TPS54A24 Texas instruments

TPS54A24

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TPS54A24

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Описание

The TPS54A24 is a full-featured 17-V, 10-A synchronous step-down DC/DC converter in a standard 4 mm × 4 mm WQFN package.The device is optimized for small solution size through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through peak-current-mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor footprint.The peak-current-mode control simplifies the loop compensation and provides fast transient response. Cycle-by-cycle peak current limiting on the high-side and low-side sourcing current limit protects the device in overload situations. Hiccup limits MOSFET power dissipation if a short circuit or over loading fault persists. A power-good supervisor circuit monitors the regulator output. The PGOOD pin is an open-drain output and goes high impedance when the output voltage is in regulation. An internal deglitch 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 input undervoltage lockout. The output voltage start-up ramp is controlled by the SS/TRK pin, which allows operation as either a standalone power supply or in tracking situations.

Standard 4-mm × 4-mm WQFN package
–40°C to +150°C Operating junction temperature
200-kHz to 1.6-MHz Fixed switching frequency
Peak-current-mode control
Synchronizes to external clock
0.6-V Voltage reference ±0.85% over temperature
0.6-V to 12-V Output voltage range
Safe start-up into prebiased output voltage
Hiccup current limit
Adjustable soft start and power sequencing
Adjustable input undervoltage lockout
Power-good output monitor for undervoltage and overvoltage
3-µA Shutdown current
Output overvoltage protection
Non-latch thermal shutdown protection
Create a custom design using the TPS54A24 with the WEBENCH^® Power Designer

Vin (min) (V)	4.5
Vin (max) (V)	17
Vout (min) (V)	0.6
Vout (max) (V)	12
Iout (max) (A)	10
Iq (typ) (mA)	0.58
Switching frequency (min) (kHz)	200
Switching frequency (max) (kHz)	1600
EMI features	Low parasitic Hotrod packaging
Features	Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking
Operating temperature range (°C)	-40 to 150
Rating	Catalog
Regulated outputs (#)	1
Control mode	current mode
Duty cycle (max) (%)	98
Type	Converter