company blog about Mingjiada Electronics Supply Infineon TDA21520 20A OptiMOS™ Smart Power Stage With Integrated Current Sense

Mingjiada Electronics Supply Infineon TDA21520 20A OptiMOS™ Smart Power Stage With Integrated Current Sense

Shenzhen Mingjiada Electronics Co., Ltd. — a long-term supplier of the Infineon TDA21520 20A OptiMOS™ Smart Power Stage — provides highly integrated power stage devices and comprehensive supply support for multi-phase buck power supply designs in servers, data centres, network communications, AI accelerator cards and high-performance computing platforms. Mingjiada supports enquiries for stock items, sample procurement, bulk orders and BOM fulfilment.

Product Overview
The TDA21520 is a 20A Smart Power Stage device from Infineon’s OptiMOS™ series, primarily used in the power stage design of multi-phase buck converters. The device integrates high-side and low-side OptiMOS MOSFETs with a gate driver into a compact package, reducing the number of external components and simplifying PCB layout. The TDA21520 is designed for high-density power supply systems and is typically used in conjunction with multi-phase PWM controllers to provide power to loads such as CPUs, GPUs, ASICs and FPGAs.

TDA21520 Key Specifications:
Technology platform: OptiMOS™ 5
Integrated components: Low-quiescent-current synchronous buck gate driver + high-side control MOSFET + low-side synchronous MOSFET + active diode structure
Input voltage (VIN): 4.25 V to 16 V
VCC / VDRV supply: 4.25 V to 5.5 V
Output Voltage Range: 0.225 V to 5.5 V
Output Current: 20 A (OCP threshold 36 A)
Switching Frequency: 100 kHz to 1.5 MHz
Current Sensing: On-chip MOSFET current mirror sensing, reporting ratio 5 µA/A, with temperature compensation
Telemetry Accuracy: Current and temperature telemetry accuracy ±5%
Protection functions: Cycle-by-cycle overcurrent protection (OCP) with fault flag, over-temperature protection (OTP) and thermal shutdown (rising threshold 140°C / falling threshold 128°C), high-side MOSFET short-circuit detection (HSS, threshold 560 mV), VDRV and bootstrap undervoltage protection, automatic bootstrap capacitor replenishment
PWM Interface: Compatible with 3.3 V tri-state inputs
Low-Power Modes: Auto-SLEEP (entered 20 µs after PWM tri-state, typical 1.7 mA); DEEP SLEEP (EN pulled low, typical 32 µA)

Key features of the TDA21520:
Integrated driver, diode and two MOSFETs
Input voltage range: 4.25 V to 16 V
Vcc and Vdrv supply voltages: 4.25 V to 5.5 V
Output voltage range: 0.25–5.5 V
On-chip MOSFET current reporting: 5 µA/A
20 A operating current, overcurrent protection (OCP): 36 A
Operating frequency up to 1.5 MHz
High-side MOSFET short-circuit detection and flag
Thermal shutdown
Cycle-by-cycle OCP and fault flag
Automatic sleep and deep sleep modes
Compatible with 3.3 V tri-state PWM input

Typical Applications
The TDA21520 is suitable for server CPU/GPU power supplies, data centre power supplies, AI accelerator cards, network switches and routers, telecommunications base station equipment, FPGA/ASIC multi-phase power supplies, high-performance computing boards, storage systems and embedded high-density power modules. For multi-phase buck designs requiring high efficiency, high power density, fast dynamic response and integrated current/temperature monitoring, the TDA21520 can be considered as one of the power stage options.

For further information regarding stock availability, pricing or sample procurement of the Infineon TDA21520 20A OptiMOS™ smart power stage, please visit the Mingjiada Electronics website (https://www.integrated-ic.com/) for further supply details.