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Texas Instruments CSD95378BQ5MCT
- Part No.:
- CSD95378BQ5MCT
- Manufacturer:
- Texas Instruments
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- 12-PowerTFDFN
- Datasheet:
-
CSD95378BQ5MCT.pdf
- Description:
- IC HALF BRIDGE DRIVER 60A 12VSON
- Quantity:
- Payment:
- Shipping:
Inventory:322
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Product details
Overview
CSD95378BQ5MCT from Texas Instruments is a synchronous buck NexFET™ Smart Power Stage integrating driver IC and dual power MOSFETs for high-current DC-DC conversion. It delivers 60-A continuous output current, achieves 93.4% system efficiency at 30 A (VIN=12 V, VOUT=1.2 V, fSW=500 kHz), and supports up to 1.25 MHz switching frequency in a 5-mm × 6-mm DualCool™ VSON-CLIP package-optimized for server VR12.x and GPU voltage regulation.
For engineers reviewing the CSD95378BQ5MCT datasheet, CSD95378BQ5MCT pinout, CSD95378BQ5MCT application, or CSD95378BQ5MCT equivalent, key selection criteria include its bidirectional current sense accuracy, temperature-compensated analog TAO output, tri-state PWM compatibility, integrated bootstrap diode, and fault monitoring for overcurrent, high-side short, and overtemperature events.
Technical Context
The CSD95378BQ5MCT implements a high-frequency synchronous buck topology with integrated gate driver and optimized FET pair, enabling fast transient response and low conduction/switching losses. Its internal current sensing uses differential IOUT/REFIN inputs with temperature compensation, while the TAO/FAULT pin provides analog die temperature reporting (400 mV at 0°C) and thermal shutdown indication.
Control interface includes tri-state PWM input compatible with both 3.3-V and 5-V logic, FCCM pin for forced continuous conduction or diode emulation mode, and ENABLE pin with internal 100-kΩ pulldown. The device operates across –40°C to +125°C ambient and supports VIN up to 16 V with VDD regulated between 4.5 V and 5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Output Current | 60 A at VIN=12 V, VOUT=1.2 V, fSW=500 kHz - enables single-phase support for high-power CPU/GPU cores |
| Peak Efficiency | 93.4% at 30 A - reduces thermal load and improves POL converter power density |
| Switching Frequency | Up to 1.25 MHz - allows smaller external inductors and faster load transient response |
| Current Sense Accuracy | Temperature-compensated bidirectional sensing via IOUT/REFIN - eliminates external sense resistor and improves phase-current balance in multiphase systems |
| Die Temperature Output | Analog TAO voltage (400 mV at 0°C, ~10 mV/°C slope) - enables real-time thermal monitoring without external sensor |
| Fault Protection | Integrated high-side short, overcurrent, and overtemperature detection with FAULT assertion - reduces need for external monitoring circuitry |
| Package Type | VSON-CLIP (DMC), 12-pin, 5.0 mm × 6.0 mm - ultra-low-inductance DualCool™ construction improves thermal dissipation from top and bottom surfaces |
Pinout & Package
Package: VSON-CLIP (DMC), 12-pin, 5.0 mm × 6.0 mm outline with exposed thermal pad and copper clip structure for enhanced thermal and electrical performance. DualCool™ design enables simultaneous top-side and bottom-side heat transfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IOUT | Current sense amplifier output | Provides voltage proportional to phase current; used with REFIN for closed-loop current monitoring |
| REFIN | Current sense reference input | External reference point for differential current sensing; sets zero-current baseline |
| VDD | Gate driver supply | 4.5–5.5 V supply for internal driver and logic; decoupling required near pin |
| ENABLE | Global enable control | Logic-high enables operation; internal 100-kΩ pulldown ensures safe default-off state |
| PGND | Power ground (dual pins) | Pins 4 and 13 connect directly to internal power ground plane; must be tied to low-impedance PCB ground |
| VSW | Switch node | Connects HS-FET source and LS-FET drain; high dv/dt node requiring tight layout and shielding |
| PWM | Tri-state PWM input | Accepts 3.3-V/5-V logic; Hi-Z state forces both FETs off after hold-off time (t3HT) |
| FCCM | Mode select for conduction | Low = diode emulation; high = forced continuous conduction; internal 5-µA pullup to 3.3 V |
| TAO/FAULT | Temp analog output / fault indicator | Reports die temperature linearly; pulled to 3.3 V during thermal shutdown; supports wire-OR in multiphase |
| BOOT | Bootstrap capacitor connection | Drives HS-FET gate; requires ≥0.1-µF X7R ceramic cap to BOOT_R |
