ADP3208CJCPZ-RL ON Semiconductor, ADP3208CJCPZ-RL Datasheet
ADP3208CJCPZ-RL
Specifications of ADP3208CJCPZ-RL
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ADP3208CJCPZ-RL Summary of contents
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ADP3208C 7-Bit, Programmable, Dual-Phase, Mobile, CPU, Synchronous Buck Controller The ADP3208C is a highly efficient, multiphase, synchronous buck switching regulator controller. With its integrated drivers, the ADP3208C is optimized for converting the notebook battery voltage into the core supply voltage ...
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COMP FB LLINE PSI PSI TTSNS VRTT PWRGD CLKEN FBRTN ABSOLUTE MAXIMUM RATINGS Parameter VCC, PVCC1, PVCC2 FBRTN, PGND1, PGND2 BST1, BST2 DC t < 200 ns BST1 to SW1, BST2 to SW2 SW1, SW2 DC t < 200 ns ...
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CODE PWRGD NC CLKEN# FB FBRTN ADP3208C COMP VARFREQ VRTT TTSNS 100 nF Figure 2. Closed−Loop Output Voltage Accuracy 5 Δ V ...
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PIN FUNCTION DESCRIPTIONS Pin No Mnemonic 1 EN Enable Input. Driving this pin low shuts down the chip, disables the driver outputs, pulls PWRGD and VRTT low, and pulls CLKEN high. 2 PWRGD Power−Good Output. Open−drain output. A low logic ...
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Pin No Mnemonic 31 PGND1 Low−Side Driver Power Ground for Phase 1. 32 DRVL1 Low−Side Gate Drive Output for Phase 1. 33 PVCC1 Power Supply Input/Output of Low−Side Gate Driver for Phase 1. 34 SW1 Current Balance Input for Phase ...
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ELECTRICAL CHARACTERISTICS = PGND2 = Low = VATFREQ = High, DPRSLP = 0 V, PSI = 1. noted (Note 1). Current entering a pin (sunk by the device) has a positive sign. R Parameter ...
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ELECTRICAL CHARACTERISTICS = PGND2 = Low = VATFREQ = High, DPRSLP = 0 V, PSI = 1. noted (Note 1). Current entering a pin (sunk by the device) has a positive sign. R Parameter ...
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ELECTRICAL CHARACTERISTICS = PGND2 = Low = VATFREQ = High, DPRSLP = 0 V, PSI = 1. noted (Note 1). Current entering a pin (sunk by the device) has a positive sign. R Parameter ...
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ELECTRICAL CHARACTERISTICS = PGND2 = Low = VATFREQ = High, DPRSLP = 0 V, PSI = 1. noted (Note 1). Current entering a pin (sunk by the device) has a positive sign. R Parameter ...
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ELECTRICAL CHARACTERISTICS = PGND2 = Low = VATFREQ = High, DPRSLP = 0 V, PSI = 1. noted (Note 1). Current entering a pin (sunk by the device) has a positive sign. R Parameter ...
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TYPICAL PERFORMANCE CHARACTERISTICS VID LOAD CURRENT (A) Figure 7. PWM Mode Efficiency vs. Load Current ...
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TYPICAL PERFORMANCE CHARACTERISTICS V VID 350 300 250 200 150 100 0.5 1.0 OUTPUT VOLTAGE (V) Figure 13. Switching Frequency vs. Output Voltage in RPM Mode 1000 VID = 1.4125 V VID = 1.1 V VID = ...
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TYPICAL PERFORMANCE CHARACTERISTICS VID SWITCH NODE 1 1 CH1 10.0V CH3 5.00A REF1 10.0V 1.00ms Figure 19. Dual−Phase, Interleaved PWM Waveform Load SWITCH NODE 2 SWITCH NODE 1 OUTPUT VOLTAGE ...
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TYPICAL PERFORMANCE CHARACTERISTICS VID OUTPUT VOLTAGE DPRSLP SWITCH NODE 1 SWITCH NODE 2 PSI = HIGH LOAD = 2 A Figure 22. DPRSLP Transition OUTPUT VOLTAGE DPRSLP SWITCH NODE 2 SWITCH NODE 1 PSI = ...
