MAX17480GTL+ Maxim Integrated Products, MAX17480GTL+ Datasheet
MAX17480GTL+
Specifications of MAX17480GTL+
Related parts for MAX17480GTL+
MAX17480GTL+ Summary of contents
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... Power-Good (PWRGD) and Thermal-Fault (VRHOT) Outputs o System Power-OK (PGD_IN) Input o Overvoltage, Undervoltage, and Thermal-Fault Protection o Voltage Soft-Startup and Passive Shutdown o < 1µA Typical Shutdown Current PART MAX17480GTL+ + Denotes a lead(Pb)-free/RoHS-compliant package Exposed pad. VID Controller Features Accuracy over Line, Load, and OUT Ordering Information ...
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AMD 2-/3-Output Mobile Serial VID Controller ABSOLUTE MAXIMUM RATINGS (Note AGND ..............................-0.3V to +6V DD, IN3, CC DDIO PWRGD to AGND .....................................................-0.3V to +6V SHDN to AGND ........................................................-0.3V to +6V GNDS1, GNDS2, THRM, ...
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ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V FBDC_ = FBAC_ = OUT3 = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V code, T Typical values are at T ...
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... Internal MOSFET On-Resistance R LX3 Peak Current Limit I LX3 Idle-Mode Trip Level I LX3 Zero-Crossing Trip Level Maximum Duty Factor Minimum On-Time t Idle Mode is a trademark of Maxim Integrated Products, Inc. 4 _______________________________________________________________________________________ = SHDN = PGD_IN = 5V IN3 CONDITIONS GNDS1, GNDS2, detection after REFOK, latched, cleared by cycling ...
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ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V FBDC_ = FBAC_ = OUT3 = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V code, T Typical values are at T ...
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AMD 2-/3-Output Mobile Serial VID Controller ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V FBDC_ = FBAC_ = OUT3 = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V code, ...
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ELECTRICAL CHARACTERISTICS (Circuit of Figure 12V FBDC_ = FBAC_ = OUT3 = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V code, T noted. Typical values are at T ...
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AMD 2-/3-Output Mobile Serial VID Controller ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V FBDC_ = FBAC_ = OUT3 = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V code, ...
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ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V FBDC_ = FBAC_ = OUT3 = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V code, T noted. Typical values are at ...
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AMD 2-/3-Output Mobile Serial VID Controller ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V FBDC_ = FBAC_ = OUT3 = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V code, ...
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Circuit of Figure 12V CORE SMPS 1-PHASE EFFICIENCY vs. LOAD CURRENT (V = 1.2V) OUT 100 7V 90 12V 80 20V 70 SKIP MODE PWM MODE 60 0 ...
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AMD 2-/3-Output Mobile Serial VID Controller Circuit of Figure 12V MAXIMUM INDUCTOR CURRENT vs. INPUT VOLTAGE 1.2V OUT 29 27 PEAK CURRENT DC CURRENT ...
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Circuit of Figure 12V STARTUP WAVEFORMS 200µs/div V = 12V LOAD1 ...
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AMD 2-/3-Output Mobile Serial VID Controller Circuit of Figure 12V CORE SMPS 1-PHASE TRANSIENT PHASE REPEAT 1.2V 13.5A 1.5A 12V 0 2µs/div V = 12V I = 1.5A TO 13.5A ...
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Circuit of Figure 12V CORE SMPS OUTPUT OVERLOAD WAVEFORM (SEPARATE MODE 100µs/div V = 12V 40A ...
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AMD 2-/3-Output Mobile Serial VID Controller PIN NAME SMPS1 and SMPS2 Current-Limit Adjust Input. The positive current-limit threshold voltage is 0.052 times the voltage between TIME and ILIM over a 0.2V to 1.0V range of V(TIME, ILIM). The I 1 ...
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PIN NAME Output of the Voltage-Positioning Transconductance Amplifier for SMPS2. The RC network between this pin and the positive side of the remote-sensed output voltage sets the transient AC droop: R DROOP AC 15 FBAC2 where R DROOP_AC2 trade-off between ...
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AMD 2-/3-Output Mobile Serial VID Controller PIN NAME Open-Drain Power-Good Output. PWRGD is the wired-OR open-drain output of all three SMPS outputs. PWRGD is forced high impedance whenever the slew-rate controller is active (output voltage transitions). During startup, PWRGD is ...
