TPS53314RGFR

The TPS53314 is a D-CAP™ mode, 6A synchronous switch with integrated MOSFETs. This device is designed for ease of use, low external component count, and compact package power systems. The device features single-rail input support, one 20 mΩ and one 7.5 mΩ integrated MOSFET, 1% accuracy, 0.6 V reference, and integrated boost switch. Key competitive features include: >96% peak efficiency, 3 V to 15 V wide input voltage range, ultra-low external component count, D-CAP™ mode control for ultra-fast transient response, selectable auto-skip and PWM operation modes, internal soft-start control, adjustable frequency with no compensation required. The conversion input voltage range is 3 V to 15 V, the supply voltage range is 4.5 V to 25 V, and the output voltage range is 0.6 V to 5.5 V. The TPS53314 is available in a 5 mm×7 mm 40-pin QFN package with a specified temperature range of -40°C to 85°C. The TPS53314 is a high-efficiency, single channel, synchronous buck converter suitable for low output voltage point-of-load applications in computing and similar digital consumer applications. The device features proprietary D-CAP™mode control combined with an adaptive on-time architecture. This combination is ideal for building modern low duty ratio, ultra-fast load step response DC-DC converters. The output voltage ranges from 0.6 V to 5.5 V. The conversion input voltage range is from 3 V up to 15 V. The D-CAP™mode uses the ESR of the output capacitor(s) to sense the device current. One advantage of this control scheme is that it does not require an external phase compensation network. This allows a simple design with a low external component count. Eight preset switching frequency values can be chosen using a resistor connected from the RF pin to ground or the VREG pin. Adaptive on-time control tracks the preset switching frequency over a wide input and output voltage range while allowing the switching frequency to increase at the step-up of the load. The TPS53314 has a MODE pin to select between auto-skip mode and forced continuous conduction mode (FCCM) for light load conditions. The MODE pin also sets the selectable soft-start time ranging from 0.7 ms to 5.6 ms.

Applications

• Servers and desktop computers
• Laptops
• Telecommunications equipment

Key features

• Conversion input voltage range: 3 V to 15 V
• VDD input voltage range: 4.5 V to 25 V
• Output voltage range: 0.6 V to 5.5 V
• 5V LDO output with integrated power MOSFET supporting 6A continuous output current
• <10 μA shutdown current
• Auto-Skip Eco-mode™ for improved light-load efficiency
• D-CAP™ mode with fast transient response
• Switching frequency selectable from 250 kHz to 1 MHz via single external resistor
• Integrated ±1%, 0.6V reference
• 0.7-ms, 1.4-ms, 2.8-ms, and 5.6-ms selectable internal voltage servo soft-start
• Pre-bias startup capability
• Integrated boost switch
• Overcurrent limit adjustable via external resistor
• Overvoltage/undervoltage, UVLO, and overtemperature protection
• Full ceramic output capacitor support
• Open-drain power-good indicator
• 40-pin QFN package with PowerPAD™