TPS56300

` 2.8 V 5.5 V Input Voltage Range
` Programmable Dual Output Controller Supports Popular DSP and Microcontroller Core and I/O Voltages
  Switching Regulator Controls Core Voltage
  Low Dropout Controller Regulates I/O Voltage
` Programmable Slow-Start Ensures Simultaneous Powerup of Both Outputs
` Power Good Output Monitors Both Outputs
` Fast Ripple Regulator Reduces Bulk Capacitance for Lower System Costs
` ±1.5% Reference Voltage Tolerance
` Efficiencies Greater than 90%
` Overvoltage, Undervoltage, and Adjustable Overcurrent Protection
` Drives Low-Cost Logic Level N-Channel MOSFETs Through Entire Input Voltage Range
`  Evaluation Module TPS56300EVM139 Available

absolute maximum ratings over operating virtual junction temperature (unless otherwise noted)†
Supply voltage range, V_CC (see Note1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 6 V
Input voltage range: VDRV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 7 V
BOOT to DRVGND (High-side Driver ON) . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 15 V
BOOT to BOOTLO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 7 V
BOOT to HIGHDRV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 7 V
BOOTLO to DRVGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 15 V
DRV to DRVGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  0.3 V to 7 V
BIAS to ANAGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 7 V
INHIBIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 7 V
DROOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  0.3 V to V_CC + 0.3 V
OCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  0.3 V to 7 V
VID0, VID1 (tri-level terminals) . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to V_BIAS + 0.3 V
PWRGD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 6 V
LOSENSE, LOHIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 14 V
IOUTLO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 14 V
HISENSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 7 V
VSENLDO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  0.3 V to 6 V
VSENRR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  0.3 V to 6 V
Voltage difference between ANAGND and DRVGND . . . . . . . . . . . . . . . . . . . . . .  ±300 mV
Continuous total power dissipation . . . . . . . . . . . . . . . . . . .See Dissipation Rating Table
Operating virtual junction temperature range, T_J . . . . . . . . . . . . . . . . . . . 40 to 125
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  65 to 150
Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . 300

† 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 under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

The high performance TPS56300 synchronous-buck regulator provides two supply voltages to power the core
and I/O of digital signal processors, such as the 'C6000 family. The ripple regulator TPS56300, using hysteretic control with droop compensation, is configured for the core voltage and features fast transient response time reducing output bulk capacitance (continued).

The LDO controller drives TPS56300 an external N-channel power MOSFET and functions as an LDO regulator, suitable for powering the I/O or as a power distribution switch. To promote better system reliability during power up, voltage sequencing and protection are controlled such that the core and I/O power up together with the same slow-start voltage. At power down, the LDO and ripple regulator are discharged towards ground for added rotection. The TPS56300 also includes inhibit, slowstart, and under-voltage lockout features to aide in controlling power sequencing. A tri-level voltage identification network (VID) sets both regulated voltages to any of 9 preset voltage pairs from 1.3 V to 3.3 V. Other voltages are possible by implementing an external voltage divider. Strong MOSFET drivers, with a typical peak current rating of 2-A sink and source are included on chip,enabling high system currents beyond 30 A. The high-side driver features a floating bootstrap driver with the  internal bootstrap synchronous rectifier. Many protection features of TPS56300 are incorporated within the device to ensure better system integrity. An open-drain output POWER GOOD status circuit monitors both output voltages, and is  pulled low if either output fall below the threshold. An over current shutdown circuit protects the high-side power MOSFET TPS56300 against short-to-ground faults at load or the phase node, while over voltage protection turnsoff the output drivers and LDO controller if either output exceeds its threshold. Under voltage protection turns off the high-side and low-side MOSFET drivers and the LDO controller if either output is 25% below VREF.

Lossless current-sensing is done by detecting the drain-source voltage drop across the high-side power MOSFET while it is conducting. The TPS56300 is fully compliant with TI DSP power requirements such as the 'C6000 family.