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PIN NAME Positive Current-Sense Input for SMPS1. Connect to the positive side of the output current-sensing 33 CSP1 resistor or the filtering capacitor if the DC resistance of the output inductor is utilized for current sensing. Negative Current-Sense Input for ...
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AMD 2-/3-Output Mobile Serial VID Controller PIN NAME Oscillator Adjustment Input. Connect a resistor (R frequency (per phase): 39 OSC A 71.4k respectively, for SMPS1 and SMPS2. SMPS3 runs at twice the programmed switching frequency. Switching frequency selection is limited ...
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Table 1. Component Selection for Standard Applications 24V, IN COMPONENT 1.0V TO OUT1 OUT2 1.3V, 18A PER PHASE Separate, 2-phase mobile Mode (GNDS1 = GNDS2 = low) Switching 300kHz Frequency (2) 10µF, ...
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AMD 2-/3-Output Mobile Serial VID Controller C VCC 2.2µF R OSC R ILIM1 R ILIM2 AGND 1.5V OR 1.8V SERIAL INPUT SYSTEM POWER-GOOD ON OFF SMPS1 SMPS2 OPTION OFFSET ADDR ADDR V 0 BIT1 (VDD0) BIT2 (VDD1) CC 3.3V 0 ...
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C VCC 2.2µF R OSC R ILIM1 R ILIM2 AGND 1.5V OR 1.8V SERIAL INPUT SYSTEM POWER-GOOD ON OFF SMPS1 SMPS2 OPTION OFFSET ADDR ADDR V 0 BIT1 (VDD0) BIT2 (VDD1) CC OPEN 0 BIT2 (VDD1) BIT1 (VDD0) REF 1 ...
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AMD 2-/3-Output Mobile Serial VID Controller SHDN FAULT1 FAULT2 FAULT3 V CC REF (2.0V) AGND OFS_EN 7-BIT VID DAC1 SKIP1 ADDR PGD_IN 7-BIT VID DAC2 SKIP2 V DDIO SVC 7-BIT VID DAC3 SKIP3 SVD TIME GNDS2 GNDS1 x2 IMAX_ IMIN_ ...
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Detailed Description The MAX17480 consists of a dual fixed-frequency PWM controller with external switches that generate the sup- ply voltage for two independent CPU cores and one low-input-voltage internal switch SMPS for the separate NB SMPS. The CPU core SMPSs ...
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AMD 2-/3-Output Mobile Serial VID Controller Transient Phase Repeat When a transient occurs, the output voltage deviation depends on the controller’s ability to quickly detect the transient and slew the inductor current. A fixed-frequency controller typically responds only when a ...
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I G FBAC m FBAC where the differential current- CS CSP CSN sense voltage, and G is 2.06mS (max) as m(FBAC) defined in the Electrical Characteristics table. AC droop is ...
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AMD 2-/3-Output Mobile Serial VID Controller Nominal Output-Voltage Selection Core SMPS Output Voltage The nominal no-load output voltage (V SMPS is defined by the selected voltage reference (VID DAC) plus the remote ground-sense adjustment (V ) and the offset voltage ...
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SVC/SVD SMPS LOAD PWRGD UPPER THRESHOLD SMPS VOLTAGE (SMPS TARGET) PWRGD LOWER THRESHOLD PWRGD Figure 6. VID Transition Timing of a downward VID transition, the upper PWRGD thresh- old is enabled only after the output reaches the lower VID code ...
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AMD 2-/3-Output Mobile Serial VID Controller depending on the external MOSFETs and switching fre- quency. To maintain high efficiency under light load conditions, the processor could switch the controller to a low-power pulse-skipping control scheme. Pulse-Skipping Operation During soft-start and ...
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Table 4. Output-Voltage VID DAC Codes OUTPUT SVID[6:0] VOLTAGE SVID[6:0] (V) 000_0000 1.5500 010_0000 000_0001 1.5375 010_0001 000_0010 1.5250 010_0010 000_0011 1.5125 010_0011 000_0100 1.5000 010_0100 000_0101 1.4875 010_0101 000_0110 1.4750 010_0110 000_0111 1.4625 010_0111 000_1000 1.4500 010_1000 000_1001 1.4375 ...
