MAX1544ETL+ Maxim Integrated Products, MAX1544ETL+ Datasheet
MAX1544ETL+
Specifications of MAX1544ETL+
Related parts for MAX1544ETL+
MAX1544ETL+ Summary of contents
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... AMD Hammer Desktop or Notebook PCs Multiphase CPU Core Supply Voltage-Positioned Step-Down Converters Servers/Desktop Computers Quick-PWM is a trademark of Maxim Integrated Products, Inc. Hammer is a trademark of AMD. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies ABSOLUTE MAXIMUM RATINGS V+ to GND ..............................................................-0.3V to +30V V to GND ..............................................................-0. PGND............................................................-0.3V to +6V DD SKIP, SUS, D0–D4 to GND.......................................-0.3V to +6V ILIM, ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 15V 1.3V, OFS = SUS = GNDS = D0–D4 = GND; T PARAMETER SYMBOL On-Time (Note ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 15V 1.3V, OFS = SUS = GNDS = D0–D4 = GND; T PARAMETER SYMBOL Output Undervoltage ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 15V 1.3V, OFS = SUS = GNDS = D0–D4 = GND; T PARAMETER SYMBOL Current-Balance G ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 15V 1.3V, OFS = SUS = GNDS = D0–D4 = GND; T PARAMETER SYMBOL D0–D4 Logic ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 15V 1.3V, OFS = SUS = GNDS = D0–D4 = GND; T PARAMETER SYMBOL BIAS AND ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 15V 1.3V, OFS = SUS = GNDS = D0–D4 = GND; T PARAMETER SYMBOL DL_ Gate-Driver ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies (Circuit of Figure 12V (SUS = V ), OFS = GND +25°C, unless otherwise specified OUTPUT VOLTAGE vs. LOAD CURRENT ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies (Circuit of Figure 12V (SUS = V ), OFS = GND +25°C, unless otherwise specified NO-LOAD SUPPLY CURRENT ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies (Circuit of Figure 12V (SUS = V ), OFS = GND +25°C, unless otherwise specified POWER-UP SEQUENCE ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies (Circuit of Figure 12V (SUS = V ), OFS = GND +25°C, unless otherwise specified 1.00V LOAD TRANSIENT ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies (Circuit of Figure 12V (SUS = V ), OFS = GND +25°C, unless otherwise specified SINGLE-PHASE SKIP TO DUAL-PHASE PWM ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies PIN NAME Slew-Rate Adjustment Pin. Connect a resistor from TIME to GND to set the internal slew-rate clock TIME 150kΩ to 15kΩ resistor sets the clock from 100kHz ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies PIN NAME Current Balance Compensation. Connect a 470pF capacitor between CCI and FB. See the Current 14 CCI Balance Compensation section. Feedback Input internally connected to both the ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies PIN NAME S econd ar y Low - ate ver O utp ut ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies Table 1. Component Selection for Standard Multiphase Applications DESIGNATION Input Voltage Range VID Output Voltage (D4–D0) Suspend Voltage (SUS, S0–S1) Maximum Load Current Number of Phases (η ) TOTAL Inductor ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies R13 10Ω R12 100kΩ C2 1µF POWER GOOD DAC INPUTS SUSPEND INPUTS (FOUR-LEVEL LOGIC) ON OFF R TIME 64.9kΩ C CCV 47pF REF (300kHz) C REF 0.22µ 100kΩ ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies SHDN VID (D0–D4) SOFT-START 1 LSB PER R CYCLE TIME V CORE VROK Figure 2. Power-Up and Shutdown Sequence Timing Diagram Table 2. Component Suppliers MANUFACTURER BI Technologies Central Semiconductor ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies Table 3. Operating Mode Truth Table SHDN SKIP SUS GND GND GND REF V GND x CC REF V or ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies SUS 2.5V 1.0V Figure 3. Internal Multiplexers Functional Diagram When the processor enters low-power suspend mode, it sets the regulator to a lower ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies SUS V DAC CLKS SLEW BLANK TIME CLOCK VROK VROK BLANKING Figure 4. Suspend Transition as the surge current is less than the current limit set ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies Table 4. Output Voltage VID DAC Codes (SUS = GND ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies CSN CSP ILIM 19R