STEVAL-L6986IV1

批量生产
Design Win

38 V, 5 W synchronous iso-buck converter evaluation board with dual isolated output based on the L6986I

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产品概述

描述

The STEVAL-L6986IV1 evaluation board is based on L6986I 38 V, 5 W synchronous step-down switching regulator designed for isolated buck topology.

The primary output voltage can be accurately adjusted, whereas the isolated secondary output is generated by using a transformer. No optocoupler is required.

The primary sink capability (typ. 1.9 A) allows proper energy transfer to the secondary side as well as a tracked soft-start of the secondary output. The control loop is based on a peak current mode architecture and the device operates in forced PWM.

The 300 ns blanking time filters oscillations generated by the transformer leakage inductance, making the solution more robust. Pulse by pulse current sensing on both power elements implements an effective constant current protection on the primary side. Thanks to the primary reverse current limit, the secondary output is protected against short-circuit.

The secondary voltage is stabilized over current by using a power transistor and a shunt voltage reference (TL431AIL3T).

The STEVAL-L6986IV1 evaluation board generates two isolated voltages (positive around 18 V and negative between 4 and 5 V), particularly suitable for supplying the IGBT/SiC MOSFET gate driver for multiple applications. A simple by-pass enables the supply of a single isolated voltage.

  • 所有功能

    • Designed for iso-buck topology
    • 4 to 38 V operating input voltage
    • Primary output voltage regulation/no optocoupler required
    • 1.9 A typical sink peak primary current capability
    • Peak current mode architecture in forced PWM operation
    • 300 ns blanking time
    • 8 µA IQ-SHTDWN
    • Adjustable fSW and synchronization
    • Embedded primary output voltage supervisor
    • Adjustable soft-start time
    • Internal primary current limiting
    • Overvoltage protection
    • RDS(on) HS = 180 mΩ, RDS(on) LS = 150 mΩ
    • Thermal shutdown

质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 WEEE Compliant 材料声明**
STEVAL-L6986IV1
批量生产
CARD 工业 Ecopack2 Yes

STEVAL-L6986IV1

Package:

CARD

Material Declaration**:

Marketing Status

批量生产

Package

CARD

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

样片和购买

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ECCN (EU)
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STEVAL-L6986IV1 Available at distributors

经销商的可用性 STEVAL-L6986IV1

代理商名称
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代理商库存报告日期:

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L6986I
批量生产
ST EAR99 NEC ITALY Stock available

STEVAL-L6986IV1 批量生产

ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

STEVAL-L6986IV1

核心产品:

L6986I

供应商:

ST

ECCN (EU):

NEC

Country of Origin:

ITALY

Board production status:

Stock available

代理商名称

代理商库存报告日期:

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(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商