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參數(shù)資料
| 型號： | ISL6537ACRZ-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | ACPI Regulator/Controller for Dual Channel DDR Memory Systems |
| 中文描述： | 3.3 A DUAL SWITCHING CONTROLLER, 280 kHz SWITCHING FREQ-MAX, PQCC28 |
| 封裝： | 6 X 6 MM, ROHS COMPLIANT, PLASTIC, MO-220VJJC, QFN-28 |
| 文件頁數(shù)： | 3/15頁 |
| 文件大?。?/td> | 488K |
| 代理商： | ISL6537ACRZ-T |
11
FN9143.3
possible. Position the output inductor and output capacitors
between the upper and lower MOSFETs and the load.
The critical small signal components include any bypass
capacitors, feedback components, and compensation
components. Place the PWM converter compensation
components close to the FB and COMP pins. The feedback
resistors should be located as close as possible to the FB
pin with vias tied straight to the ground plane as required.
Feedback Compensation - PWM Buck Converters
Figure 3 highlights the voltage-mode control loop for a
synchronous-rectified buck converter. The output voltage
(VOUT) is regulated to the Reference voltage level. The error
amplifier output (VE/A) is compared with the oscillator (OSC)
triangular wave to provide a pulse-width modulated (PWM)
wave with an amplitude of VIN at the PHASE node. The
PWM wave is smoothed by the output filter (LO and CO).
The modulator transfer function is the small-signal transfer
function of VOUT/VE/A. This function is dominated by a DC
Gain and the output filter (LO and CO), with a double pole
break frequency at FLC and a zero at FESR. The DC Gain of
the modulator is simply the input voltage (VIN) divided by the
peak-to-peak oscillator voltage
VOSC.
VDDQ
5VSBY
ISLAND ON POWER PLANE LAYER
ISLAND ON CIRCUIT AND/OR POWER PLANE LAYER
L1
COUT1
CIN
5VDUAL
KEY
COMP
ISL6537A
UGATE
R4
R2
CBP
FB
DRIVE3
5VSBY
FIGURE 2. PRINTED CIRCUIT BOARD POWER PLANES
AND ISLANDS
R1
VDAC
FB3
C2
VIA CONNECTION TO GROUND PLANE
COUT5
LO
AD
LO
AD
Q1
R11
R12
PHASE
R3
C3
C1
Q2
12VATX
CBP
GNDP
P12V
Q3
LGATE
VDDQ(2)
VTT(2)
COUT2
LO
AD
VDDQ
VTT
GND PAD
VGMCH
L2
COUT3
CIN
3.3VATX
COMP4
PWM4
R8
R6
FB4
R5
C6
LO
AD
Q1
R7
C7
C5
Q2
MOSFET
DRIV
E
R
DRIVE2
VTT_GMCH/CPU
FB2
COUT4
LO
AD
R9
R10
Q3
3.3VATX
FIGURE 3. VOLTAGE-MODE BUCK CONVERTER
COMPENSATION DESIGN AND OUTPUT
VOLTAGE SELECTION
VDDQ
REFERENCE
LO
CO
ESR
VIN
V
OSC
ERROR
AMP
PWM
DRIVER
(PARASITIC)
ZFB
+
-
REFERENCE
R1
R3
R2
C3
C1
C2
COMP
VDDQ
FB
ZFB
ISL6537A
ZIN
COMPARATOR
DRIVER
DETAILED COMPENSATION COMPONENTS
PHASE
VE/A
+
-
+
-
ZIN
OSC
R4
V
DDQ
0.8
1
R
1
R
4
-------
+
×
=
ISL6537A
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| ISL6537CR | 功能描述:IC REG/CTRLR ACPI DUAL DDR 28QFN RoHS:否 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 應(yīng)用說明:Ultrasound Imaging Systems Application Note 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:37 系列:- 應(yīng)用:醫(yī)療用超聲波成像，聲納 電流 - 電源:- 電源電壓:2.37 V ~ 6 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:56-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-TQFN-EP（8x8） 包裝:管件 |
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| ISL6537CRZA-TR5160 | 功能描述:IC REG/CTRLR ACPI DUAL DDR 28QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 應(yīng)用說明:Ultrasound Imaging Systems Application Note 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:37 系列:- 應(yīng)用:醫(yī)療用超聲波成像，聲納 電流 - 電源:- 電源電壓:2.37 V ~ 6 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:56-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-TQFN-EP（8x8） 包裝:管件 |
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