TPS53353DQPR

The TPS53353 is a D-CAP™ mode, 20A synchronous buck converter with integrated MOSFETs. It is designed for ease of use, minimal external component count, and space-constrained power systems. The device features 5.5mΩ/2.2mΩ integrated MOSFETs, a precise 1% 0.6V reference, and an integrated boost switch. Competitive features include: 1.5V to 15V conversion input voltage range, very low external component count, D-CAP™ mode control for ultra-fast transient response, automatic skip mode operation, internal soft-start control, selectable frequency, and no compensation required. The conversion input voltage range is 1.5V to 15V, supply voltage range is 4.5V to 25V, and output voltage range is 0.6V to 5.5V. The device is available in a 5mm×6mm, 22-pin QFN package, with a rated operating temperature range of -40°C to 85°C.

Applications

• Server/Storage
• Workstation and Desktop
• Telecom Infrastructure

Key features

• Conversion input voltage range: 1.5V to 15V
• VDD input voltage range: 4.5V to 25V
• 92% buck conversion efficiency at 12V to 1.5V under 20A current conditions
• Output voltage range: 0.6V to 5.5V
• 5V LDO output
• Single-rail input support
• Integrated power MOSFET with 20A continuous output current
• Auto-skip Eco-mode™ for high efficiency at light load
• <10μA shutdown current
• D-Cap+™ mode for fast transient response
• Switching frequency selectable from 250kHz to 1MHz via external resistor
• Selectable auto-skip or PWM-only operation
• Integrated 1% 0.6V reference voltage
• Internal voltage servo soft-start options: 0.7ms, 1.4ms, 2.8ms, and 5.6ms
• Integrated boost switch
• Pre-bias startup capability
• Adjustable overcurrent limit with temperature compensation
• Overvoltage, undervoltage, UVLO, and overtemperature protection
• All-ceramic output capacitor compatible
• Open-drain power-good indicator
• Assembled with NexFET™ power block technology
• 22-pin QFN package with PowerPAD™