Texas Instruments TPS53688RSBR
| Parameters | |
|---|---|
| Series | D-CAP+™ |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 40-WFQFN Exposed Pad |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C |
| Output Type | Transistor Driver |
| Number of Outputs | 2 |
| Supplier Device Package | 40-WQFN (5x5) |
| Output Configuration | Positive |
| Function | Step-Down |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) | 4.5V ~ 17V |
| Control Features | Current Limit |
| Frequency - Switching | - |
| Synchronous Rectifier | No |
| Serial Interfaces | PMBus |
| Output Phases | 8 |
| Duty Cycle (Max) | - |
| Clock Sync | No |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | TPS53688 |
| REACH Status | REACH Unaffected |
| Other Names | 296-TPS53688RSBRTR |
| Standard Package | 3,000 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
TPS53688RSBR -- Buck Regulator Positive Output Step-Down PMBus DC-DC Controller IC
The TPS53688RSBR from Texas Instruments (TI) is a high-performance, dual-output, multi-phase synchronous buck controller designed for advanced computing and enterprise infrastructure applications. Housed in a compact 40-pin QFN package, this digital controller supports up to 8-phase configurations for the primary output and 2 phases for the secondary output, enabling precise power delivery for high-current processors, ASICs, and FPGAs. It operates over an input voltage range of 4.5V to 17V and delivers output voltages from 0.5V to 3.3V with ±0.5% voltage accuracy. The device integrates TI's proprietary AutoBalance™ technology for current sharing across phases, ensuring optimal thermal performance and efficiency. Its PMBus™-compatible interface allows real-time telemetry monitoring, dynamic voltage scaling, and fault management, making it ideal for adaptive power systems.
Buck Regulator Key Features
The TPS53688RSBR excels in scalability and precision, offering dual-loop digital control (D-CAP+™ architecture) for fast transient response and stability. It supports NVM (non-volatile memory) for storing custom configurations, reducing setup time. Key features include programmable switching frequencies (200 kHz to 1.5 MHz), phase shedding for light-load efficiency, and integrated MOSFET drivers. Advanced protection mechanisms such as overcurrent (OCP), overvoltage (OVP), undervoltage (UVP), and thermal shutdown enhance system reliability. The controller also supports TI's PowerStack™ technology for multi-phase interleaving, minimizing input capacitance requirements and EMI.
Applications
This controller is tailored for high-density, high-efficiency power systems in data centers, servers, networking equipment, and telecom infrastructure. It is widely used to power CPUs, GPUs, memory arrays, and AI accelerators in cloud computing and enterprise hardware. Additional applications include industrial automation (PLC controllers, robotics), test and measurement systems, and high-end storage solutions. Its ability to manage dual outputs with independent phase configurations makes it suitable for multi-rail designs requiring tight voltage regulation and dynamic load handling.
Selection Advantages
The TPS53688RSBR offers unmatched flexibility and integration for complex power architectures. Its digital interface simplifies customization, enabling rapid deployment across diverse voltage requirements. Compared to analog controllers, it reduces external components while improving transient performance and efficiency. The multi-phase design ensures scalability for high-current loads (up to 500A+ with paralleling), and its compatibility with TI's Fusion Digital Power Designer software streamlines debugging and optimization. Engineers benefit from reduced thermal stress, lower BOM costs, and compliance with industry standards like Intel VR13/VR14 and AMD SVI2.
Alternative Buck Regulator ic Models
- TI TPS53647: A 7-phase single-output controller with PMBus support, optimized for mid-range server CPUs.
- TI TPS53632: Dual-output controller with 6+1 phases, targeting cost-sensitive industrial applications.
- Analog Devices ADM1278: Hot-swap controller with power monitoring, suited for redundant power systems.
- Infineon IR35215: 8-phase digital controller with integrated DrMOS support, designed for high-end GPUs.
- Renesas ISL68220: Dual-loop, 6-phase controller with adaptive voltage scaling for AI/ML hardware.
