1
100V, 2A Peak, High Frequency Half-Bridge Drivers with
Adjustable Dead Time Control and PWM Input
HIP2120, HIP2121
The HIP2120 and HIP2121 are 100V, high frequency, half-bridge
MOSFET driver ICs. They are based on the popular ISL2100A and
ISL2101A half-bridge drivers.
These drivers have a programmable dead-time to insure
break-before-make operation between the high-side and low-side
drivers. The dead-time is adjustable up to 250ns.
A single PWM logic input controls both bridge outputs (HO, LO). An
enable pin (EN), when low, drives both outputs to a low state. All
logic inputs are V
DD
tolerant and the HIP2120 has CMOS inputs
with hysteresis for superior operation in noisy environments.
The HIP2120 has hysteretic inputs with thresholds that are
proportional to V
DD
. The HIP2121 has 3.3V logic/TTL compatible
inputs.
Two package options are provided. The 10 Ld 4x4 DFN package has
standard pinouts. The 9 Ld 4x4 DFN package omits pin 2 to comply
with 100V conductor spacing per IPC-2221.
Features
• 9 Ld TDFN “B” Package Compliant with 100V Conductor
Spacing Guidelines per IPC-2221
• Break-Before-Make Dead-Time Prevents Shoot-through and is
adjustable up to 220ns
• Bootstrap Supply Max Voltage to 114VDC
• Wide Supply Voltage Range (8V to 14V)
• Supply Undervoltage Protection
• CMOS Compatible Input Thresholds with Hysteresis (HIP2120)
•1.6/1 Typical Output Pull-up/Pull-down Resistance
•On-Chip 1 Bootstrap Diode
Applications
• Telecom Half-Bridge DC/DC Converters
•UPS and Inverters
•Motor Drives
• Class-D Amplifiers
• Forward Converter with Active Clamp
Related Literature
• FN7670 “HIP2122, HIP2123 100V, 2A Peak, High Frequency
Half-Bridge Driver with Delay Timers”
FIGURE 1. TYPICAL APPLICATION FIGURE 2. DEAD-TIME vs TIMING RESISTOR
VDD HB
HO
HS
LOVSS
PWM
EN
100V max
RDT
FEEDBACK
WITH
ISOLATION
PWM
CONTROLLER
SECONDARY
CIRCUITS
HIP2120/21
EPAD
HALF BRIDGE
R
DT
(k)
8162432485640 64 80
DEAD-TIME (ns)
200
160
140
120
100
80
60
40
20
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|Copyright Intersil Americas Inc. 2011. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
December 23, 2011
FN7668.0
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