All trademarks are the property of their respective owners.
DescriptionThe TPS54424RNVR is afull-featured 17-V (19-V maximum), 4-Asynchronous step-down DC/DC converter in a 3.5 mm × 3.5 mm HotRod? QFN package.
The device is optimized for small solution size through high efficiency and integratingthe high-side and low-side MOSFETs. Further space savings are achieved through peak current modecontrol, which reduces component count, and by selecting a high switching frequency, reducing theinductor footprint.
The peak current mode control simplifies the loop compensation and provides fasttransient response. Cycle-by-cycle peak current limiting on the high-side and low-side sourcingcurrent limit protects the device in overload situations. Hiccup limits MOSFET power dissipation ifa short circuit or over loading fault persists.
A power good supervisor circuit monitors the regulator output. The PGOOD pin is anopen-drain output and goes high impedance when the output voltage is in regulation. An internaldeglitch time prevents the PGOOD pin from pulling low unless a fault has occurred.
A dedicated EN pin can be used to control the regulator on/off and adjust the inputundervoltage lockout. The output voltage start-up ramp is controlled by the SS/TRK pin, whichallows operation as either a standalone power supply or in tracking situations.
Feature
- Small3.5-mm × 3.5-mm HotRod? QFN Package
- Integrated14.1-m? and 6.1-m? MOSFETs
- Peak Current Mode Control With Fast TransientResponse
- 200-kHz to 1.6-MHz Fixed SwitchingFrequency
- Synchronizes to External Clock
- 0.6-V VoltageReference ±0.85% Over Temperature
- 0.6-V to 12-V Output VoltageRange
- Hiccup Current Limit
- Safe Start-Up into Pre-BiasedOutput Voltage
- Adjustable Soft Start and PowerSequencing
- Adjustable Input Undervoltage Lockout
- 3-μAShutdown Current
- Power Good Output Monitor for Undervoltage andOvervoltage
- Output Overvoltage Protection
- Non-latch ThermalShutdown Protection
- –40°C to 150°C Operating JunctionTemperature
- Create a Custom Design Using the TPS54424 With theWEBENCH? Power Designer
All trademarks are the property of their respective owners.
DescriptionThe TPS54424 is afull-featured 17-V (19-V maximum), 4-Asynchronous step-down DC/DC converter in a 3.5 mm × 3.5 mm HotRod? QFN package.
The device is optimized for small solution size through high efficiency and integratingthe high-side and low-side MOSFETs. Further space savings are achieved through peak current modecontrol, which reduces component count, and by selecting a high switching frequency, reducing theinductor footprint.
The peak current mode control simplifies the loop compensation and provides fasttransient response. Cycle-by-cycle peak current limiting on the high-side and low-side sourcingcurrent limit protects the device in overload situations. Hiccup limits MOSFET power dissipation ifa short circuit or over loading fault persists.
A power good supervisor circuit monitors the regulator output. The PGOOD pin is anopen-drain output and goes high impedance when the output voltage is in regulation. An internaldeglitch time prevents the PGOOD pin from pulling low unless a fault has occurred.
A dedicated EN pin can be used to control the regulator on/off and adjust the inputundervoltage lockout. The output voltage start-up ramp is controlled by the SS/TRK pin, whichallows operation as either a standalone power supply or in tracking situations.
