MAX17528GTJ+ Maxim Integrated Products, MAX17528GTJ+ Datasheet
MAX17528GTJ+
Specifications of MAX17528GTJ+
Related parts for MAX17528GTJ+
MAX17528GTJ+ Summary of contents
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... Temperature Comparator o Drives Large Synchronous Rectifier FETs 26V Battery Input Range o Adjustable Switching Frequency (600kHz max) o Undervoltage and Thermal-Fault Protection o Soft-Startup and Soft-Shutdown o Internal Boost Diode PART MAX17528GTJ+ + Denotes a lead(Pb)-free/RoHS-compliant package Exposed pad. Applications TOP VIEW PGDIN VRHOT TIME ILIM ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers ABSOLUTE MAXIMUM RATINGS GND .....................................................-0. D0–D6 to GND..........................................................-0.3V to +6V CSP, CSN to GND ....................................................-0.3V to +6V ILIM, THRM, PGDIN, VRHOT, PWRGD to GND .......-0.3V to +6V ...
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ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V GNDS = PGND = GND CSP specified. Typical values are +25°C.) (Note 2) A PARAMETER SYMBOL ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V GNDS = PGND = GND CSP specified. Typical values are +25°C.) ...
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ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V GNDS = PGND = GND CSP specified. Typical values are +25°C.) (Note 2) A PARAMETER SYMBOL ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers ELECTRICAL CHARACTERISTICS (Circuit of Figure 12V GNDS = PGND = GND CSP wise specified.) (Note 2) PARAMETER SYMBOL PWM CONTROLLER Input-Voltage ...
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ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V GNDS = PGND = GND CSP wise specified.) (Note 2) PARAMETER SYMBOL PWRGD Startup Delay PWRGD and CLKEN (IMVP-6.5, ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V GNDS = PGND = GND CSP wise specified.) (Note 2) PARAMETER SYMBOL GATE DRIVERS ...
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Circuit of Figure 1.) A 0.9V OUTPUT EFFICIENCY vs. LOAD CURRENT 100 12V 20V 60 SKIP MODE PWM MODE 50 0.01 0 100 LOAD CURRENT (A) 0.65V OUTPUT ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers (T = +25°C, unless otherwise noted. Circuit of Figure 1 0.65V NO-LOAD OUT SUPPLY CURRENT vs. INPUT VOLTAGE 100 0 INPUT VOLTAGE ...
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Circuit of Figure 1.) A IMVP-6.5 SOFT-START WAVEFORM (UP TO CLKEN) MAX17528 toc16 200µs/div A. SHDN, 5V/div 500mV/div OUT B. CLKEN, 5V/div D. INDUCTOR ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers (T = +25°C, unless otherwise noted. Circuit of Figure 1.) A LOAD-TRANSIENT RESPONSE (IMVP-6.5 LFM MODE) MAX17528 toc22 9.5A 3.5A 0.8375V 0.825V 9.5A 3.5A 20µs/div 3.5A TO 9.5A, C. INDUCTOR CURRENT, OUT ...
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Circuit of Figure 1.) A OUTPUT OVERLOAD WAVEFORM 100µs/div 500mV/div OUT B. PGOOD, 5V/div ______________________________________________________________________________________ 1-Phase Quick-PWM Intel IMVP-6.5/GMCH Controllers Typical Operating Characteristics (continued) ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers PIN NAME Current Monitor Output. The MAX17528 IMON output sources a current that is directly proportional to the current-sense voltage as defined by: where G m(IMON) The IMON current is unidirectional (sources current out of ...
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Intel IMVP-6.5/GMCH Controllers PIN NAME Pulse-Skipping Control Input. This 1.0V logic input signal indicates power usage and sets the operating mode of the MAX17528. When SKIP is forced high, the controller is immediately set to automatic pulse-skipping mode. The controller ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers PIN NAME Dual-Function GMCH/IMVP-6.5 Select Input and Active-Low IMVP-6.5 CPU Clock Enable Open- Drain Output. Connect to system 3.3V supply through pullup resistors for proper IMVP-6.5 operation. CLKEN voltage has to be higher than 2.3V ...
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Intel IMVP-6.5/GMCH Controllers PIN NAME Active-Low Open-Drain Output of Internal Comparator. VRHOT is pulled low when the voltage at VRHOT 28 THRM goes below 1.5V (30 Slew-Rate Adjustment Pin. the internal error-amplifier target. The sum of the resistance ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers ON OFF (VRON) AGND SYSTEM I/O POWER-GOOD VALLEY CURRENT LIMIT SET BY TIME TO ILIM V = 0.2V x R2/(R2 + R3) LIMIT SLEW RATE SET BY TIME ...