| BOOT_R | Bootstrap return | Internal connection to VSW; completes bootstrap loop for high-side drive |
| VIN | Main input supply | 16-V max input; connects to bulk capacitors; high-current path requiring wide copper pours |
Key Features
| Feature | Design Value |
|---|---|
| Integrated driver + dual FETs | Eliminates discrete gate driver design effort and layout sensitivity while optimizing dead time for shoot-through prevention |
| Temperature-compensated current sense | Enables accurate per-phase current measurement across –40°C to +125°C without calibration or external components |
| DualCool™ packaging | Reduces junction-to-board thermal resistance to 1.5°C/W and enables >60-A operation in compact 5×6-mm footprint |
| Diode emulation with FCCM | Improves light-load efficiency by disabling LS-FET during discontinuous conduction, configurable via single pin |
| Integrated bootstrap diode | Removes need for external bootstrap diode, simplifying BOM and improving reliability in high-frequency operation |
Applications
| Server VR12.x Core Regulation | GPU Memory Voltage Regulation |
|---|---|
Use Scenario: High-current, low-voltage core supply for Intel VR12.x-compliant CPUs in dual-socket servers. IC Role / Device Role / Timing Role: Single-phase smart power stage delivering up to 60 A at 1.2 V with dynamic VID tracking. Use Value: Enables compact, high-efficiency VR solution meeting VR12.x transient response and efficiency specs without external current sense resistors. | Use Scenario: Point-of-load regulation for GDDR6 memory subsystems on AI accelerator cards. IC Role / Device Role / Timing Role: Synchronous buck stage operating at 1 MHz to support fast memory access timing and tight voltage tolerance. Use Value: Delivers 93.4% efficiency at 30 A, reducing board-level heat generation and enabling denser memory module layouts. |
| Multiphase Desktop VRM | High-Density POL for Networking ASICs |
Use Scenario: One phase of a 4+1 or 6+2 phase VRM for high-end desktop motherboards supporting DDR5 and PCIe 5.0. IC Role / Device Role / Timing Role: Phase-leg power stage with tri-state PWM interface synchronized to controller's phase interleaving. Use Value: Simplifies phase current balancing via integrated bidirectional sensing and supports <40 ns minimum on-time for low-duty-cycle operation. | Use Scenario: Compact 12-V-to-0.8-V conversion for 50+ W networking ASICs in space-constrained 1U switches. IC Role / Device Role / Timing Role: High-frequency (1.25 MHz) buck stage minimizing output filter size while maintaining <±1% regulation. Use Value: DualCool™ package lowers thermal resistance, allowing full 60-A rating without heatsink in constrained airflow environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck smart power stage applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CSD95372BQ5MCT | Lower 40-A continuous rating; identical pinout and feature set except reduced current capability and slightly lower efficiency (92.8% @ 30 A) | Better suited for mid-tier desktop VRMs or lower-power ASIC supplies where thermal margin is less critical | Select when system peak current stays below 40 A and cost optimization is prioritized over maximum power density |
| ISL99227IRAZ-T | 60-A rated but uses different pinout (13-pin QFN); lacks integrated TAO output and has separate VBST pin instead of BOOT/BOOT_R pair | Requires PCB redesign; preferred in Renesas controller ecosystems with PMBus telemetry requirements | Choose only if migrating from ISL99227-based designs or when PMBus-compatible telemetry is mandatory |
Compared with CSD95378BQ5MCT, CSD95372BQ5MCT offers identical integration and interface but lower current headroom, while ISL99227IRAZ-T provides comparable current rating but demands layout changes and lacks analog temperature reporting-making CSD95378BQ5MCT optimal for TI-controller-based, thermally demanding, high-density VR12.x applications.
Availability
CSD95378BQ5MCT is available at Aetrix Electronics and suitable for server VR12.x core regulation, GPU memory voltage regulation, and high-density POL for networking ASICs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for CSD95378BQ5MCT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and power management technologies, with leadership in high-performance power delivery solutions.
The CSD95378BQ5MCT belongs to TI's NexFET™ Smart Power Stage product line, designed specifically for high-frequency, high-current synchronous buck converters in datacenter, AI accelerator, and high-end computing applications.
