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IR3093MTR Datasheet(PDF) 2 Page - International Rectifier |
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IR3093MTR Datasheet(HTML) 2 Page - International Rectifier |
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2 / 39 page  IR3093 Page 2 of 39 07/15/04 PIN DESCRIPTION PIN# PIN SYMBOL PIN DESCRIPTION 1 VID3 Inputs to VID D to A Converter 2 VID4 Inputs to VID D to A Converter 3 ROSC Connect a resistor to VOSNS- to program oscillator frequency and FB, OCSET, BBFB, and VDAC bias currents 4 VOSNS- Remote Sense Input. Connect to ground at the Load. 5 OCSET Programs the hiccup over-current threshold through an external resistor tied to VDAC and an internal current source. 6 VDAC Regulated voltage programmed by the VID inputs. Current Sensing and Over Current Protection are referenced to this pin. Connect an external RC network to VOSNS- to program Dynamic VID slew rate. 7 VDRP Buffered IIN signal. Connect an external RC network to FB to program converter output impedance 8 FB Inverting input to the Error Amplifier. Converter output voltage is offset from the VDAC voltage through an external resistor connected to the converter output voltage at the load and an internal current source. Bias current is a function of ROSC. Also OVP sense 9 EAOUT Output of the Error Amplifier 10 SS/DEL Controls Converter Softstart, Power Good, and Over-Current Timing. Connect an external capacitor to LGND to program the timing. 11 SCOMP2 Compensation for the Current Share control loop. Connect a capacitor to ground to set the control loop’s bandwidth. Phase 2 is forced to match phase 1’s current. 12 SCOMP3 Compensation for the Current Share control loop. Connect a capacitor to ground to set the control loop’s bandwidth. Phase 3 is forced to match phase 1’s current. 13 LGND Local Ground and IC substrate connection 14 SETBIAS External resistor to ground sets voltage at BIASOUT pin. Bias current is a function of ROSC. 15 VCC Power for internal circuitry and source for BIASOUT regulator 16 CSINP3 Non-inverting input to the Phase 3 Current Sense Amplifier. 17 CSINM3 Inverting input to the Phase 3 Current Sense Amplifier. 18 BIASOUT 200mA open-looped regulated voltage set by SETBIAS for GATE drive bias. 19 PWRGD Open Collector output that drives low during Softstart or any fault condition. Connect external pull-up. 20 CSINP2 Non-inverting input to the Phase 2 Current Sense Amplifier. 21 CSINM2 Inverting input to the Phase 2 Current Sense Amplifier. 22 VID_SEL Ground Selects VR10.X VID, Float Selects OPTERON VID, VCC Selects ATHLON VID 23 VCCL3 Power for Phase 3 Low-Side Gate Driver. 24 GATEL3 Phase 3 Low-Side Gate Driver Output and input to GATEH3 non-overlap comparator. 25 PGND3 Return for Phase 3 Gate Drivers 26 GATEH3 Phase 3 High-Side Gate Driver Output and input to GATEL3 non-overlap comparator. 27 VCCH3 Power for Phase 3 High-Side Gate Driver 28 VCCH2 Power for Phase 2 High-Side Gate Driver 29 GATEH2 Phase 2 High-Side Gate Driver Output and input to GATEL2 non-overlap comparator. 30 PGND2 Return for Phase 2 Gate Drivers 31 GATEL2 Phase 2 Low-Side Gate Driver Output and input to GATEH2 non-overlap comparator. 32 5VUVL Can be used to monitor the driver supply voltage or 5V supply voltage when converting from 5V. An under voltage condition initiates Soft Start. 33 VCCL1_2 Power for Phase 1 and 2 Low-Side Gate Drivers. 34 GATEL1 Phase 1 Low-Side Gate Driver Output and input to GATEH1 non-overlap comparator. 35 PGND1 Return for Phase 1 Gate Drivers 36 GATEH1 Phase 1 High-Side Gate Driver Output and input to GATEL1 non-overlap comparator. 37 VCCH1 Power for Phase 1 High-Side Gate Driver 38 NC Not connected 39 CSINM1 Inverting input to the Phase 1Current Sense Amplifier. 40 CSINP1 Non-inverting input to the Current Sense Amplifier. 41 OVP Output that drives high during an Over-Voltage condition. 42 ENABLE Enable Input. A logic low applied to this pin puts the IC into Fault mode. 43 OVPSNS Dedicated output voltage sense pin for Over Voltage Protection. 44 5VREF Compensation for internal voltage reference rail. 45 VID5 Inputs to VID D to A Converter 46 VID0 Inputs to VID D to A Converter 47 VID1 Inputs to VID D to A Converter 48 VID2 Inputs to VID D to A Converter |
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Similar Description - IR3093MTR |
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