RT9237CS Richtek Technology Corporation, RT9237CS Datasheet
RT9237CS
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RT9237CS Summary of contents
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... Differential Sense Input Hiccup Mode Over Current Protection Programmable Under Voltage Lockout and Soft Start High Ripple Frequency, (Channel Frequency 200KHz) Times Channel Number Pin Configurations Part Number RT9237CS (Plastic SOP-28) current droop RT9237 Channel Current Sharing Pin Configurations TOP VIEW ...
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RT9237 Absolute Maximum Ratings Supply Voltage Input, Output or I/O Voltage Ambient Temperature Range Operating Junction Temperature Range Storage Temperature Range Power Dissipation SOP-28 Package Thermal Resistance SOP-28, θ JA Lead Temperature (Soldering, 10 sec.) ...
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Parameter Protection IMAX Voltage SS Current Over-Voltage Trip (VSEN/DACOUT) Power Good Upper Threshold (VSEN/DACOUT) Lower Threshold (VSEN/DACOUT) Function Block Diagram DVD Power On Reset VDD PGOOD 120% VDAC VID0 VID1 108% DAC VID2 VDAC VID3 VID4 92% VDAC VSEN ADJ ...
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RT9237 VID4 VID3 ...
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Typical Application Circuit DS9237-00 January 2002 Preliminary RT9237 www.richtek-ic.com.tw 5 ...
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RT9237 Functional Pin Description VID4, VID3, VID2, VID1 and VID0 ( Pin1,2,3,4,5) DAC voltage identification inputs for VRM9.0. These pins are TTL-compatible and internally pulled to VDD if left open. COMP (Pin 6) Output of the error amplifier and input ...
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Simplified Block Diagram Control Loops for a Two Phase Converter VDAC Droop ADJ Control EA FB GND COMP R LOAD Voltage loop DS9237-00 January 2002 Preliminary PWMCP Current Balance PWMCP Processor SS Control OUT PWM1 PWM Logic ...
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RT9237 Operation RT9237 is a multi-phase DC/DC controller that precisely regulates CPU core voltage and balances the current of different power channels. The converter consists of RT9237 and its companion MOSFET driver provide high quality CPU power and all protection ...
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I × L The sensing circuit gets cancel the voltage drop caused amplifier input bias current. I just before low side MOSFET turns off (See Fig.2). Therefore, × ...
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RT9237 3-Phase Converter and Components Function Grouping VID Compensation & Offset Droop Setting 12V Driver Power UVLO Ramp Setting OCP Setting Design Procedure Suggestion Voltage Loop setting a. Output filter pole and zero (Inductor, output capacitor value & ESR) b. ...
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Design Example Three phase converter V CORE load current = 60Amp, droop voltage at full load = 120mV, OCP trip point for each power stage = 30Amp (at Sample/Hold), low side MOSFET R = 6mΩ at room temperature ...
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RT9237 Layout Guide Layout Guide Place the high-power switching components first, and separate them from sensitive nodes. 1. Most critical path: the current sense circuit is the most sensitive part of the converter. The current sense resistors tied to ISP1,2,3,4 ...
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Next to IC Pin(s) +12V C BP PVCC VCC C RT9600 PHASE C Locate near Transistor DS9237-00 January 2002 Preliminary +12V or +5V Use Individual Metal Runs for Each Channel to help Isolate BOOT Output Stages CORE ...
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RT9237 Package Information C Symbol www.richtek-ic.com.tw 14 Preliminary Dimensions In Millimeters Min Max 17.704 18.110 7.391 7.595 2.362 2.642 0.330 0.508 1.194 1.346 0.229 0.330 0.102 ...
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RICHTEK TECHNOLOGY CORP. Headquarter 6F, No. 35, Hsintai Road, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5510047 Fax: (8863)5537749 DS9237-00 January 2002 Preliminary RICHTEK TECHNOLOGY CORP. Taipei Office (Marketing) 8F-1, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, ...