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User Guide 020
ISL8117EVAL2Z Evaluation Board User Guide
Description
The ISL8117EVAL2Z evaluation board (shown in Figure 1)
features the ISL8117
. The ISL8117 is a 60V high voltage
synchronous buck controller that offers external soft-start,
independent enable functions and integrates UV/OV/OC/OT
protection. Its current mode control architecture and internal
compensation network keep peripheral component count
minimal. Programmable switching frequency ranging from
200kHz to 2MHz helps to optimize inductor size while the
strong gate driver delivers up to 30A for the buck output.
Specifications
The ISL8117EVAL2Z evaluation board is designed for high
current applications. The current rating of the ISL8117EVAL2Z
is limited by the FETs and inductor selected. The ISL8117 gate
driver is capable of delivering up to 20A for the buck output as
long as the proper FETs and inductor are provided. The
electrical ratings of ISL8117EVAL2Z are shown in Table 1
.
Key Features
•Wide input range: 18V to 60V
• High light-load efficiency in pulse skipping DEM operation
•Programmable soft-start
• Optional DEM/CCM operation
• Supports prebias output with SR soft-start
• External frequency sync
•PGOOD indicator
• OCP, OVP, OTP, UVP protection
• Back biased from output to improve efficiency
References
ISL8117 Datasheet
TABLE 1. ELECTRICAL RATING
PARAMETER RATING
Input Voltage 18V to 60V
Switching Frequency 300kHz
Output Voltage 12V
Output Current 20A
OCP Set Point Minimum 25A at ambient room temperature
Ordering Information
PART NUMBER DESCRIPTION
ISL8117EVAL2Z High Voltage PWM Step-down
Synchronous Buck Controller Evaluation
Board
FIGURE 1. ISL8117EVAL2Z TOP SIDE
March 17, 2015
UG020.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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