TPS40090QPWRRB Texas Instruments In Stock
TPS40090QPWRRB is a multiphase synchronous buck controller by Texas Instruments designed for high-current CPU and DSP core power supplies. Key specs: 4-phase operation, 0.8 V reference, up to 28 V input. From competitive pricing, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Pin Count
- 24
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TPS40090QPWRRB?
- 4-phase synchronous buck controller for high-current point-of-load regulation
- 0.8 V precision internal reference for tight output voltage accuracy
- Supports up to 28 V input enabling broad input rail compatibility
- Automotive-qualified (Q-grade) with AEC-Q100 compliance for harsh environments
What is TPS40090QPWRRB used for?
The TPS40090QPWRRB is primarily used in multiphase DC-DC converter designs powering high-current processor cores in servers, telecommunications equipment, and automotive ECUs. Its 4-phase architecture distributes current across multiple phases to reduce output ripple and thermal stress on individual components, enabling power delivery well above 50 A at tightly regulated core voltages. Automotive system designers benefit from its Q-grade qualification for reliable operation in under-hood and cabin electronics.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for TPS40090QPWRRB?
Compatible alternatives and drop-in replacements for TPS40090QPWRRB:
Switching Controller, Current-mode, 120A, 1000kHz Switching Freq-Max, BICMOS, PDSO24
Switching Controller, Current-mode, 120A, 1000kHz Switching Freq-Max, BICMOS, PDSO24
Switching Controller, Voltage-mode, 1200kHz Switching Freq-Max, BICMOS, PDSO24
Switching Controller, Current-mode, 120A, 1000kHz Switching Freq-Max, BICMOS, PQCC28
Frequently Asked Questions
How many phases does the TPS40090QPWRRB support and why does it matter for high-current loads?
The TPS40090QPWRRB supports 4-phase synchronous buck operation, which divides the total output current across 4 interleaved switching phases. This reduces input and output ripple by a factor of 4 compared to single-phase designs, lowers per-phase inductor current, and spreads heat across multiple FETs. Processors drawing 50 A or more at 0.9 V to 1.3 V core voltages benefit directly from this multiphase approach.
What input voltage range does the TPS40090QPWRRB accept for server or automotive applications?
The TPS40090QPWRRB accepts input voltages up to 28 V, covering standard 12 V server bus rails as well as 24 V automotive supply lines. Its 0.8 V internal reference sets the output accurately for sub-1 V core supplies, and the wide input range allows a single design to target both datacenter power modules and automotive body control modules requiring multiphase regulation.
Is the TPS40090QPWRRB qualified for automotive applications?
Yes, the Q-suffix designation on the TPS40090QPWRRB indicates AEC-Q100 automotive qualification, meaning it has passed rigorous accelerated stress tests for temperature cycling, humidity, and electrostatic discharge. This makes it suitable for under-hood automotive ECUs and infotainment power stages operating across the full -40°C to 125°C automotive temperature range with the reliability standards required by Tier 1 automotive suppliers.
How does the TPS40090QPWRRB compare to a single-phase controller for a 60 A CPU power stage?
A single-phase controller delivering 60 A would require oversized inductors and MOSFETs to handle the full current, generating significant heat at a single point. The TPS40090QPWRRB spreads this across 4 phases of 15 A each, enabling use of smaller 10 µH inductors and standard 30 A MOSFETs per phase, reducing BOM cost and improving thermal balance on the PCB while achieving lower output voltage ripple at the 0.8 V reference setpoint.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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