IC manufacturers Renesas

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Renesas ISL8115

High Voltage Synchronous Buck PWM Controller with Integrated Gate Driver and Current Sharing Capability

Overview

TopologyBuck Converter
Input voltage24-36 V
Switching frequency150-1500 kHz
Output 15 V / 20 A
IC revision1

Description

The ISL8115 is a synchronous buck PWM controller with current sharing capability. The current sharing function allows multiple modules to be connected in parallel to achieve higher output current and to reduce input and output ripple current, resulting in fewer components and reduced output dissipation. Utilizing voltage-mode control with input voltage feed-forward compensation, the ISL8115 maintains a constant loop gain foroptimal transient response, especially for applications with a wide input voltage range. The ISL8115 protects against overcurrent conditions byinhibiting the PWM operation while monitoring the current with DCR of the output inductor, or a precision resistor. It also has a pre-POR overvoltage protection option, which provides some protection to the load if the upper MOSFET(s) is shorted.The ISL8115 features remote ground sensing, programmable input voltage UVLO, output under/overvoltage protection, power-good indication, and fault Hand Shake capability.

Features

  • Wide VIN range operation: 2.97V to 36V; up to 5.5V outputand 30A load current per phase
  • Fast transient response
  • Voltage-mode PWM leading-edge modulation withnon-linear control
  • Input voltage feed-forward
  • Integrated 5V high speed 4A MOSFET gate drivers
  • Internal bootstrap diode
  • Excellent output voltage regulation
  • 0.6V ±1.0% internal reference (-40°C ~ 125°C)
  • 0.6V ±0.7% internal reference (-40°C ~ 105°C)
  • Differential voltage sensing
  • Excellent current balancing and overcurrent protection
  • Peak and average overcurrent protection
  • Output current monitor on the ISET pin
  • Oscillator programmable from 150kHz to 1.5MHz
  • Frequency synchronization to external clock signal
  • Diode emulation mode for light load efficiency improvement
  • Power-good open drain output
  • Pre-bias start-up function
  • Output OVP, UVP; OTP
  • Adjustable Soft-Start

Typical applications

  • Power supply for datacom/telecom and POL
  • High current density power supplies RF power amplifier bias
  • Wide input voltage range buck regulators

Products

Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
Material Samples
7443556260SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

8 files WE-HCI SMT Flat Wire High Current Inductor 2.6 36.8 21 50 1.58 42 WE-PERM 2
Order Code Data­sheet Simu­lation
7443556260SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Samples
Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
Material Samples