參數(shù)資料
型號(hào)： L6730TR
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
封裝： HTSSOP-20
文件頁(yè)數(shù)： 34/52頁(yè)
文件大?。?/td> 1569K
代理商： L6730TR
Summary description
L6730 - L6730B
4/52
Doc ID 11938 Rev 3
1
Summary description
The controller is an integrated circuit designed using BiCMOS-DMOS, v5 (BCD5)
technology that provides complete control logic and protection for high performance, step-
down DC/DC and niPOL converters.
It is designed to drive N-Channel MOSFETs in a synchronous rectified
buck converter
topology. The output voltage of the converter can be precisely regulated down to 600 mV,
with a maximum tolerance of ±0.8%, or to 1.2 V, when one of the internal references is used.
It is also possible to use an external reference from 0 V to 2.5 V.
The input voltage can range from 1.8 V to 14 V, while the supply voltage can range from 4.5
V to 14 V. High peak current gate drivers provide for fast switching to the external power
section and the output current can be in excess of 20 A, depending on the number of the
external MOSFETs used. The PWM duty cycle can range from 0% to 100% with a minimum
on-time (TON(MIN)) lower than 100 ns, making conversions with a very low duty cycle and
very high switching frequency possible.
The device provides voltage-mode control. It includes a 400 kHz free-running oscillator that
is adjustable from 100 kHz to 1 MHz. The error amplifier features a 10 MHz gain-bandwidth-
product and 5 V/s slew-rate that permits to realize high converter bandwidth for fast
transient response. The device monitors the current by using the RDS(ON) of both the high-
side and low-side MOSFET(s), eliminating the need for a current sensing resistor and
guaranteeing an effective over current-protection in all the application conditions. When
necessary, two different current limit protections can be externally set through two external
resistors. A leading edge adjustable blanking time is also available to avoid false over-
current-protection (OCP) intervention in every application condition.
It is possible to select the HICCUP mode or the constant current protection (L6730B) after
the soft-start phase.
During this phase constant current protection is provided. It is possible to select the sink-
source or the source-only mode capability
(before the device powers on) by acting on a
multifunction pin (L6730). The L6730 disables the sink mode capability during the soft-start
in order to allow a proper start-up also in pre-biased output voltage conditions. The L6730B
can always sink current and, so it can be used to supply the DDR memory BUS termination.
Other features include Master-Slave synchronization (with 180° phase shift), Power-Good
with adjustable delay, over voltage-protection, feed back disconnection, selectable UVLO
threshold (5 V and 12 V Bus), and thermal shutdown. The HTSSOP20 package allows the
realization for very compact DC/DC converters.
相關(guān)PDF資料
PDF描述
L6732CTR 20 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
L6732 SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
L6732TR SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
L6788ATR 3-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40
L6788A 3-CHANNEL POWER SUPPLY SUPPORT CKT, QCC40
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6731B 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 Adj. Step-Down w/ Synch Rectification RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
L6731BTR 功能描述:IC CTRLR ADJ STEP DOWN 16-TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR)
L6731D 功能描述:DC/DC 開(kāi)關(guān)控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
L6731DTR 功能描述:DC/DC 開(kāi)關(guān)控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
L6732 功能描述:DC/DC 開(kāi)關(guān)控制器 Adjustable Step Down Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
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