STEVAL-ISA084V1 4 A peak, 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40
The STEVAL-ISA084V1, based on the ST1S40, is an internally compensated 800 kHz fixed-frequency PWM synchronous step-down converter demonstration board.
The ST1S40 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to VIN (100% duty-cycle).
The ST1S40 integrates 95 mΩ high side switch and 69 mΩ synchronous rectifier allowing very high efficiency with very low output voltages.
The peak current mode control with internal compensation delivers a very compact solution with a minimum component count.
The device is protected through cycle-by-cycle current limiting in case of overload and is also protected by current foldback function with frequency reduction in case of short-circuit
The device is available with an enable on/off function.
技术特性
- Vin: 4 V to 18 V
- Vout: 3.3 V
- Maximum output current: 4 A
- Switching frequency: 800 kHz
- Short-circuit: protected
- RoHS compliant
| 功能框图
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STEVAL-ISA084V1 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| STEVAL-ISA084V1 |
Active |
|
1000 |
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DATA BRIEF
| 描述 |
版本 |
大小 |
| STEVAL-ISA084V1 : DB1494: 4 A peak, 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40 |
1 |
103KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN2787: Monolithic VR demonstration board for chipset and DDR2/3 supply for ultramobile PC (UMPC) applications |
1 |
2594KB |
| AN2936: 10 W SMPS with HV power MOSFET and the L6565 for three-phase industrial applications |
1 |
303B |
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PCB LAYOUTS
