS-10TR датащи(PDF) 1 Page - Silicon Standard Corp. |
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SS9176CS-10TR датащи(HTML) 1 Page - Silicon Standard Corp. |
1 / 12 page www.SiliconStandard.com 1 of 12 SS9175/6 Dual Synchronous DC/DC Controllers With Current Sharing Circuitry FEATURES DESCRIPTION Two sets of integrated MOSFET drivers Fixed operating frequency of 300, 600 or 1000kHz Dual-phase current-sharing controller to minimize ripple and improve transient response Wide input supply range: 4.5V to 16V Programmable output as low as 0.8v Internal error amplifier reference voltage of 0.7V +/- 1% Programmable over-current protection (OCP) with 50% fold-back Over-voltage protection (OVP) Soft-start Remote ON/OFF control High voltage pin up to 30V for bootstrap voltage Power-good output signal provided Current-sharing balance within +/-5% matching (SS9175CS/SS9176CS) Two independent PWM controllers (SS9175) Packaged in SO-20 (9175/CS) or SO-16 (9176CS) The SS9175/6 series are dual-phase synchronous DC/DC PWM controllers for power supplies requiring a single high-current output, or two independent outputs with high conversion efficiency. They integrate two sets of internal MOSFET drivers consisting of high-side and low side driving circuits. The internal temperature-independent reference voltage is trimmed to 0.7V +/- 1%, and is connected to the error amplifier’s positive terminal for voltage feedback regulation. The over-current protection (OCP) level, with 50% fold-back, can be programmed by an external resistor. The over-voltage protection (OVP) point is fixed at 25% higher above 0.7V. The soft-start circuit ensures the duty cycle of the PWM output can be gradually and smoothly increased from zero to its desired value. The controllers can be remotely turned ON or OFF to enter into either active or standby mode, respectively. The SS9175/6 series provides three different options: The SS9175 is a 20-pin version that is designed for two independent outputs without current sharing capability. The SS9175CS is a 20-pin version designed for current sharing applications. The SS9176CS is a 16-pin version for current sharing applications . APPLICATIONS n CPU and DSP Vcore Power Supply n Graphic cards n Telecomm and datacomm POL boards n Power supplies requiring two independent outputs 12V 1.4v 5V PWRG CL1+ CL1- DH1 DL1 BST1 PGND COM VCC PWRG IN1 CL2+ CL2- DH2 DL2 BST2 BSTC COM SS/ENB GND IN2 1uF 1uF 7.5uH 1k 7.5uH 1k 2.2pF 450uF 0.22uF 50k 50k 10uF TYPICAL APPLICATION CIRCUIT Rev.2.02 12/29/2003 PRELIMINARY |
Аналогичный номер детали - SS9176CS-10TR |
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Аналогичное описание - SS9176CS-10TR |
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