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AMD 2-/3-Output Mobile Serial VID Controller DH_ LX_ DL_ MAX17480 CSP_ CSN_ A) OUTPUT SERIES RESISTOR SENSING DH_ LX_ DL_ MAX17480 CSP_ CSN_ B) LOSSLESS INDUCTOR DCR SENSING Figure 7. Current-Sense Configurations L ESL = SENSE R ...
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Combined-Mode Current Balance When the core SMPSs are configured in combined mode (GNDS1 or GNDS2 pulled to V MAX17480 current-mode architecture automatically forces the individual phases to remain current bal- anced. SMPS1 is the main voltage-control loop, and SMPS2 maintains ...
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AMD 2-/3-Output Mobile Serial VID Controller For automatic startup, the battery voltage should be present before the controller attempts to bring CC the output into regulation without the battery voltage present, the fault latch trips. The controller ...
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PSI_L SVC/SVD BUS IDLE SMPS V OUT (HIGH DAC TARGET) TARGET (LOW DAC TARGET) SMPS V OUT PGD_IN PWRGD Figure 9. PGD_IN Timing V R THRM PLACE R NEXT TO THE NTC THRM HOTTEST POWER COMPONENT. R NTC GND Figure ...
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AMD 2-/3-Output Mobile Serial VID Controller Fault Protection (Latched) Output Overvoltage Protection (OVP) The overvoltage protection (OVP) circuit is designed to protect the CPU against a shorted high-side MOSFET by drawing high current and blowing the battery fuse. The MAX17480 ...
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Adaptive dead-time circuits monitor the DL and DH dri- vers and prevent either FET from turning on until the other is fully off. The adaptive driver dead time allows operation without shoot-through with a wide range of MOSFETs, minimizing delays ...
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AMD 2-/3-Output Mobile Serial VID Controller Table 6. ILIM3 Setting PEAK CURRENT ILIM3 LIMIT (A) V 5.25 CC GND 4.25 Offset and Current-Limit Setting for NB SMPS (ILIM3) The offset and current-limit settings of the NB SMPS can be set ...
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Core SMPS Design Procedure Core Inductor Selection By design, the AMD mobile serial VID application should regard each of the MAX17480 SMPSs as inde- pendent, single-phase SMPSs. The switching frequen- cy and operating point (% ripple current or LIR) determine ...
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AMD 2-/3-Output Mobile Serial VID Controller When using low-capacity ceramic filter capacitors, capacitor size is usually determined by the capacity needed to prevent V from causing problems during SOAR load transients. Generally, once enough capacitance is added to meet the ...
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Core Power-MOSFET Selection Most of the following MOSFET guidelines focus on the challenge of obtaining high-load-current capability when using high-voltage (> 20V) AC adapters. Low- current applications usually require less attention. The high-side MOSFET (N ) must be able to ...
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AMD 2-/3-Output Mobile Serial VID Controller select the boost capacitors to avoid discharging the capacitor more than 200mV while charging the high- side MOSFETs’ gates: × GATE = C BST 200 mV where N is the number of ...
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The capacitance value required is determined primarily by the stability requirements. However, the soar and sag calculations are still provided here for reference. Low inductor values allow the inductor current to slew faster, replenishing charge removed from or added to ...
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AMD 2-/3-Output Mobile Serial VID Controller SVD SVC S START CONDITION Figure 12. SVI Bus START, STOP, and Data Change Conditions DATA OUTPUT BY MASTER DATA OUTPUT BY MAX17480 SVC FROM MASTER S START CONDITION Figure 13. SVI Bus Acknowledge ...
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A complete command consists of a START condition (S) followed by the MAX17480’s slave address and a data phase, followed by a STOP condition (P). For the slave address, bits 6:4 are always 110 and bit (don’t ...
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AMD 2-/3-Output Mobile Serial VID Controller Maximum Input Voltage The MAX17480 controller has a minimum on-time, which determines the maximum input operating voltage that maintains the selected switching frequency. With higher input voltages, each pulse delivers more energy than the ...
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Make the DC-DC controller ground connections as shown in the standard application circuit (Figure 2). This diagram can be viewed as having three sepa- rate ground planes: input/output ground, where all the high-power components go; the power ground plane, ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 48 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products ...