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參數資料
| 型號： | TPS5211PWP |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | HIGH FREQUENCY PROGRAMMABLE HYSTERETIC REGULATOR CONTROLLER |
| 中文描述： | 可編程滯高頻穩壓控制器 |
| 文件頁數： | 1/32頁 |
| 文件大小： | 469K |
| 代理商： | TPS5211PWP |
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TPS5211
HIGH FREQUENCY PROGRAMMABLE HYSTERETIC
REGULATOR CONTROLLER
SLVS243 – SEPTEMBER 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
700 KHz Operation
1.25 MHz Operation With External Driver
1.5% Reference Over Full Operating
Temperature Range
Synchronous Rectifier Driver for Greater
Than 90% Efficiency
Programmable Reference Voltage Range of
1.3 V to 3.5 V
User–Selectable Hysteretic Type Control
Droop Compensation for Improved Load
Transient Regulation
Adjustable Overcurrent Protection
Programmable Softstart
Overvoltage Protection
Active Deadtime Control
Power Good Output
Internal Bootstrap Schottky Diode
Low Supply Current . . . 3-mA Typ
Reduced System Component Count and
Size
description
The TPS5211 is a hysteretic regulator controller which provides an accurate, programmable supply voltage to
microprocessors. An internal 5-bit DAC is used to program the reference voltage to within a range of 1.3 V to
3.5 V. The output voltage can be set to equal the reference voltage or some multiple of the reference voltage.
A hysteretic controller with user-selectable hysteresis and programmable droop compensation is used to
dramatically reduce overshoot and undershoot caused by load transients. Propagation delay from the
comparator inputs to the output drivers is less than 250 ns. Overcurrent shutdown and crossover protection for
the output drivers combine to eliminate destructive faults in the output FETs. The softstart current source is
proportional to the reference voltage, thereby eliminating variation of the softstart timing when changes are
made to the output voltage. PWRGD monitors the output voltage and pulls the open-collector output low when
the output drops 7% below the nominal output voltage. An overvoltage circuit disables the output drivers if the
output voltage rises 15% above the nominal value. The inhibit pin can be used to control power sequencing.
Inhibit and undervoltage lockout assures the 12-V supply voltage and system supply voltage (5 V or 3.3 V) is
within proper operating limits before the controller starts. Single-supply (12 V) operation is easily accomplished
using a low-current divider for the required 5-V signals. The output driver circuits include 2-A drivers with internal
8-V gate-voltage regulators. The high-side driver can be configured either as a ground-referenced driver or as
a floating bootstrap driver. The TPS5211 is available in a 28-pin TSSOP PowerPAD
package. It operates over
a junction temperature range of 0
°
C to 125
°
C.
AVAILABLE OPTIONS
PACKAGE
TSSOP
(PWP)
TJ
0
°
C to 125
°
C
TPS5211PWPR
Copyright
1999, Texas Instruments Incorporated
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.
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.
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IOUT
DROOP
OCP
VHYST
VREFB
VSENSE
ANAGND
SLOWST
BIAS
LODRV
LOHIB
DRVGND
LOWDR
DRV
PWRGD
VID0
VID1
VID2
VID3
VID4
INHIBIT
IOUTLO
LOSENSE
HISENSE
BOOTLO
HIGHDR
BOOT
V
CC
PWP PACKAGE
(TOP VIEW)
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