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數(shù)據(jù): LM25037/-Q1 Dual-Mode PWM Controller With Alternating Outputs 數(shù)據(jù)表
LM25037 PWM控制器包含實(shí)現(xiàn)平衡雙端功率轉(zhuǎn)換器拓?fù)渌璧乃泄δ?,例如推挽式,半橋式和全橋式。與常見的單端拓?fù)浣Y(jié)構(gòu)(如反激式和前向式)相比,這些雙端拓?fù)浣Y(jié)構(gòu)可實(shí)現(xiàn)更高的效率和更高的功率密度。 LM25037可配置為電壓模式或電流模式控制,并且外部元件最少。提供兩個交替的柵極驅(qū)動輸出,每個輸出都具有1.2A的峰值輸出電流。 LM25037可配置為在5.5 V至75 V的超寬范圍內(nèi)直接通過輸入電壓軌工作。其他功能包括可編程最大占空比限制,線路欠壓鎖定,逐周期電流限制和打嗝模式具有可調(diào)超時延遲,軟啟動和具有同步功能,精密基準(zhǔn)和熱關(guān)斷功能的2 MHz振蕩器的故障保護(hù)。
| ? |
|---|
| 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 |
| ? |
| LM25037-Q1 | UC2856-Q1 | UCC2808A-1Q1 | UCC2808A-2Q1 | UCC28220-Q1 |
|---|---|---|---|---|
| Full-Bridge Half-Bridge Push-Pull ? ? | Boost Flyback Forward Full-Bridge Half-Bridge Push-Pull ? ? | Push-Pull ? ? | Push-Pull ? ? | Flyback Forward ? ? |
| Current Feedforward Voltage ? ? | Current ? ? | Current ? ? | Current ? ? | Current ? ? |
| 5.5 ? ? | 8 ? ? | 8.3 ? ? | 4.1 ? ? | 10.5 ? ? |
| 75 ? ? | 40 ? ? | 15 ? ? | 15 ? ? | 14 ? ? |
| 2000 ? ? | 1000 ? ? | 1000 ? ? | 1000 ? ? | 2000 ? ? |
| Programmable/1.25V ? ? | 7.7/7 ? ? | 12.5/8.3 ? ? | 4.3/4.1 ? ? | 10.5/8.4 ? ? |
| 96 ? ? | 50 ? ? | 50 ? ? | 50 ? ? | 90 ? ? |
| 1.2 ? ? | 1.5 ? ? | 1 ? ? | 1 ? ? | 0.01 ? ? |
| Adjustable Switching Frequency Current Limiting HV Start-up Multi-topology Programmable Max Duty Cycle Programmable Soft Start Synchronization Pin ? ? | Error Amplifier Multi-topology Soft Start Synchronization Pin ? ? | Soft Start ? ? | Soft Start ? ? | Adjustable Switching Frequency Current Limiting Input Line Monitor Multi-topology Programmable Max Duty Cycle Programmable Slope Compensation Soft Start ? ? |
| Automotive ? ? | Automotive ? ? | Automotive ? ? | Automotive ? ? | Automotive ? ? |
| -40 to 125 ? ? | -40 to 125 ? ? | -40 to 125 ? ? | -40 to 125 ? ? | -40 to 125 ? ? |
| 16TSSOP ? ? | 16SOIC ? ? | 8SOIC ? ? | 8SOIC ? ? | 16SOIC 16TSSOP ? ? |