DATASHEET
ISL8107
Single-Phase Pulse-Width Modulation (PWM) Controller with Integrated High-Side
Gate Drivers
The ISL8107 is a single phase, non-synchronous buck
controller with an integrated high-side MOSFET driver. The
controller operates from 9V to 75V input voltage range. The
internal 1.192V reference voltage has a tolerance of ±1%
over the industrial temperature range.
The ISL8107 employs voltage-mode control with
feedforward compensation to provide optimal transient
response and a constant loop gain over a wide input voltage
range. The switching frequency can be programmed from
100kHz to 600kHz by external resistor and capacitor. The
switching frequency can be synchronized to an external
clock signal through the SYNC pin.
The ISL8107 features programmable soft-start, hiccup mode
for short circuit protection, and over-temperature protection.
The overcurrent protection is implemented using MOSFET’s
r
DS(ON)
sensing. This approach simplifies the implementation
without deteriorating the converter efficiency.
FN6605
Rev 1.00
October 29, 2008
Features
• Operates from +9V to +75V Bias Supply Voltage
• +1.192V Internal Voltage Reference
- ±1% tolerance Over the Industrial Temperature Range
• Programmable Switching Frequency 100kHz to 600kHz
• Simple Single-Loop Voltage Mode Control
• Voltage Feedforward Compensation
• Switching Frequency Synchronization
• Lossless, Programmable Overcurrent Protection
- Uses MOSFET’s r
DS(ON)
- Hiccup Mode
• Integrated N-Channel MOSFET Gate Drivers
• Programmable Soft-Start
• Over-Temperature Protection
• QFN (5x5) Package
- QFN Compliant to JEDEC PUB95 MO-220 QFN - Quad
Flat No Leads - Product Outline
- QFN Near Chip Scale Package Footprint; Improves
PCB Efficiency, Thinner in Profile
• Pb-Free (RoHS Compliant)
Pinout
ISL8107
(16 LD 5X5 QFN)
TOP VIEW
UGATE
14
PHASE
13
12 EN/SS
11
PGND
PVCC
16
VFF
OCSET
VCC
SYNC
1
2
3
4
5
RT/CT
6
SGND
7
FB
8
COMP
BOOT
15
Applications
• Test and Measurement Instruments
• Routers and Switchers
• Point of Load Modules
• Distributed DC/DC Power Architecture
• Industrial Applications
• Telecom/Datacom Applications
10 PGOOD
9
VBG
Ordering Information
PART
NUMBER
(Note)
ISL8107IRZ
PART
MARKING
ISL8107 IRZ
TEMP.
RANGE (°C)
-40 to +85
-40 to +85
PACKAGE
(Pb-Free)
PKG.
DWG. #
16 Ld 5x5 QFN L16.5x5B
16 Ld 5x5 QFN L16.5x5B
Tape and Reel
ISL8107IRZ-T* ISL8107 IRZ
*Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ special
Pb-free material sets, molding compounds/die attach materials, and
100% matte tin plate plus anneal (e3 termination finish, which is RoHS
compliant and compatible with both SnPb and Pb-free soldering
operations). Intersil Pb-free products are MSL classified at Pb-free peak
reflow temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
FN6605 Rev 1.00
October 29, 2008
Page 1 of 16
ISL8107
Absolute Maximum Ratings
Input Voltage (VCC,VFF) to GND . . . . . . . . . . . . . . . . . . . . . . .100V
BOOT to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105V
ENSS pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6V
FB, COMP, SYNC pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8V
Thermal Information
Thermal Resistance (Typical)
JA
(°C/W)
JC
(°C/W)
QFN Package (Notes 1, 2) . . . . . . . .
33
3
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . 9.0V to 75V
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTES:
1.
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
2. For
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
3. Limits should be considered typical and are not production tested.
Electrical Specifications
Recommended Operating Conditions, unless otherwise noted; Parameters with MIN and/or MAX limits are
100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are
not production tested.
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
PARAMETER
VCC SUPPLY
Bias Voltage Range
Bias Supply Current
VCC Shutdown Current
INTERNAL LINEAR REGULATOR (PVCC)
Output Voltage
Maximum Output Current
Short Current Protection
POWER-ON RESET
POR Threshold
POR Threshold Hysteresis
OSCILLATOR
Total Variation on Set Frequency
Frequency Range
SYNC Frequency Range
Ramp Amplitude
Min OFF Time
REFERENCE VOLTAGE
Feedback Voltage
Accuracy
ENABLE/SS
Soft-Start Current
9.0
I
VCC
I
VCC_SD
UGATE open
VCC = 48V, ENSS = 0V
-
-
-
2
40
75
3
60
V
mA
µA
PVCC
VCC = 15V to 75V, Load = 3mA to 20mA
-
20
-
10
-
60
-
-
-
V
mA
mA
VCC = VFF
VCC = VFF
6.8
-
7.8
220
8.5
-
V
mV
R
T
= 20k, C
T
= 1200pF
Set by R
T
and C
T
. R
T
range = 20k to 100k,
C
T
range = 470pF to 1200pF
above R
T
C
T
natural frequency
V
OSC
VCC varied from 9.0V to 75V
100
100
-
-
330
-
-
0.11*VFF
190
600
600
-
300
kHz
kHz
kHz
V
P-P
ns
V
FB
-
-1.0
1.192
-
-
+1.0
V
%
I
SS
VENSS = 0V
VENSS = 1.3V
-
22
0.5
2
33
0.77
-
43
1.0
µA
µA
V
Enable Threshold
V
EN
Voltage level where soft-start current
changes from low to high
FN6605 Rev 1.00
October 29, 2008
Page 5 of 16
微控制器 MCU
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
