參數(shù)資料
型號(hào)： PM6680TR
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： 0.4 A DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32
封裝： 5 X 5 MM, 1 MM HEIGHT, 0.50 MM PITCH, LEAD FREE, VFQFPN-32
文件頁(yè)數(shù)： 38/49頁(yè)
文件大小： 2931K
代理商： PM6680TR
PM6680
Device description
43/49
Equation 39
(Let's assume the maximum temperature Tmax = 75 °C in RDSon calculation)
OUT2:
Equation 40
Equation 41
(Let's assume Tmax = 75 °C in RDSon calculation)
5.
Input capacitor
Maximum input capacitor RMS current is about 2.8 A. Then ICinRMS > 2.8 A.
We put three 10 uF ceramic capacitors with Irms = 1.5 A.
6.
Synchronous rectifier
OUT1: Shottky diode STPS1L30M
OUT2: Shottky diode STPS1L30M
7.
Integrator loop
(Refer to Figure 37)
OUT1: The ripple is smaller than 40mV, then the virtual ESR network is required.
CINT = 1 nF; Cfilt = 47 pF; RINT =1 k
C = 5.6 nF; R= 36 k
; R1 = 3 k
OUT2: The ripple is smaller than 40 mV, then the virtual ESR network is required.
CINT = 1 nF; Cfilt = 110pF; RINT = 1 k
C = 5.6 nF; R = 22 k
; R1 = 3.3 k
8.
Output feedback divider
OUT1: R1 = 10 k
; R2 = 6.8 k
OUT2: R1 = 11 k
; R2 = 1.8 k
9.
Layout guidelines
The layout is very important in terms of efficiency, stability and noise of the system. It is
possible to refer to the PM6680 demoboard for a complete layout example.
For good PC board layout follows these guidelines:
●
Place on the top side all the power components (inductors, input and output capacitors,
MOSFETs and diodes). Refer them to a power ground plan, PGND. If possible, reserve
a layer to PGND plan. The PGND plan is the same for both the switching sections.
●
AC current paths layout is very critical (see Figure 41 on page 44). The first priority is to
minimize their length. Trace the LS MOSFET connection to PGND plan as short as
≈
≡
670
m
25
.
16
A
100
A
12
.
4
RCSENSE
A
2
.
4
2
(min)
I
(max)
I
(min)
I
L
LOAD
Lvalley
=
=
≈
≡
680
m
25
.
16
A
100
A
2
.
4
RCSENSE
相關(guān)PDF資料
PDF描述
PM6685TR DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32
PM6686 SWITCHING CONTROLLER, QCC32
PM75B6L1C060 AC MOTOR CONTROLLER, DMA19
PMB2304T PLL FREQUENCY SYNTHESIZER, 220 MHz, PDSO14
PMB2306R PLL FREQUENCY SYNTHESIZER, 120 MHz, PDSO16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PM6681A 功能描述:DC/DC 開(kāi)關(guān)控制器 Dual Synch CTRLR Adj Voltage LDO 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
PM6681A_08 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Dual synchronous step-down controller with adjustable LDO
PM6681ATR 功能描述:DC/DC 開(kāi)關(guān)控制器 DUAL STEP-DOWN CONTROLLER W/ADJ LDO 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
PM6685 功能描述:DC/DC 開(kāi)關(guān)控制器 Dual 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
PM6685_07 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Dual step-down main supply controller with auxilary voltages for notebook system power
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*