EVALUATION KIT AVAILABLE MAX15303 6A Digital PoL DC-DC Converter with InTune Automatic Compensation General Description Benefits and Features The MAX15303 is a full-featured, flexible, efficient, 6A InTune Automatic Compensation Simplifies and digital point-of-load (PoL) controller with integrat- Speeds Design ed switching MOSFETs. It contains advanced power- Ensures Stability While Optimizing Transient management and telemetry features. Unlike PID-based Performance digital power regulators, the device uses Maxims State-Space Compensation Results in Fast patented InTune automatically compensated, state- Transient Response with Reduced Output space control algorithm. The InTune control law is valid for Capacitance both the small- and large-signal response and accounts Out-of-the-Box Operation Enables Fast Prototyping for duty-cycle saturation effects. These capabilities Supports Pin-Strappable Configuration: Output result in fast loop transient response and reduce the Voltage, SMBus Address, Switching Frequency, number of output capacitors compared to competing digital Current Limit controllers. Easy to Use PMBus Interface for Configuration, To help maximize system efficiency and reduce over- Control, and Monitoring all parts count, the device uses Maxims BabyBuck Flexible Sequencing and Fault Management regulator. The BabyBuck eliminates the need for an Supports Voltage Positioning external bias supply. The BabyBuck can be configured in Configurable Soft-Start and Soft-Stop Time two different modes to maximize system flexibility. 300kHz to 1000kHz Fixed-Frequency Operation The device is designed to minimize the end customers Integration Yields Small Solution Size design time. Automatic compensation eliminates the Integrated High- and Low-Side MOSFETs need for external compensation circuitry and allows Efficient On-Chip BabyBuck Regulator for Self- changes to the output inductor and capacitor, without the Bias Output need to manually redesign the compensation circuitry. Startup into a Prebiased Output An on-board PMBus-compliant serial bus interface Performance Optimized for Communication and enables communication with a supervisory controller for Computing Systems monitoring and fault management. A full suite of power- Differential Remote Voltage Sensing Enables management features eliminates the need for compli- 1.25% V Accuracy over Temperature OUT cated and expensive sequencing and monitoring ICs. (-40C to +85C) Basic DC-DC conversion operation can be set up through 4.5V to 14V Wide Input Range pin strapping and does not require user-configuration Output Voltage Range from 0.5V to 5.25V firmware. This allows for rapid development of the power- External Synchronization supply subsystem before board-level systems engineer- ing is completed. Maxim provides support hardware and Applications software for configuring the device. Servers Storage Systems The MAX15303 is available in a 40-pin, 6mm x 6mm TQFN Routers/Switches package with an exposed pad and operates over the -40C Base-Station Equipment to +85C temperature range. Power Modules Ordering Information and Typical Operating Circuit appear InTune is a trademark of Maxim Integrated Products, Inc. at end of data sheet. PMBus is a trademark of SMIF, Inc. This product is subject to a license from Power-One, Inc., Maxim patents apply: 7498781, 7880454, 7696736, 7746048, related to digital power technology patents owned by Power- 7466254, 798613, 7498781, 8,120,401, 8,014,879. One, Inc. This license does not extend to merchant market stand-alone power-supply products. 19-7119 Rev 2 9/15MAX15303 6A Digital PoL DC-DC Converter with InTune Automatic Compensation Absolute Maximum Ratings PWR to PGND .......................................................-0.3V to +18V 1P8 to DGND .......................................................-0.3V to +2.2V PVIN to PGND.......................................................-0.3V to +18V CIO, SET, PG, ADDR0, ADDR1, SYNC, TEMPX, LX to PGND........................................... -0.3V to (V + 0.3V) SALRT to DGND ..............................................-0.3V to +4V PVIN LXSNS to SGND ......................................................-2V to +14V EN, SCL, SDA to DGND .........................................-0.3V to +4V INSNS to SGND ....................................................-0.3V to +14V PGND to SGND ....................................................-0.3V to +0.3V OUTP, OUTN, DCRP, DCRN to SGND ................-0.3V to +5.5V DGND to SGND ...................................................-0.3V to +0.3V 3P3 to SGND................................. -0.3V to the minimum of +4V Electrostatic Discharge (ESD) Rating or (V + 0.3V) Human Body Model (HBM) .........................................2500V GDRV GDRV to SGND ............................. -0.3V to the minimum of +6V Junction Temperature ......................................................+125C or (V + 0.3V) Operating Temperature Range ........................... -40C to +85C PWR LBI to PGND...........................................-0.3V to (V + 0.3V) Continuous Power Dissipation (T = +70C) PWR A LBO to PGND ....................... (V - 0.3V) to (V + 0.3V) TQFN (derate 37mW/C above +70C) .....................2963mW GDRV GDRV BST to LX ................................................................ -0.3V to +6V Storage Temperature Range ............................ -65C to +150C BST to PGND ........................................................-0.3V to +24V Lead Temperature (soldering, 10s) .................................+300C BST to GDRV ........................................................-0.3V to +24V Soldering Temperature (reflow) .......................................+260C 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. Package Thermal Characteristics (Note 1) TQFN Junction-to-Ambient Thermal Resistance ( ) ..........27C/W Junction-to-Case Thermal Resistance ( ) ..................1.7C/W JA 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 (All settings = factory default, V = V V = 12V, V = V = V = 0V, V = 1.2V, f = 600kHz. PWR PVIN = INSNS SGND DGND PGND OUT SW Specifications are for T = T = -40C to +85C, typical values are at T = T = +25C. See the Typical Operating Circuit, unless A J A J otherwise noted.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS INPUT SUPPLY Input Voltage Range V 4.5 14 V PWR BabyBuck bias supply, driver not 10 switching Input Supply Current I mA PWR Linear mode bias supply, driver not 24 50 switching Input Overvoltage-Lockout V Input rising 14.3 15.2 16.0 V OVLO(PWR) Threshold Rising edge 3.8 4.1 4.4 Input Undervoltage-Lockout V V UVLO(PWR) Threshold Hysteresis 0.24 BIAS REGULATORS 3P3 Output Voltage V I = 0mA 3.3 V 3P3 LOAD(3P3) 1P8 Output Voltage V I = 0mA 1.80 V 1P8 LOAD(1P8) STARTUP/SHUTDOWN TIMING From V > V , until ready to IN UVLO(PWR) Firmware Initialization t 25 ms 1 enable (Figure 2) Maxim Integrated 2 www.maximintegrated.com