ISL8215M

15A 42V Single-Channel DC/DC Step-Down Power Module

OVERVIEW

The ISL8215M power module is a single-channel, synchronous step-down, non-isolated complete power supply, capable of delivering up to 15A of continuous current. Operating from a single 7V to 42V wide input power rail and integrating the controller, power inductor, and MOSFETs, the ISL8215M requires only a few external components to operate and is optimized for space constrained applications.
The ISL8215M is based on a valley current mode PWM control scheme and provides fast transient response and excellent loop stability. It offers an adjustable output voltage range of 0.6V to 12V with better than 1.5% accuracy over line, load, and temperature. A 40ns typical minimum on-time and an adjustable operating frequency allow it to support low duty cycle, single-step down conversions to point-of-load voltages and its operating frequency can also be synchronized with an external clock signal. The ISL8215M implements a selectable Pulse Skipping Mode (PSM) with Diode Emulation Mode (DEM) to improve light-load efficiency for battery related applications. A programmable soft-start reduces the inrush current from the input supply while a dedicated enable pin and power-good flag allow for easy system power rails sequencing with voltage tracking capability. Excellent efficiency and low thermal resistance permit full power operation without heatsinks.
Input Undervoltage Lockout (UVLO), over-temperature, programmable overcurrent, output overvoltage, and output prebias start-up protections ensure safe operations under abnormal operating conditions.
The ISL8215M is available in a compact RoHS compliant thermally-enhanced 19mm x 13mm x 5.3mm HDA package.

KEY FEATURES

    • 15A single-channel complete power supply
      • Integrates controller, MOSFETs, and inductor
    • 7V to 42V wide input voltage range
    • Adjustable output voltage
      • 0.6V to 12V wide output voltage range
      • 40ns on-time low duty cycle conversion capable
      • ±1.5% accuracy over line, load, and temperature
      • Up to 96.5% efficiency
    • 300kHz to 2MHz adjustable PWM operations
      • External synchronization up to 1MHz
      • Selectable light-load PSM/DEM efficiency mode
    • Enable pin and power-good flag
    • Programmable soft-start or voltage tracking
    • Complete protection
      • UVLO, programmable overcurrent, overvoltage, and over-temperature
      • Prebias output start-up
    • 19mm x 13mm x 5.3mm HDA package

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL8215M
Basic Information
Production Status
Mass Production
Input Voltage Min (V)
7
Input Voltage Max (V)
42
Output Voltage Min (V)
0.6
Output Voltage Max (V)
12
Output Current Max (A)
15
IQ
2.5 mA
Peak Efficiency (%)
96.5
POR
Yes
Switching Freq. (max) (MHz)
2
Switching Freq. (min) (MHz)
0.3
Control Type
Current Mode
SYNCH Capability
Yes
Current Sharing
No
Tracking
Yes
Digital
No
Qualification Level
Standard
Configuration
Load
Switching Frequency Range (MHz)
0.300 to 2
Can Sample
YES
Temperature Range
-40 to +85

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