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Table 1. IMVP-6.5 Component Selection DESIGN AUBURNDALE PARAMETERS IMVP-6.5 ULV Circuit Figure 1 Input-Voltage Range 7V to 20V Maximum Load Current 20A (TDC Current) (15A) 14A Transient Load Current (10A/µs) Load Line 3mV/A POC Setting 20A COMPONENTS 200k TON Resistance ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers ON OFF (VRON) VID INPUTS VALLEY CURRENT LIMIT SET BY TIME TO ILIM V = 0.2V x R2/(R2 + R3) LIMIT SLEW RATE SET BY TIME BIAS CURRENT dV/dt = 12.5mV/µs x 71.5kΩ/(R2 + R3) ...
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Detailed Description Free-Running, Constant On-Time Controllers with Input Feed-Forward The Quick-PWM control architecture is a pseudo-fixed- frequency, constant-on-time, current-mode regulator with voltage feed-forward (Figure 3). This architecture relies on the output filter capacitor’s ESR and the load regulation to provide ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers CSP 10x CSN ILIM TIME V CC REF (2.0V) GND D0–D6 CURRENT DAC PGDIN SCALING SHDN FAULT REF 500kΩ CCV G m(CCV) 160µS REF FB CSP G m(FB) CSN 600µS GNDS G m(GNDS) Figure 3. ...
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On-times translate only roughly to switching frequen- cies. The on-times guaranteed in the Electrical Characteristics table are influenced by switching delays in the external high-side MOSFET. Resistive losses, including the inductor, both MOSFETs, and printed-circuit board (PCB) copper losses in ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers MAX17528 PGND CSP CSN A) OUTPUT SERIES RESISTOR SENSING MAX17528 PGND CSP CSN B) LOSSLESS INDUCTOR SENSING Figure 4. Current-Sense Methods ...
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The nominal no-load output voltage (V defined by the VID-selected DAC voltage (see Table 2) plus the remote ground-sense adjustment (V defined in the following equation TARGET FB DAC where V is the selected VID ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers Table 2. IMVP-6.5 Output Voltage VID DAC Codes ...
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Table 2. IMVP-6.5 Output Voltage VID DAC Codes (continued ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers The MAX17528 automatically controls the current to the minimum level required to complete the transition in the calculated time. The slew-rate controller uses an inter- nal capacitor and current-source programmed transition the ...
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GMCH Sleep Transition For GMCH applications (CLKEN = GND), the system enters the sleep state by stepping the VID code down to the deeper sleep VID code. During these VID transitions, the MAX17528 blanks PWRGD (forced high impedance) until 20µs ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers Forced-PWM Operation (Normal Mode) During soft-shutdown and normal operation—when the CPU is actively running (SKIP = low, Table 3), the MAX17528 operates with the low-noise, forced-PWM control scheme. Forced-PWM operation disables the zero-crossing comparator, forcing ...
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Automatic Pulse-Skipping Switchover In skip mode (SKIP = high), an inherent automatic switchover to PFM takes place at light loads (Figure 8). This switchover is affected by a comparator that truncates the low-side switch on-time at the inductor current’s zero ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers If the V voltage drops below 4.25V, the controller CC assumes that there is not enough supply voltage to make valid decisions. To protect the output from overvoltage V CC SHDN VID (D0–D6) INVALID VID ...
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Table 3. Operating Mode Truth Table SKIP GND X X DISABLED Pulse skipping Rising X X 1/8 R TIME rate Forced-PWM High X Low nominal R slew rate Pulse-skipping High High High nominal R slew rate Pulse-skipping High Low High ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers The current monitor allows the processor to accurately monitor the CPU load and quickly calculate the power dissipation to determine if the system is about to over- heat before the significantly slower temperature sensor signals ...
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The internal pulldown transistor that drives DL low is robust, with a 0.25Ω (typ) on-resistance. This helps pre- vent DL from being pulled up due to capacitive coupling from the drain to the gate of the low-side MOSFETs when the ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers • Switching frequency: This choice determines the basic trade-off between size and efficiency. The optimal frequency is largely a function of maximum input voltage due to MOSFET switching losses that are proportional to frequency and ...
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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 val- ley of the inductor current occurs at I half the ripple current; therefore: ⎛ ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers R is the parasitic board resistance between the out- PCB put capacitors and sense resistors. For a standard 300kHz application, the ESR zero fre- quency must be well below 95kHz, preferably below 50kHz. Tantalum, SANYO ...
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MOSFET Power Dissipation Worst-case conduction losses occur at the duty factor extremes. For the high-side MOSFET (N case power dissipation due to resistance occurs at the minimum input voltage: ⎛ ⎞ OUT = sistive ...
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Quick-PWM Intel IMVP-6.5/GMCH Controllers Applications Information PCB Layout Guidelines Careful PCB layout is critical to achieve low switching losses and clean, stable operation. The switching power stage requires particular attention. If possible, mount all the power components on the ...
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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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 41 © 2009 Maxim Integrated Products 1-Phase Quick-PWM Intel IMVP-6 ...