TPS5102

TPS5102 DUAL, HIGH-EFFICIENCY CONTROLLER FOR NOTEBOOK PC POWER D Dual, Step-Down for Notebook System Power D 4.5 V to 25 V Input Voltage Range D Adjustable Output Voltage D 95% Efficiency Achievable D PWM/Skip Mode Control Maintains High Efficiency Under Light Load Conditions D Fixed-Frequency Operation D Resistorless Current Protection D Fixed High-Side Driver Voltage D Low Quiescent Current (0.6 mA, <1 µA for Standby) D Small 30-Pin TSSOP D EVM Available (TPS5102EVM-135) description SLVS239 - SEPTEMBER 1999 DBT PACKAGE (TOP VIEW) INV1 1 FB1 2 SOFTSTART1 3 PWM_SKIP 4 CT 5 RT 6 GND 7 REF 8 STBY1 9 STBY2 10 VCC 11 COMP 12 SOFTSTART2 13 FB2 14 INV2 15 30 LH1 29 OUT1_u 28 LL1 27 OUT1_d 26 OUTGND1 25 TRIP1 24 VCC_CNTP 23 TRIP2 22 VREF5 21 REG5V_IN 20 OUTGND2 19 OUT2_d 18 LL2 17 OUT2_u 16 LH2 The TPS5102 is a dual, high efficiency controller designed for notebook system power requirements. Under light load conditions, high efficiency is maintained as the controller switches from the PWM mode to the lower frequency Skip mode. These two operating modes, along with the synchronous-rectifier drivers, dead-time, and very low quiescent current, allow power to be conserved and the battery life extended, under all load conditions. The resistor-less current protection and fixed high-side driver voltage simplify the system design and reduce the external parts count. The wide input voltage range and adjustable output voltages allow flexibility for using the TPS5102 in notebook power sup...