STEVAL-ISA051V1 Complete DDR2/3 memory power supply controller evaluation board based on the PM6670S
This demonstration board is based on the ST1S03A, an adjustable current mode PWM step-down DC-DC converter with internal 1.5 A power switch, packaged in a 6-lead DFN 3x3 mm.
It's a complete 1.5 A switching regulator with its internal compensation eliminating additional component.
The constant frequency, current mode, PWM architecture and stable operation with ceramic capacitors results in low, predictable output ripple.
However, in order to maximize the power conversion efficiency with light load, the regulator reduces automatically the switching frequency when the output load becomes less than 250 mA typically.
技术特性
- 4.5 V to 28 V input voltage range
- 0.9 V, ±1% voltage reference
- 1.8 V (DDR2) or 1.5 V (DDR3) fixed output voltages
- 0.9 V to 2.6 V adjustable output voltage
- 1.237 V ±1% reference voltage available
- Very fast load transient response
- Constant on-time loop control
- No RSENSE current sensing using the RDS(on) of the low-side MOSFETs
- Negative current limit
- Latched OVP, UVP and thermal shutdown
- Fixed 3 ms soft-start
- Selectable pulse-skipping at light load
- Selectable no-audible (33 kHz) pulse-skip mode
- All ceramic output capacitors application supported
- Output voltage ripple compensation
| 功能框图
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STEVAL-ISA051V1 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-ISA051V1 |
Active |
|
1000 |
|
|
|
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DATA BRIEF
| 描述 |
版本 |
大小 |
| STEVAL-ISA051V1 : Complete DDR2/3 memory power supply controller evaluation board based on the PM6670S |
1 |
147KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN2093: ST1S03 buck converters for HDD power supplies |
2 |
234KB |
BILL OF MATERIALS
SCHEMATIC PACKS
PCB LAYOUTS
