參數(shù)資料
型號(hào)： ISL6560CB-T
廠商： INTERSIL CORP
元件分類： 穩(wěn)壓器
英文描述： Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
中文描述： SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO16
封裝： PLASTIC, MS-012-AC, SOIC-16
文件頁(yè)數(shù)： 11/14頁(yè)
文件大?。?/td> 396K
代理商： ISL6560CB-T
11
FN9011.3
ISL6560
MOSFET Selection and Considerations
In high-current PWM applications, the MOSFET power
dissipation, package selection and heatsink are the
dominant design factors. The power dissipation includes two
loss components; conduction loss and switching loss. These
losses are distributed between the upper and lower
MOSFETs according to duty factor (see the following
equations). The conduction losses are the main component
of power dissipation for the lower MOSFETs, Q2 and Q4 of
Figure 10. Only the upper MOSFETs, Q1 and Q3 have
significant switching losses, since the lower device turns on
and off into near-zero voltage.
The equations assume linear voltage-current transitions and
do not model power loss due to the reverse-recovery of the
lower MOSFET’s body diode. The gate-charge losses are
dissipated by the driver IC and don't heat the MOSFETs.
However, large gate-charge increases the switching time,
t
SW
which increases the upper MOSFET switching losses.
Ensure that both MOSFETs are within their maximum
junction temperature at high ambient temperature by
calculating the temperature rise according to package
thermal-resistance specifications. A separate heat sink may
be necessary depending upon MOSFET power, package
type, ambient temperature and air flow.
Figure 10 shows a schematic of the circuit developed from
the proceeding computations. This circuit is implemented on
the ISL6560/62 Evaluation Board. The next section will
discuss PC board layout.
PC Board Layout Considerations
Like all high-current supplies where low-voltage control
signals in the millivolt range must live with high voltage and
high-current switching signals, PC board layout becomes
crucial in obtaining a satisfactory supply.
Figure 11 shows a simplified diagram of the critical areas of
a PC board layout. This diagram and the following material
represent goals to work towards during the layout phase.
Goals will be compromised during the layout process due to
component placement and space constraints. The following
text reviews these layout considerations in more detail.
Current Sampling
1. Place the current sampling or sense resistor as close as
possible to the upper MOSFET drains. This is important
since the added inductance and resistance increase the
impedance and result in a reduction in drain voltage
during high peak pulse currents.
P
UPPER
I
------------------------------------------------------------
2
r
IN
×
V
×
I
----------------------------------------------------
V
×
t
×
F
S
×
+
=
P
LOWER
I
--------------------------------------------------------------------------------
2
r
IN
×
V
V
–
(
)
×
=
5m
HIP6601ECB
+V
CORE
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
PWRGD
REF
PWM1
PWM2
VCC
CS-
CS+
GND
VID4
VID3
VID2
VID1
VID0
CT
FB
COMP
1
2
3
4
8
7
6
5
PHASE
PVCC
VCC
LGATE
UGATE
BOOT
PWM
GND
1
2
3
4
8
7
6
5
PHASE
PVCC
VCC
LGATE
UGATE
BOOT
PWM
GND
{
{
INPUT
VID CODES
from
PROCSSOR
+V
IN
12V
HIP6601ECB
ISL6560
C14
22k
R11
15k
R12
1k
R5
10
R6
20
R14
330
4.3k
R27
6 - 470
μ
F
2 - 4.7
μ
F
C41-42
1nF
150pF
4.7
μ
F
C40
330pF
C11
15nF
0.1
μ
F
1
μ
F
100pF
C13
0.1
μ
F
1
μ
F
C2
1nF
C10
6 - 1200
μ
F
16 - 22
μ
F
C19, C30,
C34-37,
C39, C45-49,
C60-63
900nH
900nH
C15, C17-18, C29, C50-51
R13
R7
C1
C3
C4
L1
L2
C21, C24-28
L3
1
μ
H
C20
C12
Q2 HUF76145
Q3
HUF76139
Q4
HUF76145
Q1 HUF76139
FIGURE 10. SCHEMATIC DIAGRAM OF A 40A SUPPLY USING THE ISL6560 CONTROLLER AND HIP6601 GATE DRIVERS
相關(guān)PDF資料
PDF描述
ISL6560CBZ Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
ISL6560 Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
ISL6560EVAL1 Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
ISL656062EVAL1 Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
ISL6560CBZ-T Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISL6560CBZ 功能描述:IC REG CTRLR BUCK PWM CM 16-SOIC 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(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)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(wú) 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 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)
ISL6560CBZ-T 功能描述:IC REG CTRLR BUCK PWM CM 16-SOIC 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(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)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(wú) 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 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)
ISL6560EVAL1 功能描述:EVALUATION BOARD ISL6560 RoHS:否 類別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - DC/DC 與 AC/DC（離線）SMPS 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開(kāi)關(guān):3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969
ISL6561CR 功能描述:IC CTRLR PWM MULTIPHASE 40-QFN RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR)
ISL6561CR-T 功能描述:IC CTRLR PWM MULTIPHASE 40-QFN RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR)
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