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MP9929 7-18V, 100kHz Synchronous Step-Down Controller QFN-26
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pMPS MP9929 — synchronous step-down controller, 7-18V input, 100 kHz, QFN-26./p
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MP9929 7-18V, 100kHz Synchronous Step-Down Controller QFN-26
MPS MP9929 is a synchronous step-down controller that accepts 7 V to 18 V input, switches at 100 kHz, supplied in a QFN-26 package.
Key Specifications
| Part Number | MP9929 |
| Input Voltage | 7 V to 18 V |
| Switching Frequency | 100 kHz |
| Topology | Synchronous Step-Down Controller |
| Package | QFN-26 |
| Ordering Codes | MP9929 |
Features
- Up to 100V of Input Voltage (VIN)
- 7V to 18V VDRV Voltage (VDRV) Range
- Dual N-Channel MOSFET Driver
- Low-Dropout (LDO) Operation: Maximum Duty Cycle at 99.5%
- Configurable Frequency Range: 100kHz to 1000kHz
- 180° Out-of-Phase SYNCO
- External Soft Start (SS) and PG Pin
- Selectable Cycle-by-Cycle Current Limit
- Output Over-Voltage Protection (OVP)
- Configurable Continuous Conduction Mode (CCM), Advanced Asynchronous Modulation (AAM) Mode, and Pulse-Skip Mode (PSM)
Applications
- Power Delivery (PD) Power Supply in Power over Ethernet (PoE) Systems
- USB Dedicated Charging Ports (DCPs)
- Energy Storage Systems (ESS)
- Industrial Control Systems
Design Notes
- The step-down topology needs an inductor and output capacitor sized for the ripple at the switching frequency, not just the DC load.
- Keep the input loop short — high di/dt at the switch node sets conducted EMI.
- Package QFN-26 — check the land pattern in the datasheet before layout.
Common Questions
What switching frequency does the MP9929 run at?
100 kHz.
Which package is the MP9929 available in?
QFN-26, with ordering codes MP9929GQW-Z.
Shenzhen Gaorunxin Technology Co., Ltd
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