TDA21535

TDA21535 specifications:

• Integration: Co-packaged driver, high-side and low-side MOSFETs, and active diode structure
• Input Voltage Range (VIN): 4.25 V to 16 V
• VCC Supply Voltage: 4.25 V to 5.5 V
• Output Voltage Range: 0.225 V to 5.5 V
• Output Current Capability: 35 A
• Switching Frequency: Up to 1.5 MHz
• Current Sensing: On-chip MOSFET current sensing with 5 µA/A gain
• Protection Features:
  • Over-temperature protection with thermal shutdown
  • Cycle-by-cycle over-current protection
  • High-side MOSFET short detection
  • Bootstrap under-voltage protection
• Power-Saving Modes:
  • Auto SLEEP mode after 20 µs of PWM tri-state (1.7 mA typical)
  • DEEP SLEEP mode via EN pin low (32 µA typical)
• PWM Input Compatibility: 3.3 V tri-state
• Package: Compact 4 mm x 5 mm x 0.9 mm PQFN

Additional information:

The TDA21535 from Infineon is a high-efficiency, 35 A OptiMOS™ power stage that integrates multiple essential components into a compact package. Not only does it include high-side and low-side MOSFETs, but it also features an integrated driver and an active diode structure, which ensures optimized performance. Furthermore, because it operates within an input voltage range of 4.25 V to 16 V, it offers significant flexibility for a variety of power applications. In addition to its broad compatibility, it supports output voltages ranging from 0.225 V to 5.5 V, making it highly adaptable. Moreover, with a switching frequency of up to 1.5 MHz, this device is ideal for space-constrained, high-speed designs. Given these specifications, it is especially well-suited for DC-DC conversion in CPUs, GPUs, and memory modules.

Beyond its performance characteristics, the TDA21535 is also equipped with a range of protection features, which not only enhance reliability but also improve safety. For instance, it includes over-temperature protection with thermal shutdown, which helps prevent overheating issues. Additionally, its cycle-by-cycle over-current protection ensures that the system remains stable, even under fluctuating load conditions. In contrast to conventional solutions, this power stage also features high-side MOSFET short detection, reducing the likelihood of catastrophic failures. Moreover, with its on-chip MOSFET current sensing, the device offers precise power monitoring, thereby increasing efficiency. Furthermore, the auto SLEEP and DEEP SLEEP modes significantly reduce power consumption when the device is idle. As a result, the TDA21535 not only delivers high performance but also balances efficiency and safety, making it an excellent choice for demanding power management applications.

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