BM1051F
AC/DC用的功率因數校正轉換器＋準諧振DC/DC轉換器
BM1051F
BM1051F
AC/DC用的功率因數校正轉換器＋準諧振DC/DC轉換器
BM1051F是組合了應對高準諧振的功率因數校正（功率Factor Correction）轉換器（以下簡稱PFC部）與DC/DC轉換器（以下簡稱DC/DC部）的複合IC。DC/DC部採用準諧振方式動作，有助於實現低EMI。BM1051F內建650V耐壓啟動電路。PFC部、DC/DC部均外接開關MOSFET及電流檢測電阻，可實現自由度高的電源設計。PFC部採用峰值電流控制。利用內建AC電壓過低補償電路的乘法器、應對負載變動的電路、最大功率補償電路等各種保護電路，提供合適的應用方案。DC/DC部的準諧振方式為軟開關動作，有助於實現低EMI。內建脈衝串模式，可降低輕負載時的功耗。內建了緩啟動功能、脈衝串功能、逐週期過電流限制、過電壓保護、過負載保護等各種保護功能。與微控制器間設有通信控制用端子、外部停止端子，可提供適用於各種應用的系統方案。
Product Detail
規格:
FET
-
Controller Type
PFC + QR
Vin1(Min.)[V]
8
Vin1(Max.)[V]
24
Start Circuit [V]
650
SW frequency(Max.)[kHz]
120
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
Package Size [mm]
15x7.8 (t=2.01)
功能:
- 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)
