ISL8107

Single-Phase Pulse-Width Modulation (PWM) Controller with Wide (9V-75V) V<sub>IN</sub> Range

OVERVIEW

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 rDS(ON) sensing. This approach simplifies the implementation without deteriorating the converter efficiency.

KEY 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 rDS(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)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL8107
Basic Information
Production Status
Mass Production
iSim Model
YES
Input Voltage Min (V)
9
Input Voltage Max (V)
75
Output Voltage Min (V)
1.2
Output Voltage Max (V)
75
Output Current Max (A)
10
VBIAS (min)
9 V
VBIAS (max) (V)
75
IS (typ)
2 mA
Qualification Level
Standard
Bias Voltage Range (V)
N/A (Internal)
Can Sample
YES
Temperature Range
-40 to +85

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