The TPS54494 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54494 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, and low standby current solution. The main control loops of the TPS54494 use the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54494 to maintain high efficiency during lighter load conditions. The TPS54494 is able to adapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR, ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5V to 18V.
●The TPS54494 is available in a 4.4 mm × 5 mm 16-pin TSSOP (PWP) and 4 mm × 4 mm 16-pin VQFN (RSA) package, and is specified for an ambient temperature range from –40°C to 85°C.
● D-CAP2 Control Mode
● Fast Transient Response
● No External Parts Required For Loop Compensation
● Compatible with Ceramic Output Capacitors
● Wide Input Voltage Range : 4.5 V to 18 V
● Output Voltage Range: 0.76V to 7V
● Highly Efficient Integrated FETs Optimized
●for Low Duty Cycle Applications
● 90 mΩ (High Side) and 60 mΩ
●(Low Side)
● High Initial Reference Accuracy
● 4A CH1 / 2A CH2 Continuous Load Current
● Low-Side rDS(on) Loss-Less
●Current Sensing
● Fixed Soft Start : 1 ms
● Non-Sinking Pre-Biased Soft Start
● Powergood
● 700 kHz Switching Frequency
● Cycle-by-Cycle Over-Current Limit Control
● OCL/UVLO/TSD Protections
● Hiccup Timer for Overload Protection
● Adaptive Gate Drivers with Integrated
●Boost PMOS Switch
● OCP Constant Due To Thermally Compensated
●rDS(on) with 4000ppm/°C
● 16-Pin HTSSOP, 16-Pin VQFN
● Auto-Skip Eco-mode for High Efficiency at Light Load
