ADP3290JCPZ-RL ON Semiconductor, ADP3290JCPZ-RL Datasheet
ADP3290JCPZ-RL
Specifications of ADP3290JCPZ-RL
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ADP3290JCPZ-RL Summary of contents
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... SS 6 DELAY 7 TRDET 8 VRHOT 9 TTSNS 10 ORDERING INFORMATION Device Package ADP3290JCPZ−RL LFCSP40 (Pb−Free) †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. 1 MARKING DIAGRAM ADP3290 #_YYYYYY ZZZZZZZZ CCCCC ...
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VCC RT RAMP SHUNT REGULATOR OSCILLATOR UVLO SHUTDOWN + GND 18 CMP – – 800mV DAC – 150mV CMP – + CSREF + – DAC – 350mV DELAY PWRGD 2 CROWBAR TTSNS ...
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IPD09N03LA IPD09N03LA 1. For a Description of Optional R Resistors, SW See the Theory of Operation Section. 2. Connect Near Each Inductor. Figure 2. Application Schematic − 4−Phase Operation IPD09N03LA IPD09N03LA IPD09N03LA IPD09N03LA IRFE VID0 OD VID1 GND VID2 CSCOMP ...
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ABSOLUTE MAXIMUM RATINGS Parameter Supply Voltage FBRTN PWM3 to PWM4, Rampadj SW1 to SW4 SW1 to SW4 <200 ns All other Inputs and Outputs Storage Temperature Range Operating Ambient Temperature Range Operating Junction Temperature Thermal Impedance Lead Temperature Soldering (10 ...
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PIN ASSIGNMENT Pin No. Mnemonic 1 EN Power Supply Enable Input. Pulling this pin to GND disables the PWM outputs and pulls the PWRGD output low. 2 PWRGD Power−Good Output. Open−drain output that signals when the output voltage is outside ...
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ELECTRICAL CHARACTERISTICS Parameter Reference Current Reference Bias Voltage Reference Bias Current Error Amplifier Output Voltage Range (Note 2) Accuracy Load Line Positioning Accuracy V Differential Non−linearity Input Bias Current FBRTN Current Output Current Gain Bandwidth Product GBW Slew Rate LLINE ...
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ELECTRICAL CHARACTERISTICS Parameter Current Sense Amplifier Offset Voltage Input Bias Current I Gain Bandwidth Product Slew Rate Input Common−Mode Range Output Voltage Range Output Current Current Limit Latchoff Delay Time Current Balance Amplifier Common−Mode Range (Note 3) Input Resistance Input ...
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ELECTRICAL CHARACTERISTICS Parameter Thermal Throttling Control cont. TTSNS VRHOT Threshold Voltage TTSNS Hysteresis VRHOT Output Low Voltage Power−Good Comparator Undervoltage Threshold V Overvoltage Threshold V Output Low Voltage V Power−Good Delay Time During Soft−Start VID Code Changing VID Code Static ...
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Theory of Operation The ADP3290 combines a multi−mode, fixed frequency PWM control with multiphase logic outputs for use in 2−, 3−, or 4−phase synchronous buck CPU core supply power converters. The internal VID DAC is designed to interface with Intel ...
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... divide NOTE: Single−Phase operation is also possible; contact ON Semiconductor for more details. Output Voltage Differential Sensing The ADP3290 combines differential sensing with a high accuracy VID DAC and reference, and a low offset error amplifier. This maintains a worst−case specification of ±7.0 mV differential sensing error over its full operating output voltage and with tighter accuracy over a 0 temperature range ...
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Voltage Control Mode A high gain, bandwidth voltage mode error amplifier is used for the voltage mode control loop. The control input voltage to the positive input is set via the VID logic according to the voltages listed. This voltage ...
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Current Limit, Short−Circuit, and Latchoff Protection The ADP3290 compares a programmable current limit set point to the voltage from the output of the current sense amplifier. The level of current limit is set with the resistor from the I pin ...
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The ADP3290 also adds the use of the SS pin to limit DVID slew−rates. These can be encountered when the system does a large single VID step for power state changes, thus the DVID slew−rate needs to be limited to ...
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UVLO less than their respective thresholds, the ADP3290 is disabled. This holds the PWM outputs at ground, shorts the DELAY capacitor to ground, and the forces PWRGD and OD signals low. In the application circuit, the OD ...
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VR11.1 VID Codes OUTPUT(V) VID7 1.40625 0 1.40000 0 1.39375 0 1.38750 0 1.38125 0 1.37500 0 1.36875 0 1.36250 0 1.35625 0 1.35000 0 1.34375 0 1.33750 0 1.33125 0 1.32500 0 1.31875 0 1.31250 0 1.30625 0 1.30000 ...
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VR11.1 VID Codes OUTPUT(V) VID7 1.09375 0 1.08750 0 1.08125 0 1.07500 0 1.06875 0 1.06250 0 1.05625 0 1.05000 0 1.04375 0 1.03750 0 1.03125 0 1.02500 0 1.01875 0 1.01250 0 1.00625 0 1.00000 0 0.99375 0 0.98750 ...
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VR11.1 VID Codes OUTPUT(V) VID7 0.78125 1 0.77500 1 0.76875 1 0.76250 1 0.75625 1 0.75000 1 0.74375 1 0.73750 1 0.73125 1 0.72500 1 0.71875 1 0.71250 1 0.70625 1 0.70000 1 0.69375 1 0.68750 1 0.68125 1 0.67500 ...
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Application Information The design parameters for a typical Intel VRD 11.1 compliant CPU application are as follows: • Input voltage ( • VID setting voltage ( 1.400 V VID • Duty cycle (D) ...
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The smallest possible inductor should be used to minimize the number of output capacitors. For this example, choosing a 220 nH inductor is a good starting point and gives a calculated ripple current of 12.5 A. The inductor should not ...
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PLACE AS CLOSE AS POSSIBLE TO NEAREST INDUCTOR R OR LOW−SIDE MOSFET TH R PH1 ADP3290 R R CSCOMP CS1 CS2 CS1 CS2 CSSUM 16 CSREF 15 Figure 10. Temperature Compensation Circuit Values The following procedure and ...
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Here the current limit current, which is the LIM maximum signal level that the CSA responds to best to select the resistor values to minimize their values to reduce the noise and parasitic susceptibility of the ...
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X(MIN 220 X(MIN 1 220 nH 1 X(MAX) 2 ...
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MOSFET to turn on and off, and to the current and voltage that are being switched. Basing the switching speed on the rise and fall time of the gate driver impedance and MOSFET ...
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Current Limit Setpoint To select the current limit setpoint, first find the resistor value for R . The current limit threshold for the ADP3290 LIM is set with a constant current source (I flowing out of the I pin, which ...
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0.862 VID ...
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Thermal Monitor Design The thermistor is used on the TTSENSE input of the ADP3290 for monitoring the temperature of the VR. A constant current of 123 mA is sourced out of this pin and runs through a thermistor network such ...
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DC Load Line Setting 3. Measure the output voltage at no load (V Verify that it is within tolerance. 4. Measure the output voltage at full load cold (V ). Let the board sit for ~10 minutes at FLCOLD full ...
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If both overshoots are larger than desired, try making the adjustments using the following suggestions: • Make the ramp resistor larger by 25% (R • For V , increase C or increase the switching TRAN1 B frequency • For ...
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Make a mirror image of any pad being used to heatsink the MOSFETs on the opposite side of the PCB to achieve the best thermal dissipation in the air around the board. To further improve thermal performance, ...
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... A B NOTE 3 0.05 C *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81− ...