Key facts
- Brand
- Fairchild
- Model
- FSEZ1317
- Category
- Other Electronics
- Documents
- 3
- Languages
- EN
- Last added
- 2012-08-01
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FAIRCHILD RD-310 - Primary-Side-Regulation PWM with Power MOSFET FSEZ1317 handbook
RD-310 is a switch power supply reference design from Fairchild Semiconductor Corporation for mobile phone chargers. Its input voltage range is 90~265VAC, output voltage is 5V (0.7A), and rated output power is 3.5W. This design uses the main side regulation PWM control method and has the characteristics of low standby power (less than 30mW), high voltage startup, constant voltage (CV) and constant current (CC) control, frequency hopping to reduce EMI, cable voltage drop compensation, etc.
Read onlineFairchild FSEZ1317 specifications
| Low Standby Power | Under 30mW |
|---|---|
| Operating Junction Temperature | -40 to +150 °C |
| Drain-Source Voltage | 700 V |
| Turn-On Threshold Voltage | 15 to 17 V |
| Turn-Off Threshold Voltage | 4.5 to 5.5 V |
| Center Frequency | 47 to 53 kHz |
| Maximum Duty Cycle | 52 to 78 % |
| Package Type | 7-Lead, Small Outline Package (SOP-7) |
Source: Fairchild Semiconductor FSEZ1317A Primary-Side-Regulation PWM Controller Datasheet
All Fairchild FSEZ1317 documents by type
How to use the product for one specific task, with worked examples.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the recommended DC link capacitor value per watt for universal input ranges?
It is typical to select a DC link capacitor as 2-3uF per watt of input power.
At what frequency does the converter operate when the output voltage drops below 70% of its nominal value?
The frequency is reduced to 33kHz to prevent CCM operation.
What applications is the FSEZ1317A suitable for?
It is suitable for battery chargers for cellular phones, cordless phones, PDAs, digital cameras, and power tools.
From: Fairchild Semiconductor FSEZ1317A Primary-Side-Regulation PWM Controller Datasheet
Does the FSEZ1317A require secondary feedback circuitry?
No, it provides Constant-Voltage and Constant-Current control without secondary-feedback circuitry.
From: Fairchild Semiconductor FSEZ1317A Primary-Side-Regulation PWM Controller Datasheet