Texas Instruments CSD95372AQ5M

Overview

CSD95372AQ5M from Texas Instruments is a synchronous buck NexFET™ power stage integrating driver IC and dual MOSFETs in a single SON 5 mm × 6 mm package. It delivers 60 A continuous output current, achieves 92.4% system efficiency at 30 A (VIN = 12 V, VOUT = 1.2 V, fSW = 500 kHz), and supports up to 2 MHz switching frequency for high-density VR12.x and VR11.x point-of-load converters in server and graphics card applications.

For engineers reviewing the CSD95372AQ5M datasheet, CSD95372AQ5M pinout, CSD95372AQ5M application, or CSD95372AQ5M equivalent, key selection considerations include tri-state PWM compatibility with 3.3 V/5 V controllers, integrated thermal analog output (TAO) for multiphase temperature monitoring, diode emulation mode with FCCM control, and ultra-low power loss of 3.3 W at 30 A under nominal conditions.

Technical Context

The CSD95372AQ5M implements a high-frequency synchronous buck power stage with integrated gate driver, HS/LS NexFET MOSFETs, and analog temperature sensing. Its functional block includes a trimmable dead-time controller optimized to prevent shoot-through, a zero-crossing comparator enabling diode emulation mode, and an internal 3.3 V LDO for TAO fault reporting.

It operates with external VDD supply (4.5–5.5 V), accepts tri-state PWM inputs with 30 ns falling propagation delay and 50 ns rising delay, and features active thermal shutdown at 150–165 °C with 25 °C hysteresis. The device requires bootstrap capacitor (≥0.1 µF X7R) between BOOT and BOOT_R and supports input voltages up to 16 V.

Key Specifications

Pinout & Package

Package: SON 5 mm × 6 mm, 13-pin exposed-pad surface-mount package with PGND-connected thermal pad. Optimized for low-inductance layout and high-density multiphase VRMs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck power stage applications.

Compared with CSD95372AQ5MT, the CSD95372AQ5M offers identical performance with volume-optimized packaging; versus MP87653GQZ, it provides superior thermal visibility and light-load efficiency via diode emulation and analog TAO, at the cost of slightly lower max fSW.

Availability

CSD95372AQ5M is available at Aetrix Electronics and suitable for server VRMs, GPU power delivery, desktop motherboard designs, and DDR5 memory regulation requiring stable component supply and long-term production continuity.

Supply support for CSD95372AQ5M 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-efficiency power conversion and precision analog signal chains.

The CSD95372AQ5M belongs to TI's NexFET™ power stage product line, engineered specifically for high-current, high-frequency synchronous buck converters in computing and graphics applications where thermal performance, layout simplicity, and multiphase scalability are critical.

FAQ

What is the maximum input voltage rating for the CSD95372AQ5M?

The CSD95372AQ5M has an absolute maximum VIN-to-PGND rating of 25 V for transient conditions (<10 ns) and 16 V for continuous operation. Its recommended operating input voltage is up to 16 V, making it suitable for 12 V input systems common in server and desktop VRMs. Exceeding 16 V continuously risks exceeding safe operating area limits and accelerating wear-out mechanisms in the integrated MOSFETs.

How does the TAO pin function during thermal shutdown in the CSD95372AQ5M?

During thermal shutdown, the CSD95372AQ5M pulls the TAO pin to 3.3 V to signal fault condition. This voltage level is distinct from its normal analog temperature output (0.6 V at 25°C, 8 mV/°C slope). The internal ORing diode ensures that in multiphase configurations, only the highest-temperature CSD95372AQ5M drives the shared TAO bus, enabling centralized thermal monitoring without additional logic.

Can the CSD95372AQ5M operate with a 3.3 V PWM controller?

Yes, the CSD95372AQ5M supports 3.3 V PWM controllers. Its PWM input thresholds are VPWML = 0.7–0.9 V (low) and VPWMH = 2.3–2.7 V (high), accommodating both 3.3 V and 5 V logic families. The tri-state function remains fully operational, and propagation delays (tPDL = 30 ns, tPDH = 3 µs) are specified across the full VDD range of 4.5–5.5 V, ensuring reliable timing at either logic level.

What is the purpose of the FCCM pin on the CSD95372AQ5M?

The FCCM pin on the CSD95372AQ5M selects between forced continuous conduction mode (FCCM) and diode emulation mode (DEM). When FCCM is driven high (>2.0 V), the device operates in CCM regardless of inductor current polarity. When FCCM is pulled low (<0.8 V), zero-cross detection activates, and DEM engages after three consecutive zero-cross events-improving light-load efficiency in VR applications without external circuitry.

Is external bootstrap diode required for the CSD95372AQ5M?

No, the CSD95372AQ5M integrates the bootstrap diode internally. Only an external ceramic capacitor (≥0.1 µF, 16 V X7R) between BOOT and BOOT_R pins is required to sustain high-side FET gate drive. This eliminates discrete diode placement, reduces BOM count, and avoids reverse recovery losses associated with external Schottky diodes.