DATASHEET
ISL2110, ISL2111
FN6295
Rev.7.00
100V, 3A/4A Peak, High Frequency Half-Bridge Drivers
Mar 16, 2017
The ISL2110, ISL2111 are 100V, high frequency, half-bridge
Features
N-Channel power MOSFET driver ICs. They are based on the
Drives N-Channel MOSFET half-bridge
popular HIP2100, HIP2101 half-bridge drivers, but offer
several performance improvements. Peak output
SOIC, DFN, and TDFN package options
pull-up/pull-down current has been increased to 3A/4A, which
SOIC, DFN, and TDFN packages compliant with 100V
significantly reduces switching power losses and eliminates
conductor spacing guidelines per IPC-2221
the need for external totem-pole buffers in many applications.
Pb-free (RoHS compliant)
Also, the low end of the V operational supply range has
DD
been extended to 8VDC. The ISL2110 has additional input
Bootstrap supply max voltage to 114VDC
hysteresis for superior operation in noisy environments and the
On-chip 1W bootstrap diode
inputs of the ISL2111, like those of the ISL2110, can now
safely swing to the V supply rail. Fast propagation times for multi-MHz circuits
DD
Drives 1nF load with typical rise/fall times of 9ns/7.5ns
Related Literature
CMOS compatible input thresholds (ISL2110)
For a full list of related documents, visit our website
3.3V/TTL compatible input thresholds (ISL2111)
- ISL2110, ISL2111 product pages
Independent inputs provide flexibility
Applications
No start-up problems
Telecom half-bridge DC/DC converters
Outputs unaffected by supply glitches, HS ringing below
ground or HS slewing at high dv/dt
Telecom full-bridge DC/DC converters
Low power consumption
Two-switch forward converters
Wide supply voltage range (8V to 14V)
Active-clamp forward converters
Supply undervoltage protection
Class-D audio amplifiers
1.6W/1W typical output pull-up/pull-down resistance
+12V
+100V
SECONDARY
V
DD
CIRCUIT
HB
HI DRIVE HO
HI
HS
PWM
CONTROLLER
DRIVE LO
LI
LO
ISL2110
REFERENCE
ISL2111
AND
ISOLATION
V
SS
FIGURE 1. APPLICATION BLOCK DIAGRAM
FN6295 Rev.7.00 Page 1 of 15
Mar 16, 2017
CONTROLISL2110, ISL2111
Functional Block Diagram
HB
V
DD UNDER
HO
LEVEL SHIFT
VOLTAGE
DRIVER
HS
HI
ISL2111
UNDER
VOLTAGE
LO
ISL2111
DRIVER
LI
V
SS
EPAD (DFN Package Only)
*EPAD = Exposed Pad. The EPAD is electrically isolated from all other pins. For best
thermal performance, connect the EPAD to the PCB power ground plane.
FIGURE 2. FUNCTIONAL BLOCK DIAGRAM
FN6295 Rev.7.00 Page 2 of 15
Mar 16, 2017