aerobotics

38V, 2A synchronous step-down switching regulator evaluation board based on L6986H

STEVAL-ISA206V1

Overview

The STEVAL-ISA206V1 product evaluation board is based on the L6986H synchronous step-down switching regulator that can deliver up to 2 A and withstand cold cranking across 100% duty cycle, which, along with its wide input operating voltage range, render the L6986H the ideal choice for 12 V - 24 V industrial standard Bus.

Synchronous rectification helps to achieve higher efficiency at full load as well as application compactness, while high-frequency switching (programmable up to 2 MHz) helps to cut on power passive costs and size while staying outside of the AM band.
The device can operate in a low consumption mode (LCM) with a quiescent current down to 30 µA at V_IN = 12 V and V_OUT = 3.3 V, hence assuring high efficiency at light loads, as required by typical car body applications that active during car parking.
A low noise mode (LNM) is also available to meet the requirements of infotainment applications of forced PWM mode in all loading conditions.
The default configuration of the board is output voltage set to 3.3 V configured in LCM, 500 kHz switching frequency, I_SKIP current set to high level and the switchover feature disabled. All of these configurations can be easily changed by the user to evaluate different application scenarios.

Main features

2 A DC output current
4 V to 38 V operating input voltage.
Low consumption mode or low noise mode
Programmable I _SKIP current
30 μA I_Q at light load (LCM V_IN = 12 V and V_OUT = 3.3 V)
8 μA I_Q-SHTDWN
Adjustable f_SW (250 kHz - 2 MHz)
Output voltage adjustable from 0.85 V to V_IN
Embedded output voltage supervisor

Synchronization (in all f_SW range)
Adjustable soft-start time
Internal current limiting
Overvoltage protection
Output voltage sequencing
Peak current mode architecture
R_DS(on)HS = 180 mΩ; R_DS(on)LS = 150 mΩ
Thermal shutdown
RoHS and WEEE compliant

Design Files

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