TI TPS40132RHBR

The TPS40322 device is a dual-output synchronous buck controller that can also be configured as a single-output, two-phase controller. 180° out-of-phase operation reduces input current ripple and extends input capacitor lifetime. Bidirectional master-slave synchronization provides evenly distributed phase shifting for four-output systems, further reducing input ripple and suppressing system noise.

The wide input voltage range supports 3.3V, 5V, and 12V buses. Accurate reference voltage meets the precise voltage requirements of ASICs, potentially reducing output capacitance requirements. Independent PGOOD signals provide flexibility for system monitoring and sequencing. The two channels are independently controlled, with individually programmable soft-start times. Voltage-mode control is employed to reduce noise sensitivity and ensure low duty cycle conversion.

• Dual-output or dual-phase synchronous buck controller
• 180° out-of-phase operation reduces input ripple
• Input voltage range: 3V to 20V
• Output voltage range: 0.6V to 5.6V
• Adjustable frequency: 100kHz to 1MHz
• Bidirectional SYNC pin with 0°/180° or 90°/270° phase shift
• Voltage mode control with input feedforward
• Accurate current sharing in dual-phase operation
• Independent power-good outputs
• Independent enable and programmable soft-start with pre-bias startup support
• ±0.5%, 600mV reference voltage
• Output undervoltage/overvoltage protection and input undervoltage lockout
• Independent overcurrent limit settings
• Hiccup-mode overcurrent protection
• Precision inductor DCR or resistive current sensing
• Remote sensing for dual-phase applications
• Internal N-channel FET drivers
• Integrated bootstrap switch
• 5mm×5mm 32-pin VQFN package

• Multi-rail systems
• Telecom base stations
• Switch and router networks
• xDSL broadband access
• Server and storage systems