EVALUATION KIT AVAILABLE MAX15569 2-Phase/1-Phase QuickTune-PWM Controller 2 with Serial I C Interface General Description Benefits and Features The MAX15569 step-down controller consists of one Multiphase Controller Maximizes Processor multiphase regulator. The multiphase CPU regulator uses Performance Maxims unique 2-phase QuickTune-PWM constant on- 2-Phase QuickTune-PWM CPU Core Regulator time architecture. The 2-phase CPU regulator runs 180 Output-Voltage Control out-of-phase for true interleaved operation, minimizing Active Load-Line Amplifier with Adjustable Gain input capacitance. 5mV FB Accuracy Over Line and Load Programmable Slew Rate and Soft-Start The devices VR is controlled by writing appropriate data into a function-mapped register file. Output volt- Accurate Current Balance and Current Limit 2 ages are dynamically changed through a 2-wire, fast I C True Differential Remote Output Sense interface (clock, data), allowing the switching regula- 8-Bit ADC Digitizes Current Sense to Store in tor to be programmed to different voltages. A slew- Current Monitor Register rate controller allows controlled voltage transition and Transient Phase Overlap Reduces Output controlled soft-start. The regulator runs in a unique Capacitance smart, low-power pulse-skipping-state algorithm for Programmable Functionality Allows Optimized Design best efficiency over the full load range and the best Performance transient response with respect to common pulse- Programmable 300kHz to 1400kHz Switching Frequency skipping methods. Programmable Soft-Shutdown (2k Discharge The device includes multiple fault-protection features: Switch) Output overvoltage protection (OVP), undervoltage pro- 2 I C Serial-Interface Control tection (UVP), and thermal protection. When any of these Robu st Protection for Relia ble Operation fault-protection features detect a fault condition, the con- Overcurrent, Output-Voltage Overrange, troller shuts down. A multifunction INT output monitors Overvoltage, Undervoltage, and Thermal-Fault output voltage, overcurrent (OC), overrange (VOUTMAX), Protection and thermal faults (VRHOT). System Status Register The controller has a programmable switching frequency, Multifunction INT Output allowing 300kHz to 1400kHz per each phase of opera- 4.5V to 24V Battery Input Range tion. The controller operates with a wide variety of drivers and MOSFETs, such as the MAX15492 MOSFET driver with standard MOSFETs, or with the power stage that integrates the drivers and MOSFETs together in a single device. Applications Ordering Information appears at end of data sheet. ARM Core Power Supply Ultrabook and Tablet Cor e Supplies Voltage-Positioned Step-Do wn Converter Multiphase DC-DC Controll ers Ultrabook is a trademark of Intel Corporation. 19-6646 Rev 1 2/15MAX15569 2-Phase/1-Phase QuickTune-PWM Controller with 2 Serial I C Interface Absolute Maximum Ratings V to AGND ........................................ -0.3V to (V + 0.3V) PGND to AGND ....................................................-0.3V to +0.3V TT BIAS BIAS to AGND .........................................................-0.3V to +6V TON to AGND ........................................................-0.3V to +26V EN, SCL, SDA to AGND ..........................................-0.3V to +6V Continuous Power Dissipation (T = +70C) A CSP1, CSN1, CSP2, CSN2 to AGND .....................-0.3V to +6V TQFN (derate 27.8mW above +70C) .............................2.2W FB, FBAC, IMON to AGND ....................-0.3V to (V + 0.3V) Operating Temperature Range ......................... -40C to +105C BIAS DRVPWM1, DRVPWM2 to PGND .........-0.3V to (V + 0.3V) Junction Temperature ......................................................+150C BIAS DRVSKP to PGND .................................-0.3V to (V + 0.3V) Storage Temperature Range ............................ -65C to +165C BIAS Lead Temperature (soldering, 10s) .................................+300C INT, THERM to AGND ............................................-0.3V to +6V Soldering Temperature (reflow) .......................................+260C IC to AGND..............................................................-0.3V to +6V GNDS to AGND ....................................................-0.3V to +0.3V Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. (Note 1) Package Thermal Characteristics TQFN Junction-to-Ambient Thermal Resistance ( ) ..........36C/W JA Junction-to-Case Thermal Resistance ( )........3C/W JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (0C to +85C) (Circuit of Figure 1. V = 10V, V = 5V, V = 1.8V, EN = BIAS, GNDS = AGND, V = V = V = V = 1V SETVOUT IN BIAS TT FBAC FB CSP CSN register 0x07h set to 0x33h . T = 0C to +85C, unless otherwise noted. Typical values are at +25C. All devices 100% tested at A +25C. Limits over temperature are guaranteed by design.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS BIAS CURRENTS BIAS Voltage Range V 4.75 5.25 V BIAS 2 I C Interface Supply (V ) V 1.6 4.0 V TT TT Skip mode, measured at BIAS, Quiescent Supply Current I V = 1.8V FB forced above the regulation 2 5 mA BIAS TT (BIAS) point, EN = BIAS Shutdown Supply Current Measured at BIAS, EN = GND, 6 A (BIAS) V = 1.8V or GND, T = +25C TT A V = high, EN = low, T = +25C 3 BIAS A V BIAS Current I A TT VTT V = high, EN = high, T = +25C 50 BIAS A PWM CONTROLLER T = +25C measured at A DC Output Voltage Accuracy FB, with respect to GNDS DAC codes from -5 +5 mV (Note 2) includes load regulation 0.50V to 1.60V error DAC codes from -8 +8 mV Measured at FB, with 0.50V to 1.40V DC Output Voltage Accuracy respect to GNDS includes (Note 2) DAC codes from load regulation error -0.7 +0.7 % 1.40V to 1.60V Line Regulation Error V = 4.75V to 5.25V, V = 5.5V to 20V 0.1 mV BIAS IN Maxim Integrated 2 www.maximintegrated.com