參數(shù)資料
型號(hào)： ISL6420AIRZ-TK
廠商： INTERSIL CORP
元件分類： 穩(wěn)壓器
英文描述： Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
中文描述： 0.05 A SWITCHING CONTROLLER, 1400 kHz SWITCHING FREQ-MAX, PQCC20
封裝： 4 X 4 MM, GREEN, PLASTIC, MO-220, QFN-20
文件頁(yè)數(shù)： 18/20頁(yè)
文件大?。?/td> 560K
代理商： ISL6420AIRZ-TK
18
FN9169.1
October 13, 2005
These equations assume linear voltage-current transitions
and do not adequately model power loss due the reverse-
recovery of the lower MOSFET’s body diode. The
gate-charge losses are dissipated by the ISL6420A and
don't heat the MOSFETs. However, large gate-charge
increases the switching interval, t
SW
which increases the
upper MOSFET switching losses. Ensure that both
MOSFETs are within their maximum junction temperature at
high ambient temperature by calculating the temperature
rise according to package thermal-resistance specifications.
A separate heatsink may be necessary depending upon
MOSFET power, package type, ambient temperature and air
flow.
Schottky Selection
Rectifier D2 is a clamp that catches the negative inductor
swing during the dead time between turning off the lower
MOSFET and turning on the upper MOSFET. The diode must
be a Schottky type to prevent the parasitic MOSFET body
diode from conducting. It is acceptable to omit the diode and
let the body diode of the lower MOSFET clamp the negative
inductor swing, but efficiency will drop one or two percent as a
result. The diode's rated reverse breakdown voltage must be
greater than the maximum input voltage.
ISL6420A
相關(guān)PDF資料
PDF描述
ISL6420A Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller(單片同步降壓脈寬調(diào)制控制器)
ISL6420AIAZ-TK Circular Connector; No. of Contacts:22; Series:MS27473; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:12; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:12-35 RoHS Compliant: No
ISL6420IAZ-TK PCB Relay; Contacts:SPDT; Contact Carry Current:500mA; Coil Voltage DC Max:9V; Relay Terminals:SMT Gullwing; Coil Resistance:405ohm; Contact Rating:10mA at 30VAC; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):No RoHS Compliant: Yes
ISL6420IRZ-T Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
ISL6420IA-TK Advanced Single Synchronous Buck Pulse-Width Modulation (PWM) Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISL6420AIRZ-TKR5264 功能描述:IC REG CTRLR BUCK PWM VM 20-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:275kHz 占空比:50% 電源電壓:18 V ~ 110 V 降壓:無(wú) 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:是 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR)
ISL6420AIRZ-TKS2698 制造商:Intersil Corporation 功能描述:PB-FREE W/ANNEAL SYNC BUCK PWM CONT. WITH 4.5V-28V INPUT,20L - Tape and Reel
ISL6420AIRZ-TKS2705 制造商:Intersil Corporation 功能描述:CISCO, ISL6420AIRZ-TK W/CONTAINER LABELING, SPECIAL CHANGE C - Rail/Tube
ISL6420BEVAL1Z 功能描述:EVAL BOARD 1 FOR ISL6420B RoHS:是 類別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - DC/DC 與 AC/DC（離線）SMPS 系列:* 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開(kāi)關(guān):3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969
ISL6420BEVAL2Z 功能描述:EVAL BOARD 2 FOR ISL6420B RoHS:是 類別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - DC/DC 與 AC/DC（離線）SMPS 系列:* 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開(kāi)關(guān):3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969
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