MAX17008GTI+ Maxim Integrated Products, MAX17008GTI+ Datasheet
MAX17008GTI+
Specifications of MAX17008GTI+
Related parts for MAX17008GTI+
MAX17008GTI+ Summary of contents
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... Maximum Input Voltage Rating o Independent Enable Inputs o Independent Power-Good Outputs o Overvoltage Protection (MAX17007A/MAX17007B Only) o Undervoltage/Thermal Protection o Voltage Soft-Start and Soft-Shutdown PART MAX17007AGTI+ MAX17007BGTI+ MAX17008GTI+ + Denotes a lead(Pb)-free/RoHS-compliant package Exposed pad. TOP VIEW Applications Features Ordering Information TEMP RANGE PIN-PACKAGE -40°C to +105°C 28 TQFN-EP* -40° ...
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... REFIN1 Dual Mode™ Switchover Threshold I REFIN1 REFIN1, FB2 Bias Current V SMPS1 Voltage Accuracy V V Dual Mode is a trademark of Maxim Integrated Products, Inc. 2 _______________________________________________________________________________________ DL1 to GND ................................................-0. DL2 to PGND..............................................-0. PGND to GND ......................................................-0. 0.3V REF Short Circuit to GND ...........................................Continuous Continuous Power Dissipation (T 28-Pin TQFN T2844-1 (derate 20.8mW/° ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers ELECTRICAL CHARACTERISTICS (continued 12V 5V EN1 EN2 +25°C.) A PARAMETER SYMBOL SMPS2 Voltage ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers ELECTRICAL CHARACTERISTICS (continued 12V 5V EN1 EN2 +25°C.) A PARAMETER SYMBOL CURRENT LIMIT ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers ELECTRICAL CHARACTERISTICS (continued 12V 5V EN1 EN2 +25°C.) A PARAMETER SYMBOL DL_ Transition ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers ELECTRICAL CHARACTERISTICS (continued 12V 5V EN1 EN2 PARAMETER SYMBOL REFIN1 Dual-Mode Switchover Threshold SMPS1 Voltage Accuracy ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers ELECTRICAL CHARACTERISTICS (continued 12V 5V EN1 EN2 PARAMETER SYMBOL GATE DRIVERS DH1, DH2 Gate-Driver R On-Resistance ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers = 5V, SKIP = GND, T (Circuit of Figure 12V SMPS2 1.5V EFFICIENCY vs. LOAD CURRENT 100 20V 70 12V 60 ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers = 5V, SKIP = GND, T (Circuit of Figure 12V SMPS2 MAXIMUM OUTPUT CURRENT vs. TEMPERATURE 12V IN ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers = 5V, SKIP = GND, T (Circuit of Figure 12V SMPS1 STARTUP WAVEFORM (HEAVY LOAD) MAX17007A toc19 ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers = 5V, SKIP = GND, T (Circuit of Figure 12V DYNAMIC OUTPUT VOLTAGE TRANSITION (PWM MODE) MAX17007A toc26 OUT1 1.2V A ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers PIN NAME Pulse-Skipping Control Input. This four-level input determines the mode of operation under normal steady-state conditions and dynamic output-voltage transitions Open (3.3V) = Ultrasonic mode (without forced-PWM ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers PIN NAME Inductor Connection for SMPS1. Connect LX1 to the switched side of the inductor. LX1 serves as the 14 LX1 lower supply rail for the DH1 high-side gate driver. ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers C VCC 1µF 16 AGND 2 ILIM1 CURRENT REF ILIM2 LIMIT V 60mV CC OPEN 45mV REF 30mV 3 REF GND 15mV 5 4-LEVEL SKIP PIN REF ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers Table 1. Component Selection for Standard Applications COMPONENT V IN TON1 = 220k Input Capacitor (2x) 10µF, 25V (per Phase) Taiyo Yuden TMK432BJ106KM (2x) 330µF, 2.5V, 12m , C case ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers C VCC 1µF 16 AGND ILIM CURRENT C 2 CCI REF PIN LIMIT (pF) V 60mV 120 CC OPEN 45mV 180 REF 30mV 220 C GND 15mV 470 CCI 220pF ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers TON2 TON1 SKIP ILIM1 CSH1 CSL1 G m BST1 DH1 LX1 V DD DL1 GND CSL1 EN1 REFIN1 V CC REF 2.0V REF PGOOD1 Figure 3. MAX17007A/MAX17007B/MAX17008 Functional Diagram ______________________________________________________________________________________ ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers +5V Bias Supply (V The MAX17007A/MAX17007B/MAX17008 require an external 5V bias supply in addition to the battery. Typically, this 5V bias supply is the notebook’s 95%- efficient 5V system supply. ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers SMPS Detailed Description Free-Running Constant-On-Time PWM Controller with Input Feed-Forward The Quick-PWM control architecture is a pseudo-fixed- frequency, constant-on-time, current-mode regulator with voltage feed-forward. This architecture relies on the output ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers Switching Frequency The MAX17007A/MAX17007B/MAX17008 feature inde- pendent resistor-programmable switching frequencies for each SMPS, providing flexibility for applications where one SMPS operates at a lower switching fre- quency when connected to ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers Soft-start begins when EN is driven high and REF is in regulation. During soft-start, the output is ramped up from 0V to the final set voltage at 1.3mV/µs slew rate ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers When SKIP is pulled to GND, the MAX17007A/MAX17007B/ MAX17008 remain in pulse-skipping mode. Since the out- put is not able to sink current, the timing for negative dynamic output-voltage transitions ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers Valley Current-Limit Protection The current-limit circuit employs a unique “valley” cur- rent-sensing algorithm that senses the inductor current across the output current-sense element—inductor DCR or current-sense resistor, which generates a ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers The MAX17007A/MAX17007B/MAX17008 feature pre- set and adjustable output voltages for both SMPSs, and dynamic output voltages for SMPS1. In combined mode, the output voltage is set by REFIN1, and all ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers rate. Additional load current can slow down the output voltage change during a positive REFIN1 voltage change, and can speed up the output voltage change during a negative REFIN1 voltage ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers An integrator amplifier forces the DC average of the FB voltage to equal the target voltage. This internal amplifier integrates the feedback voltage and provides a fine adjustment to the ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers Undervoltage Protection (UVP) When the feedback voltage drops below the undervolt- age threshold, the controller immediately pulls PGOOD low and triggers a 200µs one-shot timer. If the feed- back voltage ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers Quick-PWM Design Procedure Firmly establish the input voltage range and maximum load current before choosing a switching frequency and inductor operating point (ripple-current ratio). The primary design trade-off lies in ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers Setting the Valley Current Limit The minimum current-limit threshold must be high enough to support the maximum load current when the current limit is at the minimum tolerance value. The ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers DH_ LX_ MAX17007A DL_ MAX17007B MAX17008 PGND CSH_ CSL_ b) LOSSLESS INDUCTOR SENSING Figure 14. Current-Sense Configurations (Sheet Output Capacitor Selection The output filter capacitor must have ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers When only using ceramic output capacitors, output overshoot (V ) typically determines the minimum SOAR output capacitance requirement. Their relatively low capacitance value can allow significant output over- shoot when ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers Calculating the power dissipation in high-side MOSFET (N ) due to switching losses is difficult since it must H allow for difficult quantifying factors that influence the turn-on and turn-off ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers In a single-phase configuration, the absolute point of dropout is when the inductor current ramps down dur- ing the minimum off-time (∆ much as it ramps DOWN ). ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers 3) Group the gate-drive components (BST capacitors, V bypass capacitor) together near the controller IC Make the DC-DC controller ground connections as shown in Figures 1 and 2. ...
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Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers Chip Information PROCESS: BiCMOS ______________________________________________________________________________________ Package Information For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code ...
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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. 36 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...