Want to post a buying lead? If you are not a member yet, please select the specific/related part number first and then fill the quantity and your contact details in the "Request for Quotation Form" on the left, and then click "Send RFQ".Your buying lead can then be posted, and the reliable suppliers will quote via our online message system or other channels soon.
The FSQ0170RNA, FSQ0270RNA, FSQ0370RNA consists of an integrated current mode Pulse Width Modulator (PWM) and an avalanche-rugged 700V Sense FET. It is specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components. The integrated PWM controller features include: a fixed-frequency generating oscillator, Under-Voltage Lockout (UVLO) protection, Leading Edge Blanking (LEB), an optimized gate turn-on/ turn-off driver, Thermal Shutdown (TSD) protection, and temperature compensated precision current sources for loop compensation and fault protection circuitry. Compared to a discrete MOSFET and controller or RCC switching converter solution, the FSQ0170RNA, FSQ0270RNA, FSQ0370RNA reduces total component count, design size, and weight while increasing efficiency, productivity, and system reliability. These devices provide a basic platform that is well suited for the design of cost-effective flyback converters, as in PC auxiliary power supplies.
FSQ0370RNA Maximum Ratings
Symbol
Characteristic
Value
Unit
VDRAIN
Drain Pin Voltage
700
V
VSTR
Vstr Pin Voltage
700
V
IDM
Drain Current Pulsed(5)
FSQ0170RNA
4
A
FSQ0270RNA
8
A
FSQ0370RNA
12
A
EAS
Single Pulsed Avalanche Energy(6)
FSQ0170RNA
50
mJ
FSQ0270RNA
140
mJ
FSQ0370RNA
230
mJ
VCC
Supply Voltage
20
V
VFB
Feedback Voltage Range
-0.3 to VCC
V
PD
Total Power Dissipation
1.5
W
TJ
Operating Junction Temperature
Internally limited
°C
TA
Operating Ambient Temperature
-25 to +85
°C
TSTG
Storage Temperature
-55 to +150
°C
Notes: 5. Non-repetitive rating: Pulse width is limited by maximum junction temperature. 6. L = 51mH, starting TJ = 25°C.
FSQ0370RNA Features
· Internal Avalanche Rugged 700V SenseFET · Consumes only 0.8W at 230 VAC & 0.5W Load with Burst-Mode Operation · Precision Fixed Operating Frequency, 100kHz · Internal Start-up Circuit and Built-in Soft-Start · Pulse-by-Pulse Current Limiting and Auto-Restart Mode · Over-Voltage Protection (OVP), Overload Protection (OLP), Internal Thermal Shutdown Function (TSD) · Under-Voltage Lockout (UVLO) · Low Operating Current (3mA) · Adjustable Peak Current Limit
FSQ0370RNA Typical Application
· Auxiliary Power Supply for PC and Server · SMPS for VCR, SVR, STB, DVD & DVCD Player, Printer, Facsimile & Scanner · Adapter for Camcorder