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参数资料
| 型号： | ISL6569ACB-T |
| 厂商： | Intersil |
| 文件页数： | 7/22页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 24-SOIC |
| 标准包装： | 1,000 |
| PWM 型： | 电流/电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 2MHz |
| 占空比： | 75% |
| 电源电压： | 4.75 V ~ 5.25 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 包装： | 带卷 (TR) |
ISL6569A
Functional Pin Description
VCC
ISL6569ACB
24 LD SOIC
ISL6569ACR
32 LEAD QFN 5x5
Supplies all the power necessary to operate the chip. The IC
starts to operate when the voltage on this pin exceeds the
GND 1
OVP 2
VID4 3
VID3 4
24 EN
23 FS/DIS
22 PGOOD
21 ISEN1
VID2
NC
rising POR threshold and shuts down when the voltage on
this pin drops below the falling POR threshold. Connect this
pin directly to a +5V supply or through a series 255 ? resistor
to a +12V supply.
VID2 5
VID1 6
VID0 7
OFS 8
COMP 9
FB 10
20 PWM1
19 PWM2
18 GND
17 ISEN2
16 VCC
15 GND
VID1
VID0
NC
OFS
COMP
FB
NC
GND
BOTTOM
SIDE PAD
NC
ISEN1
PWM1
PWM2
GND
ISEN2
NC
ISEN1, ISEN2
Current sense inputs. A resistor connected between these
pins and their respective phase nodes sets a current
proportional to the current in the lower MOSFET during it’s
conduction interval. This current is used as a reference for
IOUT 11
VDIFF 12
14 RGND
13 VSEN
channel balancing, load sharing, protection, and load-line
droop.
GND
Bias and reference ground for the IC.
OVP
Over-voltage protection pin. This pin is pulled to VCC and is
latched when an over-voltage condition is detected. Connect
this pin to the gate of an SCR or MOSFET tied across V IN
and ground. A fuse must be placed upstream to open the
input supply rail and prevent damage to the load device.
VID4, VID3, VID2, VID1, VID0
The state of these five inputs program the internal DAC,
which provides the reference voltage for output regulation.
Connect these pins to either open-drain or active pull-up
type outputs. Pulling these pins above 2.9V can cause a
reference offset inaccuracy.
OFS
Connecting a resistor between this pin and ground creates a
positive offset voltage which is added to the DAC voltage,
allowing easy implementation of load-line regulation. For no
offset, simply tie this pin to ground.
FB and COMP
The internal error amplifier inverting input and output
respectively. Connect the external R-C feedback
compensation network of the regulator to these pins.
IOUT
The current carried out of this pin is proportional to output
current and can be used to incorporate output voltage droop
and/or load sharing. The scale factor is set by the ratio of the
ISEN resistors and the lower MOSFET r DS(ON) . If droop is
desired, connect this pin to FB. When not used for droop or
load sharing, simply leave this pin open.
VSEN, RGND, VDIFF
VSEN and RGND are the inputs to the differential remote-
sense amplifier. Connect these pins to the sense points of
the remote load. Connect an appropriately sized feedback
resistor, R FB , between VDIFF and FB.
7
PWM1, PWM2
Pulse-width modulating outputs. Connect these pins to the
individual HIP660x driver PWM input pins. These logic
outputs command the driver IC(s) in switching the half-
bridge configuration of MOSFETs.
PGOOD
Power good is an open-drain logic output that changes to a
logic low when the voltage at VDIFF is 350mV below the VID
setting or above 2.2V.
FS/DIS
A dual function pin for setting the switching frequency and
disabling the controller. Place a resistor from this pin to
ground to set the switching frequency between 25kHz and
1MHz. Pulling this pin below 0.8V disables the controller.
EN
Threshold sensitive enable input of the controller. Transition
this pin above 1.23V (typical enable threshold) to initiate a
soft-start cycle. Pull this pin below 1.14V, taking into account
the enable hysteresis, to disable the controller once in
operation. Connect a resistor divider to this pin to set the
power-on voltage level for proper coordination with Intersil
MOSFET drivers. If this function is not required, simply tie
this pin to VCC.
Multi-Phase Control
Microprocessor load current profiles have increased to the
point where the multi-phase power conversion advantage is
pronounced. The technical challenges associated with
producing a single-phase converter which is both cost-
effective and thermally viable have forced a change to the
cost-saving approach of multi-phase. The ISL6569A
controller helps reduce the complexity of implementation by
integrating vital functions and requiring minimal output
components. The block diagram in Figure 1 provides a top
level view of multi-phase power conversion using the
ISL6569A controller.
FN9092.2
December 29, 2004
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6569ACBZ | 功能描述:IC REG CTRLR BUCK PWM 24-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
| ISL6569ACBZ-T | 功能描述:IC REG CTRLR BUCK PWM 24-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
| ISL6569ACR | 功能描述:IC REG CTRLR BUCK PWM 32-QFN RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 产品目录页面:1316 (CN2011-ZH PDF) |
| ISL6569ACR-T | 功能描述:IC REG CTRLR BUCK PWM 32-QFN RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 产品目录页面:1316 (CN2011-ZH PDF) |
| ISL6569ACRZ | 功能描述:IC REG CTRLR BUCK PWM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
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