高压USB PD电源开关
设计文件
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High-Voltage Back-to-Back OVP Switch with Current Sense
The NX30P0121UK is an advanced 3 A power switch. It includes UnderVoltage LockOut (UVLO), VOUT OverVoltage LockOut (OVLO), OVLO adjustable pin, and over-temperature protection circuits. It is designed to automatically isolate the power switch terminals when a fault condition occurs. Both VIN and VOUT pins have 29 V tolerance in shutdown mode.
The device has a default internal 14.5 V overvoltage protection threshold in VOUT and adjustable OVP threshold by resistor divider from VOUT. ISNS pin is current source output proportional to input current from VIN to VOUT when the device is enabled.
The device is enabled by external EN pin. When EN pin is driven LOW, the device is in shutdown mode where all internal circuitries are off and OVP switch is off. When EN pin is driven HIGH and VIN is valid, the OVP switch soft starts after VIN debounce time to limit the inrush current.
NX30P0121UK is offered in a small 12 bumps, 1.65 x 1.25 x 0.525 mm WLCSP package.
产品详情
Features
- Wide supply voltage range from 2.5 V to 20 V
- Switch maximum 3 A continuous current
- 29 V tolerance on both VIN and VOUT pin
- 54 mΩ (typical) Low ON resistance
- Adjustable overvoltage protection threshold, internal 14.5 V VOUT OVLO
- Built-in slew rate control for inrush current limit
- ISNS to monitor input current from VIN to VOUT
- Protection circuitry – Over-temperature protection – Overvoltage Protection – UnderVoltage LockOut
- ESD protection – HBM ANSI/ESDA/JEDEC JS-001 Class 2 exceeds 2 kV – CDM (JESD22-C101E)
- Specified from -40°C to +85°C
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