TI TPS23521PWR

TPS23521 is a high-performance hot-swap controller enabling high-power telecom systems to meet stringent transient requirements. With an absolute maximum voltage rating of 200V, the device easily passes lightning surge tests (IEC61000-4-5). The soft-start capacitor disconnect feature allows the use of smaller hot-swap FETs by limiting inrush current without compromising transient response. Dual hot-swap gate drivers save board space and reduce BOM cost in applications requiring multiple hot-swap FETs. A 400μA pull current supports fast recovery, helping to avoid system resets during lightning surge testing. The dual current limiting feature simplifies compliance with power-down and input step requirements specified by standards such as ATIS 0600315.2013. Additionally, the device provides precise undervoltage and overvoltage protection with programmable thresholds and hysteresis.

• -10V to -80V DC operating voltage, absolute maximum voltage –200V
• Soft-start capacitor disconnect
• Dual hot-swap gate drivers
• 400μA gate pull-up current
• Dual current limiting (VDS-based)
  • 25mV ±4% (low VDS)
  • 3mV ±25% (high VDS)
• Programmable overvoltage (±1.5%) and undervoltage (±2%)
• Programmable hysteresis (±11%)
• Retry after timeout
• 16-pin TSSOP package

• Remote Radio Unit
• Baseband Unit
• Routers and Switches
• Small Cell Base Station
• –48V Telecom Infrastructure