- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄224618 > NX2117ACUTR (MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP) SWITCHING CONTROLLER, PDSO10 PDF資料下載
參數(shù)資料
| 型號(hào)： | NX2117ACUTR |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO10 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-10 |
| 文件頁(yè)數(shù)： | 2/14頁(yè) |
| 文件大小： | 405K |
| 代理商： | NX2117ACUTR |
第1頁(yè)當(dāng)前第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)
NX2116/2116A/2116B/2117/2117A
10
Rev. 3.0
03/14/06
Case 2:
F
LC<FESR<FO
40dB/decade
20dB/decade
Gain(db)
loop gain
LC
F
ESR
F
compensator
power stage
FZ1 Z2
F
O
F
FP2
P1
F
Figure 5 - Bode plot of Type III compensator
(F
LC<FESR<FO)
If electrolytic capacitors are used as output
capacitors, typical design example of type III
compensator in which the crossover frequency is
selected as F
LC<FESR<FO and FO<=1/10~1/5Fs is shown
as the following steps. Here two SANYO MV-WG1500
with 13 m
is chosen as output capacitor.
1. Calculate the location of LC double pole F
LC
and ESR zero F
ESR.
LC
OUT
1
F
2
LC
1
2
1uH 3000uF
2.9kHz
=
×π ××
=
×π ××
=
ESR
OUT
1
F
2
ESRC
1
2
6.5m
3000uF
8.2kHz
=
×π ××
=
×π ×
×
=
2. Set R
2 equal to 10k.
×
=
2
REF
1
OUT
REF
RV
10k
0.8V
R =
8k
V
-V
1.8V-0.8V
Choose R
1=8k.
3. Set zero F
Z2 = FLC and Fp1 =FESR .
4. Calculate C
3 .
3
2
z2
p1
1
11
C =
(-)
2
R
FF
1
11
=
(-)
2
10k
2.9kHz 8.2kHz
=3.5nF
×
×π×
×
×π ×
Choose C
3=3.3nF.
5. Calculate R
3 .
3
P13
1
R
2
FC
1
2
8.2kHz 3.3nF
5.9k
=
×π ××
=
×π ××
=
Choose R
3 =5.9k.
6. Calculate R
4 with FO=60kHz.
OSC
O
23
4
in
23
V2
F
L
RR
R=
V
ESR
RR
1.5V
2
60kHz 1uH 10k
5.9k
=
12V
6.5m
10k
5.9k
=26.9k
×π × ××
××
+
×π ×
×
×
××
+
Choose R
4=26.7k.
5. Calculate C
2 with zero Fz1 at 75% of the LC
double pole by equation (11).
2
Z14
1
C
2
FR
1
2
0.75 2.9kHz 26.7k
2nF
=
×π ××
=
×π ×
×
=
Choose C
2=2.2nF.
6. Calculate C
1 by equation (14) with pole Fp2 at
half the switching frequency.
1
4
P2
1
C
2
RF
1
2
26.7k
300kHz
20pF
=
×π ××
=
×π ×
×
=
Choose C
1=22pF.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NX25P16-VSI | 16M X 1 FLASH 2.7V PROM, PDSO8 |
| NX3225SA-100.000M-STD-CSR-3 | QUARTZ CRYSTAL RESONATOR, 100 MHz |
| NX5A0AE01 | MALE, STRAIGHT TWO PART BOARD CONNECTOR, PRESS FIT |
| NX5B0AE01 | MALE, STRAIGHT TWO PART BOARD CONNECTOR, PRESS FIT |
| NX5C0AE01 | MALE, STRAIGHT TWO PART BOARD CONNECTOR, PRESS FIT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NX2117CUTR | 制造商:MICROSEMI 制造商全稱(chēng):Microsemi Corporation 功能描述:SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT, POWER GOOD & OVER VOLTAGE |
| NX2119 | 制造商:MICROSEMI 制造商全稱(chēng):Microsemi Corporation 功能描述:SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT PROTECTION |
| NX2119A | 制造商:MICROSEMI 制造商全稱(chēng):Microsemi Corporation 功能描述:SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT PROTECTION |
| NX2119ACSTR | 制造商:MICROSEMI 制造商全稱(chēng):Microsemi Corporation 功能描述:SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT PROTECTION |
| NX2119ACUTR | 制造商:MICROSEMI 制造商全稱(chēng):Microsemi Corporation 功能描述:SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT PROTECTION |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。