參數(shù)資料
型號(hào): TPS54973PWP
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: 16 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28
封裝: GREEN, PLASTIC, HTSSOP-28
文件頁數(shù): 7/22頁
文件大小: 604K
代理商: TPS54973PWP
TPS54973
SLVS453A FEBRUARY 2003 REVISED FEBRUARY 2005
www.ti.com
15
THERMAL SHUTDOWN
The device uses the thermal shutdown to turn off the power
MOSFETs and disable the controller if the junction
temperature exceeds 150°C. The device is released from
shutdown automatically when the junction temperature
decreases to 10°C below the thermal shutdown trip point,
and starts up under control of the slow-start circuit.
Thermal shutdown provides protection when an overload
condition is sustained for several milliseconds. With a
persistent fault condition, the device cycles continuously;
starting up by control of the soft-start circuit, heating up due
to the fault condition, and then shutting down upon
reaching the thermal shutdown trip point. This sequence
repeats until the fault condition is removed.
POWER-GOOD (PWRGD)
The power good circuit monitors for undervoltage
conditions on VSENSE. If the voltage on VSENSE is 10%
below the reference voltage, the open-drain PWRGD
output is pulled low. PWRGD is also pulled low if VIN is
less than the UVLO threshold or SS/ENA is low, or a
thermal shutdown occurs. When VIN ≥ UVLO threshold,
SS/ENA ≥ enable threshold, and VSENSE > 90% of Vref,
the open drain output of the PWRGD pin is high. A
hysteresis voltage equal to 3% of Vref and a 35 s falling
edge deglitch circuit prevent tripping of the power good
comparator due to high frequency noise.
相關(guān)PDF資料
PDF描述
TPS54974PWP 16 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28
TPS54974PWPG4 16 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28
TPS54974PWPR 16 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28
TPS54980PWP 16 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28
TPS55383PWPRG4 7 A DUAL SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS54973PWPG4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3.3V Inp 9A Sync Buck Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54973PWPR 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3.3V Inp 9A Sync Buck Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54973PWPRG4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3.3V Inp 9A Sync Buck Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54974 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL INPUT BUS (2.5V, 3.3V) 9-A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs
TPS54974PWP 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Dl Inp Bus 3.3 2.5V 9A Output Synch Buck RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5