R CMP CMN V CC REF REF (2.0V) SHDN GND CCV Gm REF 1. OFS FB OAIN+ Gm ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies Table 5. Suspend Mode DAC Codes LOWER SUSPEND CODES SUS High GND GND High GND REF High GND OPEN High GND V CC High REF GND High REF ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies The one-shot for the secondary phase varies the on-time in response to the input voltage and the difference between the main and secondary inductor currents. Two identical transconductance amplifiers integrate ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies The multiphase Quick-PWM controller integrates the difference between the current-sense voltages and adjusts the on-time of the secondary phase to maintain current balance. The current balance now relies on the ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies The multiphase Quick-PWM controllers include a third amplifier used to add small offsets to the voltage-posi- tioned load line. The offset amplifier is summed directly with the feedback voltage, making ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies SKIP is a three-level logic input—GND, REF, or high. This input is intended to be driven by a dedicated open-drain output with the pullup resistor connected either to REF (or ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies Since only the valley current is actively limited, the actual peak current is greater than the current-limit threshold by an amount equal to the inductor ripple current. Therefore, the exact ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies Power-on reset (POR) occurs when V approximately 2V, resetting the fault latch, activating boot mode, and preparing the PWM for operation. V undervoltage lockout (UVLO) circuitry inhibits switch- ing, and ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies Transient Response The inductor ripple current impacts transient-response performance, especially at low V IN Low inductor values allow the inductor current to slew faster, replenishing charge removed from the output ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies Output Capacitor Stability Considerations For Quick-PWM controllers, stability is determined by the value of the ESR zero relative to the switching fre- quency. The boundary of instability is given by ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies 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-cur- rent applications usually require less ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies medium-sized MOSFETs. However, high-current appli- cations driving large, high-side, MOSFETs require boost capacitors larger than 0.1µF. For these applica- tions, select the boost capacitors to avoid discharging the capacitor more ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies MAX1544 ERROR COMPARATOR Figure 10. Voltage-Positioning Gain slew the inductor current higher in response to increased load, and must always be greater than approaches 1, the absolute ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies Applications Information PC Board Layout Guidelines Careful PC board layout is critical to achieve low switching losses and clean, stable operation. The switching power stage requires particular attention (Figure 11). ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies KELVIN SENSE VIAS UNDER THE SENSE RESISTOR (REFER TO EVALUATION KIT) MAIN PHASE INDUCTOR PLACE CONTROLLER ON BACK SIDE WHEN POSSIBLE, USING THE GROUND PLANE TO SHIELD THE IC FROM ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies R10 10Ω R11 100kΩ C2 1µF POWER GOOD DAC INPUTS SUSPEND INPUTS (FOUR-LEVEL LOGIC) ON OFF R 64.9kΩ REF (300kHz) C REF 0.22µ 100kΩ 22.6kΩ ±1% ±1% REF ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies R12 10Ω C6 0.22µF D1 1N4148 OUTPUT R C COMP1 COMP1 20kΩ 270pF R17 200kΩ REF (MASTER) C9 R18 100pF 49.9kΩ FLOAT (300kHz) CONNECT TO MAX1544 (SEE FIGURE 12a) POWER ...
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Dual-Phase, Quick-PWM Controller for AMD Hammer CPU Core Power Supplies C11 0.22µF D2 1N4148 OUTPUT R C COMP2 COMP2 20kΩ 270pF R24 200kΩ REF (MASTER) C14 100pF FLOAT (300kHz) CONNECT TO MAX1544 (SEE FIGURE 12a) POWER GROUND ANALOG GROUND (MASTER) ...
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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. 42 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2003 Maxim Integrated Products ...