TPS5102 Datasheet, PDF (1/31 Pages) Texas Instruments – DUAL, HIGH-EFFICIENCY CONTROLLER FOR NOTEBOOK PC POWER

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
C_T 5
R_T 6
GND 7
REF 8
STBY1 9
STBY2 10
V_CC 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 supply applications.
5V
+
R3
C1
GND
R7
Q1
C3 ^R5
C7
U1
TPS5102DBT
D1
R8
L1
Vo1
Q2
+
C10
C4
C12
C8
R2
R9
C2
R10
C5
C6
R4 ^C9
R1
R6
C11
C13
Q3
+
Vo2
D2
R11
L2
Q4
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1999, Texas Instruments Incorporated
1