TPS40428 Series
Dual Output, 2-Phase, Stackable PMBus Synchronous Buck Driverless Controller
Manufacturer: Texas Instruments
Catalog(1 parts)
| Part | Output Type | Frequency - Switching▲▼ | Frequency - Switching▲▼ | Serial Interfaces | Operating Temperature▲▼ | Operating Temperature▲▼ | Supplier Device Package | Output Configuration | Function | Topology | Number of Outputs▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Voltage - Supply (Vcc/Vdd)▲▼ | Clock Sync▲▼ | Synchronous Rectifier▲▼ | Mounting Type | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS40428RHATBuck Regulator Positive Output Step-Down PMBus DC-DC Controller IC 40-VQFN (6x6) | PWM Signal | 200000 Hz | 1500000 Hz | PMBus | 125 °C | -40 °C | 40-VQFN (6x6) | Positive | Step-Down | Buck | 2 ul | 4.5 V | 20 V | Surface Mount | 40-VFQFN Exposed Pad |
Key Features
• Smart Power Mode in Factory Default (Compatible with TI Smart Power Stage CSD95378B and Pin-for-Pin Equivalent to TPS40425 – Non-Smart Power Mode in Factory Default)Single Supply Operation: 4.5 V to 20 VVOUTfrom 0.6 VDual or Multi-Phase Synchronous Buck ControllerIndividual High-Speed AVS InterfaceFast Transient ResponseStackable up to Four Phases2-, 3-, or 4-Phase Interleaved Phase ShiftsAccurate Current SharingPMBus Interface CapabilityMargining Up/Down with 2-mV StepProgrammable Fault Limit and Response±0.8% VOUTAccuracy Current Monitoring±3°C External Temperature Monitoring In Smart Power ModeProgrammable UVLO ON/OFF ThresholdsProgrammable Soft-Start Time, Turn-On Delay, and Turn-Off DelayOn-Chip Non-Volatile Memory (NVM) to Store Custom Configurations0.6-V Reference Voltage with 0.5% Accuracy from –40°C to 125°CProgrammable ƒSWfrom 200 kHz to 1.5 MHzSupports Pre-biased OutputDifferential Remote SensingSynchronization to an Extermal ClockOC/OV/UV/OT Fault Protection40-Pin, 6 mm × 6 mm, QFN PackageSmart Power Mode in Factory Default (Compatible with TI Smart Power Stage CSD95378B and Pin-for-Pin Equivalent to TPS40425 – Non-Smart Power Mode in Factory Default)Single Supply Operation: 4.5 V to 20 VVOUTfrom 0.6 VDual or Multi-Phase Synchronous Buck ControllerIndividual High-Speed AVS InterfaceFast Transient ResponseStackable up to Four Phases2-, 3-, or 4-Phase Interleaved Phase ShiftsAccurate Current SharingPMBus Interface CapabilityMargining Up/Down with 2-mV StepProgrammable Fault Limit and Response±0.8% VOUTAccuracy Current Monitoring±3°C External Temperature Monitoring In Smart Power ModeProgrammable UVLO ON/OFF ThresholdsProgrammable Soft-Start Time, Turn-On Delay, and Turn-Off DelayOn-Chip Non-Volatile Memory (NVM) to Store Custom Configurations0.6-V Reference Voltage with 0.5% Accuracy from –40°C to 125°CProgrammable ƒSWfrom 200 kHz to 1.5 MHzSupports Pre-biased OutputDifferential Remote SensingSynchronization to an Extermal ClockOC/OV/UV/OT Fault Protection40-Pin, 6 mm × 6 mm, QFN Package
Description
AI
The TPS40428 device is a PMBus, synchronous buck, driverless controller. It operates in smart power mode with factory default settings, and it can operate in non-smart power mode after PMBus programing and power reboot. It can be configured for dual-output or 2-phase operation. It is also stackable up to 4 phases to support load current as high as 120 A. Interleaved phase shift for 2-. 3-, or 4-phases reduce the input and output ripples therefore reducing input and output capacitance.
The wide input voltage range can support 5-V and 12-V intermediate supply buses. The 0.5% reference voltage satisfies the need of precision voltage to the modern ASICs.
Using the PMBus standard, the TPS40428 device can program reference voltage, fault limit, UVLO threshold, soft-start time and turn-on and turn-off delay.
In addition, the device implements an accurate measurement system to monitor the output voltages, currents and temperatures for individual channels.
The TPS40428 device is a PMBus, synchronous buck, driverless controller. It operates in smart power mode with factory default settings, and it can operate in non-smart power mode after PMBus programing and power reboot. It can be configured for dual-output or 2-phase operation. It is also stackable up to 4 phases to support load current as high as 120 A. Interleaved phase shift for 2-. 3-, or 4-phases reduce the input and output ripples therefore reducing input and output capacitance.
The wide input voltage range can support 5-V and 12-V intermediate supply buses. The 0.5% reference voltage satisfies the need of precision voltage to the modern ASICs.
Using the PMBus standard, the TPS40428 device can program reference voltage, fault limit, UVLO threshold, soft-start time and turn-on and turn-off delay.
In addition, the device implements an accurate measurement system to monitor the output voltages, currents and temperatures for individual channels.