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Theory of Operation The ADP3208C combines multi−mode Pulse Width Modulated (PWM) control and Ramp Pulse Modulated (RPM) control with multi−phase logic outputs for use in single− and dual−phase synchronous buck CPU core supply power converters. The internal 7−bit VID DAC ...
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VRMP FLIP−FLOP RAMP FLIP−FLOP 400ns 30mV 1V VDC + – COMP FBRTN FB C ...
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RAMP CLOCK OSCILLATOR 0. RAMP CLOCK OSCILLATOR C R VCC A D 0.2V RAMP COMP Setting Switch Frequency Master ...
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Output Current Sensing The ADP3208C includes a dedicated Current Sense Amplifier (CSA) to monitor the total output current of the converter for proper voltage positioning vs. load current and for over current detection. Sensing the current delivered to the load ...
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VID DAC. The VID codes are listed in the VID Code table. The noninverting input voltage is offset by the droop voltage as a function of current, commonly known as active voltage positioning. The output ...
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I pin is equal to the CSREF LIM pin. The voltage across R is equal to the voltage across LIM the CSA (from CSREF pin to CSCOMP pin). This voltage is proportional to output current. ...
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If DPRSLP is pulled high, the ADP3208C operates in RPM mode. If the load condition is light, the chip enters Discontinuous Conduction Mode (DCM). Figure 33 shows a typical single−phase buck with one upper FET, one lower FET, an output ...
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V INPUT 250 19 V INPUT 200 150 100 LOAD CURRENT (A) Figure 39. Single−Phase CCM/DCM Frequency vs. Load Current Output Crowbar To prevent the CPU and other external ...
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TTSNS pin. An internal comparator circuit compares the TTSNS voltage to half the VCC threshold and outputs a logic level signal at the VRTT output ...
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Table 3. VID Code Table VID6 VID5 VID4 ...
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Table 3. VID Code Table VID6 VID5 VID4 ...
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VCC GND SP RT VID6 VID6 ILIMP VID5 ILIMN VID5 RAMP VID4 VID4 VID3 VID3 CSSUM VID2 CSREF VID2 VID1 VID1 CSCOMP LLINE VID0 VID0 PSI IREF DPRSTP RPM IMON DPRSLP http://onsemi.com 26 ...
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Application Information The design parameters for a typical IMVP−6+ compliant CPU core VR application are as follows: • Maximum input voltage ( INMAX • Minimum input voltage ( 8.0 V INMIN • Output voltage ...
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A. The inductor should not saturate at the peak current of 24.5 A, and it should be able to handle the sum of the power dissipation caused by the winding’s average current (20 A) ...
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Compute the relative values for r by using the following equations CS2 ( ...
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L is about 150 pH for the six SP capacitors, which is low X enough to avoid ringing during a load change. If the L the chosen bulk capacitor bank is too large, the number of ceramic capacitors may need ...
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The previous equation also shows the standby dissipation (I times the VCC) of the driver. CC Ramp Resistor Selection The ramp resistor ( used to set the size of the internal R PWM ramp. The value of this ...
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A Type III compensator on the voltage feedback is adequate for proper compensation of the output filter. Figure 43 shows the Type III amplifier used in the ADP3208C. Figure 44 shows the locations of the two poles and two zeros ...
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Selecting Thermal Monitor Components To monitor the temperature of a single−point hot spot, set R equal to the NTC thermistor’s resistance at the TTSET1 alarm temperature. For example, if the alarm temperature for VRTT is 100°C and a (NTHS−0603N011003J) with ...
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The resulting waveform will be similar to that shown in Figure 47. Use the horizontal cursors to measure V and V ACDRP DCDRP 47. Do not measure the undershoot or overshoot that occurs immediately after the step. V ACDRP ...
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Layout and Component Placement The following guidelines are recommended for optimal performance of a switching regulator system. General Recommendations 1. 1. For best results, use a PCB of four or more layers. This should provide the needed ...
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... ORDERING INFORMATION Device Temperature Range ADP3208CJCPZ−RL −10°C to 100°C †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. *The “Z” suffix indicates Pb−Free part. Package Package Option 48− ...
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... A B 0.05 C NOTE 3 *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− ...