- 您現(xiàn)在的位置：買賣IC網 > PDF目錄383159 > ISL6569CR-T (INTERSIL CORP) Multi-Phase PWM Controller PDF資料下載
參數(shù)資料
| 型號： | ISL6569CR-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Multi-Phase PWM Controller |
| 中文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封裝： | 5 X 5 MM, PLASTIC, MO-220-VHHD, MLFP-32 |
| 文件頁數(shù)： | 8/22頁 |
| 文件大?。?/td> | 497K |
| 代理商： | ISL6569CR-T |
8
FN9085.7
December 29, 2004
Interleaving
The switching of each channel in a multi-phase converter is
timed to be symmetrically out of phase with the other
channel. In a 2-phase converter, channel-2 switches half a
cycle after channel-1. As a result, the converter has a ripple
frequency twice that of either phase. Figure 2 illustrates the
multiplicative effect on output ripple frequency. The two
channel currents (IL1and IL2), combine to form the AC ripple
current and the DC load current. The ripple component has
twice the ripple frequency of either channel current. Each
PWM pulse is terminated half of a cycle, or 2.0
μ
s, after the
PWM pulse of the previous phase. The peak-to-peak current
waveform for each phase is about 7A, and the dc components
of the inductor currents combine to feed the load.
In addition, the peak-to-peak amplitude of the combined
inductor currents is reduced in proportion to the number of
phases. To understand the reduction of ripple current
amplitude in the multi-phase circuit, examine the equation
R
ISEN1
ERROR
AMPLIFIER
FB
ISEN1
V
OUT
PWM1
H
+
+
-
FIGURE 1. SIMPLIFIED BLOCK DIAGRAM OF A ISL6569 CONVERTER
I
OUT
μ
P
LOAD
C
O
x 1
-
RGND
VSEN
VDIFF
DAC
&
REFERENCE
COMP
VIN
R
ISEN2
ISEN2
PWM2
H
VIN
L
1
L
2
+
CURRENT
SENSE
AVERAGE
+
-
-
-
+
+
-
CURRENT
SENSE
PWM
CIRCUIT
PWM
CIRCUIT
+
x0.1
100
μ
A
IOUT
OFS
FIGURE 2. PWM AND INDUCTOR-CURRENT WAVEFORMS
FOR 2-PHASE CONVERTER
1
μ
s/DIV
PWM2, 5V/DIV
PWM1, 5V/DIV
IL2, 7A/DIV
IL1, 7A/DIV
IL1 + IL2, 7A/DIV
ISL6569
相關PDF資料 |
PDF描述 |
|---|---|
| ISL6569CRZ | Multi-Phase PWM Controller |
| ISL6569CB | Multi-Phase PWM Controller |
| ISL6569CBZ | Multi-Phase PWM Controller |
| ISL6569CR | Multi-Phase PWM Controller |
| ISL6571EVAL1 | Complementary MOSFET Driver and Synchronous Half-Bridge Switch |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ISL6569CRZ | 功能描述:IC REG CTRLR DIVIDER PWM 32-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝: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 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 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) |
| ISL6569CRZ-T | 功能描述:IC REG CTRLR DIVIDER PWM 32-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝: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 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 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) |
| ISL6571CR | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Intersil Corporation 功能描述: |
| ISL6571CR-T | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| ISL6571CRZ | 功能描述:IC MOSF DRVR/SYNC SW COMPL 68QFN RoHS:是 類別:集成電路 (IC) >> PMIC - MOSFET，電橋驅動器 - 內部開關 系列:- 標準包裝:1,000 系列:- 類型:高端/低端驅動器 輸入類型:SPI 輸出數(shù):8 導通狀態(tài)電阻:850 毫歐，1.6 歐姆 電流 - 輸出 / 通道:205mA，410mA 電流 - 峰值輸出:500mA，1A 電源電壓:9 V ~ 16 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:PG-DSO-20-45 包裝:帶卷 (TR) |
發(fā)布緊急采購，3分鐘左右您將得到回復。