參數(shù)資料
型號(hào)： TPS65167ARHARG4
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： 4.9 A SWITCHING REGULATOR, 900 kHz SWITCHING FREQ-MAX, PQCC40
封裝： 6 X 6 MM, GREEN, PLASTIC, MO-220VJJD-2, QFN-40
文件頁(yè)數(shù)： 10/41頁(yè)
文件大小： 1270K
代理商： TPS65167ARHARG4
www.ti.com
750kHz
Oszillator
VFB
1.154V
Comparator
GM Amplifier
Sawtooth
Generator
VFB
1.154
AVIN
RHVS
SW
PGND
M1
GM Amplifier
LowGain
Currentlimit
and
SoftStart
M2
SUP
Vref
Overvoltage
Comparator
OVP
ControlLogic
SUP
Softstart
70 W
EN
GD
HVS
5 kW
IDLY
SS
COMP
FB
Softstart (Boost Converter)
High Voltage Stress Test (Boost converter and positive charge pump)
HVS
FB
R1 + R2//R3
Vs
= V
= 1.146V
R2//R3
HSV
FB
R1 x R2
R3 =
Vs
1
x R2 - R1
V
-
÷
è
(3)
SLVS760C – APRIL 2007 – REVISED MARCH 2008
Figure 24. Block Diagram Boost Converter
The main boost converter has an internal softstart to prevent high inrush current during start-up. The device
incorporates a digital softstart increasing the current limit in digital current limit steps. See Figure 2 for the typical
softstart timing.
The TPS65167 and TPS65167A incorporates a high voltage stress test where the output voltage of the boost
converter Vs and the positive charge pump POUT is set to a higher voltage compared to the nominal
programmed output voltage. The High Voltage Stress test is enabled by pulling the HVS pin to high. With HVS =
high, the voltage on POUT, respectively VGH, remains unchanged with the TPS65167A and the TPS65167
regulates to a fixed output voltage of 30 V. The boost converter Vs is programmed to a higher voltage
determined by the resistor connected to RHVS. With HVS = high the RHVS pin is pulled to GND which sets the
voltage for the boost converter during the High Voltage Stress Test. The output voltage for the boost converter
during high voltage stress test is calculated as:
18
Copyright 2007–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS65167 TPS65167A
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參數(shù)描述
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TPS65167RHAT 功能描述:其他電源管理 Compact LCD Bias Supply RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel
TPS65167RHATG4 功能描述:LCD 驅(qū)動(dòng)器 12V/3.5A(I/O) 4-CH Multi-Converter RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
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