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參數(shù)資料
| 型號： | ISL6564ACRZ |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Multiphase PWM Controller with Linear 6-Bit DAC Capable of Precision rDS(ON) or DCR Differential Current Sensing |
| 中文描述： | SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, PQCC40 |
| 封裝： | 6 X 6 MM, ROHS COMPLIANT, PLASTIC, MO-220, QFN-40 |
| 文件頁數(shù)： | 15/28頁 |
| 文件大?。?/td> | 636K |
| 代理商： | ISL6564ACRZ |
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15
FN6285.1
March 20, 2007
The ISL6564A incorporates an internal differential remote-
sense amplifier in the feedback path. The amplifier removes
the voltage error encountered when measuring the output
voltage relative to the local controller ground reference point
resulting in a more accurate means of sensing output
voltage. Connect the microprocessor sense pins to the
non-inverting input, VSEN, and inverting input, RGND, of the
remote-sense amplifier. The remote-sense output, V
DIFF
, is
connected to the inverting input of the error amplifier through
an external resistor.
A digital to analog converter (DAC) generates a reference
voltage based on the state of logic signals at pins VID4
through VID12.5. The DAC decodes the a 6-bit logic signal
(VID) into one of the discrete voltages shown in Table 1.
Each VID input offers a 45
μ
A pull-up to an internal 2.5V
source for use with open-drain outputs. The pull-up current
diminishes to zero above the logic threshold to protect
voltage-sensitive output devices. External pull-up resistors
can augment the pull-up current sources if case leakage into
the driving device is greater than 45
μ
A.
Load-Line Regulation
Some microprocessor manufacturers require a precisely-
controlled output resistance. This dependence of output
voltage on load current is often termed “droop” or “l(fā)oad line”
regulation. By adding a well controlled output impedance,
the output voltage can effectively be level shifted in a
direction which works to achieve the load-line regulation
required by these manufacturers.
FIGURE 8. OUTPUT VOLTAGE AND LOAD-LINE
REGULATION WITH OFFSET ADJUSTMENT
I
AVG
EXTERNAL CIRCUIT
R
C
C
C
ISL6564A INTERNAL CIRCUIT
COMP
R
FB
FB
VDIFF
VSEN
RGND
-
+
V
DROOP
ERROR AMPLIFIER
-
+
V
OUT
+
DIFFERENTIAL
REMOTE-SENSE
AMPLIFIER
V
COMP
REF
DAC
R
REF
C
REF
-
+
V
OUT
-
IDROOP
TABLE 1. VOLTAGE IDENTIFICATION (VID) CODES
VID5
VID4
VID3
VID2
VID1
VID0
VDAC
400
mV
200
mV
100
mV
50
mv
25
mV
12.5
mV
1
1
1
1
1
1
OFF
1
1
1
1
1
0
1.3000V
1
1
1
1
0
1
1.2875V
1
1
1
1
0
0
1.2750V
1
1
1
0
1
1
1.2625V
1
1
1
0
1
0
1.2500V
1
1
1
0
0
1
1.2375V
1
1
1
0
0
0
1.2250V
1
1
0
1
1
1
1.2125V
1
1
0
1
1
0
1.2000V
1
1
0
1
0
1
1.1875V
1
1
0
1
0
0
1.1750V
1
1
0
0
1
1
1.1625V
1
1
0
0
1
0
1.1500V
1
1
0
0
0
1
1.1375V
1
1
0
0
0
0
1.1250v
1
0
1
1
1
1
1.1125V
1
0
1
1
1
0
1.1000V
1
0
1
1
0
1
1.0875V
1
0
1
1
0
0
1.0750V
1
0
1
0
1
1
1.0625V
1
0
1
0
1
0
1.0500V
1
0
1
0
0
1
1.0375V
1
0
1
0
0
0
1.0250V
1
0
0
1
1
1
1.0125V
1
0
0
1
1
0
1.0000V
1
0
0
1
0
1
0.9875V
1
0
0
1
0
0
0.9750V
1
0
0
0
1
1
0.9625V
1
0
0
0
1
0
0.9500V
1
0
0
0
0
1
0.9375V
1
0
0
0
0
0
0.9250V
0
1
1
1
1
1
0.9125V
0
1
1
1
1
0
0.9000V
0
1
1
1
0
1
0.8875V
0
1
1
1
0
0
0.8750V
ISL6564A
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| ISL6564ACRZ-T | 功能描述:IC REG CTRLR BUCK PWM VM 40-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) |
| ISL6564AIRZ | 功能描述:IC REG CTRLR BUCK PWM VM 40-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) |
| ISL6564AIRZ-T | 功能描述:IC REG CTRLR BUCK PWM VM 40-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) |
| ISL6564CR | 功能描述:IC REG CTRLR BUCK PWM VM 40-QFN RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
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