- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄69061 > PM6652TR (STMICROELECTRONICS) SWITCHING CONTROLLER, 600 kHz SWITCHING FREQ-MAX, QCC32 PDF資料下載
參數(shù)資料
| 型號(hào)： | PM6652TR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 600 kHz SWITCHING FREQ-MAX, QCC32 |
| 封裝： | 5 X 5 MM, 1 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 |
| 文件頁數(shù)： | 30/53頁 |
| 文件大?。?/td> | 2519K |
| 代理商： | PM6652TR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁當(dāng)前第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁
Device description
PM6652
36/53
Doc ID 16867 Rev 3
If the current sourced by IMONFB pin is greater than IMAX for more than 4 ms (typ.) the
average current limit fault is detected and the IC latches off: the MOS drivers are put in high
impedance and the internal discharge MOSFET is turned on (see Figure 37). A COREON
or SVCC toggle is required in order to restart the device.
Every time the IMONFB pin current becomes lower than IMAX, the internal timer is reset
(see Figure 38); as a consequence the inductor current which can cause the average
current limit fault is given by:
Equation 16
In order to set the right average current limit threshold, the PM6652 internal parameters and
also external components accuracy must be considered.
A complete equation for the average current limit threshold worst case variation is:
Equation 17
assuming
δR
G/RG the accuracy of RG, αIMAX<10% the internal current reference error,
VIMON,off<1 mV the IMON maximum offset, GSNS the NTC thermal compensation network
attenuation (see Equation 11),
δR
SNS/RSNS the inductor DCR or precision resistor accuracy
and
δG
SNS/GSNS the thermal compensation network gain error, due to NTC and others
resistors accuracy (see Equation 25). If the thermal compensation network is not used
and/or the current sensing filter resistors value is higher than the suggested one (as
explained it Section 8.7: Current sensing on page 31) the previous equation must be
modified in order to take account of DCR thermal drift and current sensing additional offset.
DCR
G
MAX
L
AVCL
,
OUT
AVCL
R
I
i
≥
Δ
=
Figure 37.
Average current limit - recovery
Figure 38.
Average current limit detected
()
δ
+
δ
+
+
α
+
δ
=
δ
SNS
AVCL
SNS
off
,
IMON
IMAX
G
AVCL
WC
,
AVCL
G
R
I
R
G
V
R
I
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PM6652 | SWITCHING CONTROLLER, 600 kHz SWITCHING FREQ-MAX, QCC32 |
| PM6675STR | 3 A SWITCHING CONTROLLER, QCC24 |
| PM6675S | 3 A SWITCHING CONTROLLER, QCC24 |
| PM6681ATR | 0.4 A DUAL SWITCHING CONTROLLER, QCC32 |
| PMA4118HSF/C | 1-OUTPUT 18 W DC-DC REG PWR SUPPLY MODULE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PM6670 | 制造商:STMicroelectronics 功能描述: |
| PM6670AS | 功能描述:DC/DC 開關(guān)控制器 DDR 2/3 Memory Pwr Cntrl RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(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 |
| PM6670ASTR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Complete DDR2/3 Mem Pwr supply controllr 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 |
| PM6670ATR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Complete DDR2/3 Mem Pwr supply controllr 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 |
| PM6670S | 功能描述:DC/DC 開關(guān)控制器 DDR 2/3 Memory Pwr Cntrl RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。