参数资料
| 型号： | ISL1801IVZ |
| 厂商： | Intersil |
| 文件页数： | 15/29页 |
| 文件大小： | 0K |
| 描述： | IC CONV SOLAR PWR 48TSSOP |
| 标准包装： | 390 |
| 应用： | 转换器，太阳能 |
| 输入电压： | 9 V ~ 90 V |
| 输出数： | 4 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-TFSOP（0.240"，6.10mm 宽） |
| 供应商设备封装： | 48-TSSOP |
| 包装： | 管件 |
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ISL1801
Summary of Operation
The ISL1801 is a versatile Solar Power Management IC (sPMIC).
It has two switching regulators, two LDOs, two general purpose
comparators, two power MOSFET drivers, a current sense OPAMP
and other logic functions. Figure 17 shows the main blocks in the
ISL1801.
The high voltage LDO1 can be directly connected to a high
voltage input power source up to 90V. Its output can be used to
start up the high voltage switching regulator VR1. Once VR1’s
output is greater than 6.7V, LDO1 is disabled to save power. The
second low voltage regulator, LDO2, can be connected to the
output of VR1 to generate the 5V supply required for the internal
control circuits including those that operate VR1 and VR2.
The first switching regulator, VR1, can be directly connected to an
input voltage up to 90V. VR1 provides a regulated voltage for the
second switching regulator, VR2, and the two integrated MOSFET
drivers. The low voltage switching regulator, VR2, can be used to
generate the regulated voltage for an MCU or other external
circuitry. The PGOOD2 signal is used to indicate that VR2 output
voltage is within the regulation window. The output voltage of
both VR1 and VR2 can be set through resistor dividers at the FB1
and FB2 pins respectively. The switching frequencies of VR1 and
There are two low-side drivers for the external power MOSFETs.
Both drivers are powered by the PVCC3 pin, which is normally
connected to the output of VR1.
The integrated amplifier has low offset and drift so the MCU can
accurately sense the amplified module current.
Overcurrent and overvoltage conditions can be monitored by the
two general purpose high speed comparators. Any detected fault
condition can be used to trigger an MCU interrupt.
The preload function is specially designed for solar applications.
It applies a resistive load to the input power source to verify that
it is sufficient for device operation. VR2, the MCU supply, will not
be enabled until the input power source has enough power. This
function can significantly reduce the power cycling of the MCU at
system start-up and shutdown.
The ISL1801 also includes a watch-dog circuit to prevent the
software in the MCU from hanging in an unknown state. The MCU
can use the watch-dog input (WDI) pin to periodically restart the
timer. The watch-dog time out is set by a resistor to VCC5V and a
capacitor to ground, both connected to the TIMER pin. If the RC
timer expires before an MCU reset on the WDI pin the PGOOD2
pin will be pulled low to reset the MCU.
VR2 are determined by the resistors at the TON1 and TON2 pins
respectively.
PVCC3
MCU
MCU
MCU
BCMD
PWM3
WDI
ISL1801
PGOOD2
High
Speed
Driver
BDRIVER Power
MOSFET
DRIVER3 Power
MOSFET
VIN1
PV
VCC5V
+
VR1
PWM1
VCC
1
panel
TIMER
-
Vth2
Vout1
Vout
1
WatchDog,
Pre-load
control
Enable
VR2
-
+
Vth3
LDO1
VCC
1
L1
VCC1
(10V)
FB1
PRELOA
D
Enable
VR1
PVCC3
VR2
VCC5
VIN2
V
-
PWM2
Vout2
POR
LDO2
VCC5
V
L2
(3.3V)
OPAMP AND
COMPARATORS
VCC5V
PGOOD2
MCU
15
+
-
0.88*Vref2
FIGURE 17. ISL1801 SIMPLIFIED BLOCK DIAGRAM
FB2
FN8259.0
June 29, 2012
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相关代理商/技术参数 |
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|---|---|
| ISL1801IVZ-T | 功能描述:IC CONV SOLAR PWR 48TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| ISL1902 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Full-Featured, Dimmable AC Mains LED Driver with PFC |
| ISL1902FAZ | 功能描述:LED照明驱动器 Dimmable AC Mains LED Driver PFC RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| ISL1902FAZ-T | 功能描述:LED照明驱动器 Dimmable AC Mains LED Driver PFC RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| ISL1902FAZ-T7A | 功能描述:LED照明驱动器 Dimmable AC Mains LED Driver PFC RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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