RT9645GQV RICHTEK [Richtek Technology Corporation], RT9645GQV Datasheet
RT9645GQV
Related parts for RT9645GQV
RT9645GQV Summary of contents
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Channels ACPI Regulator General Description The RT9645 is a combo regulator which is compliant to ACPI specification for desktop/server power management and system application. The part features one switching regulator for DDR memory VDDQ power; a second PWM controller ...
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RT9645 Typical Application Circuit V 5 GMCH V FSB_VTT 5VSB 3VSB PWM2-EN VLDT_EN V 5 GMCH V CC3 FSB_VTT 5VSB 3VSB PWM2-EN VLDT_EN S3 www.richtek.com 2 Preliminary V 5 5VSB V 12 ...
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Timing Diagram 5VSB 3VSB PVIN S5 S3 VCC5/12 5VDL V DDQ FSB_VTT 5VSB 3VSB PVIN S5 S3 VCC5/12 5VDL VDDQ_EN V DDQ VTT_EN FSB_VTT SS2/EN2 PWM2_EN (Internal) PWM2 UV Protection_EN DS9645-00 August 2007 Preliminary ~3Tss VCC12 - V POR D ...
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RT9645 Functional Pin Description Pin No. Pin Name 1 SB3V_DRV Gate Drive for 3.3VSB Linear Controller. The pin will be high in S0, S3 and S5 state. 2 VDD 3 PWM2 4 SS2/EN2 5 COMP2 6 FB2 7 BOOT 8 ...
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Function Block Diagram SS2/EN2 EN_Detect COMP2 + PWM2 - SB3V_SEN VDD 70k + - - SB3V_DRV + 35k PVIN + - - VTT_DRV + VTT_EN VDDQ UV VTT_SEN FSB-VTT UV VDD VDDQ OC SB3V Fault (UV &OC) Thermal shut_down GND ...
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RT9645 Absolute Maximum Ratings Supply Voltage, V ------------------------------------------------------------------------------------- 7V DD Supply Voltage, PVIN ----------------------------------------------------------------------------------- 16V PHASE to GND DC ------------------------------------------------------------------------------------------------------------ −0. < 200ns ----------------------------------------------------------------------------------------------------- − BOOT to GND DC ------------------------------------------------------------------------------------------------------------ −0.3V to 20V < 200ns ----------------------------------------------------------------------------------------------------- ...
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Parameter Oscillator and Soft-Start PW M Frequency Ramp Amplitude Ramp Offset Soft-Start Interval Reference Voltage Reference Voltage V REF VDDQ PWM1 Controller UGATE Source UGATE Sink LGATE Source LGATE Sink OC Current Source Under Voltage Lockout COMP1 Enable Threshold PWM2 ...
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RT9645 Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational ...
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Application Information Overview The RT9645 integrates two synchronous buck PWM controllers, two LDO controllers, and a dual power switching controller primarily designed for computer applications powered from an ATX power supply. A 300kHz Synchronous Buck PWM controller with ...
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RT9645 To prevent OC form tripping in normal operation, R must be carefully chosen with : 1. Maximum R at highest junction temperature DS(ON) 2. Minimum I from specification table OCSET + Δ > ...
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20LOG 20 20LOG (R1/R2 Modulator -20 Gain - ESR -60 10 100 1K 10K Frequency (Hz) Figure 8 Feedback Loop Design Procedure Use these ...
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RT9645 where T and T are rising and falling time of V RISE FALL upper MOSFET respectively. R DS(ON) simultaneously considered to minimize power loss of upper MOSFET. The power loss of lower MOSFET consists of conduction loss, reverse recovery ...
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Outline Dimension Symbol Richtek Technology Corporation Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 DS9645-00 August 2007 Preliminary D2 SEE ...