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UC1525A /1527A系列脈沖寬度調(diào)制器集成電路設(shè)計用于設(shè)計所有類型的開關(guān)電源時提高性能并減少外部元件數(shù)量。片內(nèi)5.1V基準(zhǔn)電壓調(diào)整為1%,誤差放大器的輸入共模范圍包括基準(zhǔn)電壓,省去了外部電阻。振蕩器的同步輸出允許多個單元從屬或單個單元與外部系統(tǒng)時鐘同步。 C T 和放電終端之間的單個電阻提供大范圍的死區(qū)時間調(diào)整。這些器件還具有內(nèi)置insoft-start電路,僅需外部定時電容。關(guān)斷端子控制軟啟動電路和輸出級,通過脈沖關(guān)斷的PWM鎖存器提供瞬時關(guān)斷,以及使用更長的關(guān)斷命令進(jìn)行軟啟動再循環(huán)。
所有商標(biāo)均為其各自所有者的財產(chǎn)。
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Topology |
Control Method |
Vin (Min) (V) |
Vin (Max) (V) |
Frequency (Max) (kHz) |
UVLO Thresholds On/Off (V) |
Duty Cycle (Max) (%) |
Gate Drive (Typ) (A) |
Features |
Rating |
Operating Temperature Range (C) |
Pin/Package |
? |
UC2525A | UC2524 | UC2524A | UC2525B | UC2526A |
---|---|---|---|---|
Boost Buck Flyback Forward Full-Bridge Half-Bridge Push-Pull ? ? | Boost Flyback Forward Full-Bridge Half-Bridge Push-Pull ? ? | Boost Flyback Forward Full-Bridge Half-Bridge Push-Pull ? ? | Boost Buck Flyback Forward Half-Bridge Push-Pull ? ? | Boost Buck Flyback Forward Full-Bridge Half-Bridge Push-Pull ? ? |
Voltage ? ? | Voltage ? ? | Voltage ? ? | Voltage ? ? | Voltage ? ? |
7 ? ? | 7.5 ? ? | 7.5 ? ? | 7 ? ? | 7 ? ? |
40 ? ? | 40 ? ? | 40 ? ? | 40 ? ? | 40 ? ? |
500 ? ? | 450 ? ? | 450 ? ? | 500 ? ? | 600 ? ? |
7.0/6.5 ? ? | 7.5/7 ? ? | 7.5/7 ? ? | 7.0/6.5 ? ? | 7/6.8 ? ? |
49 ? ? | 90 ? ? | 50 ? ? | 49 ? ? | 50 ? ? |
0.4 ? ? | 0.1 ? ? | 0.2 ? ? | 0.5 ? ? | 0.2 ? ? |
Adjustable Switching Frequency Current Limiting Dead Time Control Error Amplifier Multi-topology Soft Start Synchronization Pin ? ? | Adjustable Switching Frequency Error Amplifier Multi-topology Soft Start Synchronization Pin ? ? | Adjustable Switching Frequency Error Amplifier Multi-topology Soft Start Synchronization Pin ? ? | Adjustable Switching Frequency Current Limiting Dead Time Control Error Amplifier Multi-topology Soft Start Synchronization Pin ? ? | Adjustable Switching Frequency Dead Time Control Error Amplifier Multi-topology Soft Start Synchronization Pin ? ? |
Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? | Catalog ? ? |
-25 to 85 ? ? | -25 to 85 ? ? | -40 to 85 ? ? | -40 to 85 ? ? | -25 to 85 ? ? |
16PDIP 16SOIC ? ? | 16SOIC ? ? | 16PDIP 16SOIC ? ? | 16SOIC ? ? | 18PDIP 18SOIC ? ? |
無樣片 | 無樣片 |