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AC/DC用的功率因数校正转换器+准谐振DC/DC转换器_BM1051F

BM1051F是组合了应对高次谐波的功率因数校正(Power Factor Correction)转换器(以下简称PFC部)与DC/DC转换器(以下简称DC/DC部)的复合LSI。DC/DC部采用准谐振方式动作,有助于实现低EMI。BM1051F内置650V耐压启动电路。PFC部、DC/DC部均外接开关MOSFET及电流检测电阻,可实现自由度高的电源设计。PFC部采用峰值电流控制。利用带AC电压过低补偿电路的乘法器、应对负载变动的电路、最大功率补偿电路等各种保护电路,提供合适的应用方案。DC/DC部的准谐振方式为软开关动作,有助于实现低EMI。内置脉冲串模式,可降低轻负载时的功耗。内置了软启动功能、脉冲串功能、逐周期过电流限制、过电压保护、过负荷保护等各种保护功能。与微控制器间设有通信控制用端子、外部停止端子,可提供适用于各种应用的系统方案。

* 本产品是标准级的产品。本产品不建议使用的车载设备。
型号 | BM1051F-GE2
Status | 供应中
封装 | SOP24
包装数量 | 2000
最小独立包装数量 | 2000
包装形态 | Taping
RoHS | Yes

特性:

FET

-

Controller Type

PFC + QR

Vin1(Min.)[V]

8.0

Vin1(Max.)[V]

24.0

Start Circuit [V]

650.0

SW frequency(Max.)[KHz]

120.0

Vcc OVP

Auto Restart / Latch

BR PIN

Yes

Channel

1

Light Load mode

Yes

EN

No

Soft Start

Yes

Under Voltage Lock Out

Yes

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

85

特点:

  • Quasi-resonant circuit + PFC circuit
  • Built-in HV Starter circuit
  • Low consumption current (typ.10µA) when starter circuit is OFF.
  • Quasi resonant circuit
    • Max operating frequency (120kHz)
    • Frequency reduction function
    • Over-current limiting variable function
    • Pulse-by-pulse over-current protection circuit
    • Built-in Soft start
    • Voltage protection function (brown out) during low input
    • ZT pin Over Voltage Protection
    • Output overload protection (auto recovery /latch switching enabled)
    • 250nsec Leading-Edge Blanking
  • Power Factor Correction circuit
    • Peak current control (65kHz)
    • Per-cycle over current protection circuit
    • Maximum power revision
    • the multiplier with a revision circuit when the AC voltage falls the load change measure circuit
  • Selectable protection method by LATCH/AUTOR terminal.
    • LATCH/AUTOR=H : Latch
    • LATCH/AUTOR=L : Auto recovery
  • External stop function (COMP pin)
  • AC input voltage stop detected function (ACDET)
  • Built-in PFC stop terminal (PFCON/OFF)