English
Language : 

ISL1801 Datasheet, PDF (24/30 Pages) Intersil Corporation – sPMIC for Micro Converter Bias and Drivers
◁
ISL1801
Over-Temperature Protection
Over-temperature protection (OTP) is placed on the HV die.
Temperature higher than +150°C (typical) will trip the OTP disabling
VR1, VR2 and the MOSFET drivers. When the temperature
decreases to +135°C (typical), the ISL1801 will restart.
Overvoltage Protection
VR1 and VR2 include overvoltage protection (OVP):
When the VR1 output voltage feedback is higher than 120% of
VREF1, the PWM output will be tri-stated and at the same time
the PRELOAD current will be applied to VOUT1 to discharge the
output. When VOUT1 is discharged and FB1 reaches VREF1 the
OCP will turn off and normal PWM operation will resume.
When the VR2 output voltage feedback is higher than 120% of
VREF2, the PWM output will be tri-stated. After VOUT2 falls so that
FB2 is equal to VREF2 the OCP will turn off and normal PWM
operation will resume.
Applications Information
Application Circuits
PV
PANEL
VIN+
Lo
Q1
VIN-
Rs
ISEN+
GND
ISEN-
VOUT+
Inverter /
Load
VOUT-
MCU
VOUT1
VOUT2
VOUT2
ISEN+
ISEN-
VOUT2
1 NC1
NC6 48
2 NC2
PGND1 47
3 VCC1
NC5 46
4 AGND
VIN1 45
5 OCSET3
NC4 44
6 NC3
PHASE1 43
7 PHASE3
BOOT1 42
8 PGND3
TIMER 41
9 DRIVE3
TON1 40
10 PVCC3
FB1 39
11 BDRIVE
PRELOAD 38
12 PGND4
GND 37
13 PWM3
VCC5V 36
14 RPWM3
15
BCMD
ISL1801
VIN2 35
BOOT2 34
16
BRESET
PHASE2 33
17
WDI
PGND2 32
18
VDDREF
TON2 31
19
LATCHRPT
FB2 30
20
PGOOD2
CMP2+ 29
21
AMPO
CMP2- 28
22
AMP-
CMP1O 27
23
AMP+
CMP1- 26
24 SGND
CMP1+ 25
VCC5V
VIN+
VOUT1 10V
VOUT2 3.3V
FIGURE 28. BOOST REGULATOR
Submit Document Feedback 24
FN8259.1
July 24, 2014
 ▷