FAQ
What is the maximum continuous output current rating for the CSD95378BQ5MCT?
The CSD95378BQ5MCT is rated for 60-A continuous output current under specified conditions: VIN = 12 V, VOUT = 1.2 V, fSW = 500 kHz, LOUT = 0.225 µH, and TA = 25°C. This rating assumes proper PCB thermal design with adequate copper area and airflow. Derating applies at higher ambient temperatures or elevated switching frequencies, as detailed in the thermal information section of the CSD95378BQ5MCT datasheet.
Does the CSD95378BQ5MCT support diode emulation mode, and how is it enabled?
Yes, the CSD95378BQ5MCT supports diode emulation mode via the FCCM pin. When FCCM is held low, the device enters diode emulation mode, turning off the synchronous FET during discontinuous conduction to improve light-load efficiency. An internal 5-µA current source pulls FCCM to 3.3 V if left floating, defaulting to forced continuous conduction mode. This behavior is confirmed in the Pin Functions section of the CSD95378BQ5MCT datasheet.
What is the function of the TAO/FAULT pin on the CSD95378BQ5MCT?
The TAO/FAULT pin on the CSD95378BQ5MCT serves dual functions: it outputs an analog voltage proportional to die temperature (400 mV at 0°C, ~10 mV/°C), and asserts 3.3 V during thermal shutdown. In multiphase systems, multiple TAO pins can be wire-OR'd to report only the highest temperature. A 1-nF ceramic capacitor to PGND is required for stability. This functionality is documented in the Pin Functions table of the CSD95378BQ5MCT datasheet.
Is the CSD95378BQ5MCT pin-compatible with other devices in the CSD9537x family?
Yes, the CSD95378BQ5MCT shares identical pinout, package dimensions, and footprint with CSD95372BQ5MCT and CSD95377BQ5MCT, all using the 12-pin VSON-CLIP (DMC) package. However, current ratings differ: CSD95372BQ5MCT is rated for 40 A, while CSD95377BQ5MCT supports 50 A. Electrical characteristics such as efficiency and power loss scale accordingly, as verified in the respective datasheets for each CSD95378BQ5MCT family member.
What thermal metrics define the CSD95378BQ5MCT's cooling performance?
The CSD95378BQ5MCT specifies RθJC = 5°C/W (junction-to-case, top surface) and RθJB = 1.5°C/W (junction-to-board) under JEDEC test conditions: mounted on a 1-in², 2-oz Cu pad on FR4. These values reflect the DualCool™ package's ability to conduct heat through both top and bottom surfaces. For system-level thermal design, the CSD95378BQ5MCT datasheet recommends specific PCB land patterns and stencil openings to maximize solder joint thermal conductivity.
CSD95378BQ5MCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- NexFET™
- Package/Case:
- 12-PowerTFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Half Bridge
- Applications:
- Synchronous Buck Converters
- Interface:
- PWM
- Load Type:
- Inductive
- Technology:
- Power MOSFET
- Rds On (Typ):
- -
- Current - Output / Channel:
- 60A
- Current - Peak Output:
- 90A
- Voltage - Supply:
- 4.5V ~ 5.5V
- Voltage - Load:
- 4.5V ~ 16V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Features:
- Bootstrap Circuit, Status Flag
- Fault Protection:
- Current Limiting, Over Temperature, Shoot-Through, Short Circuit, UVLO
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-VSON (5x6)
CSD95378BQ5MCT FAQ
1.How can I place an order for CSD95378BQ5MCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CSD95378BQ5MCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CSD95378BQ5MCT reliable?
The price and inventory of CSD95378BQ5MCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CSD95378BQ5MCT is usually 5 days.
3.What payment methods are accepted for CSD95378BQ5MCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CSD95378BQ5MCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CSD95378BQ5MCT?
CSD95378BQ5MCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CSD95378BQ5MCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CSD95378BQ5MCT?
For technical support, including CSD95378BQ5MCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CSD95378BQ5MCT requirements.
6.How does Aetrix verify that CSD95378BQ5MCT is sourced from the original manufacturer or authorized distributors?
All CSD95378BQ5MCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CSD95378BQ5MCT meets industry standards.
7.What is the process for return or replacement of CSD95378BQ5MCT?
All CSD95378BQ5MCT units undergo pre-shipment inspection (PSI). If there is an issue with CSD95378BQ5MCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CSD95378BQ5MCT part is unused and in its original packaging.
Return procedure for CSD95378BQ5MCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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