FSEZ1216_09 Datasheet, PDF (1/16 Pages) Fairchild Semiconductor – Primary-Side-Regulation PWM Integrated Power MOSFET

April 2009
FSEZ1216 — Primary-Side-Regulation PWM Integrated
Power MOSFET
Features
ƒ Constant-Voltage (CV) and Constant-Current (CC)
Control without Secondary-Feedback Circuitry
ƒ Green Mode: Frequency Reduction at Light-Load
ƒ Fixed PWM Frequency at 42kHz with Frequency
Hopping to Reduce EMI
ƒ Cable Voltage Drop Compensation in CV Mode
ƒ Low Startup Current: 10μA
ƒ Low Operating Current: 3.5mA
ƒ Peak-Current-Mode Control in CV Mode
ƒ Cycle-by-Cycle Current Limiting
ƒ VDD Over-Voltage Protection with Auto-Restart
ƒ VDD Under-Voltage Lockout (UVLO)
ƒ Gate Output Maximum Voltage Clamped at 18V
ƒ Fixed Over-Temperature Protection with Latch
ƒ DIP-8 Package Available
Applications
ƒ Battery Chargers for Cellular Phones, Cordless
Phones, PDA, Digital Cameras, Power Tools
ƒ Replaces Linear Transformer and RCC SMPS
ƒ Offline High Brightness (HB) LED Drivers
Description
The primary-side PWM integrated Power MOSFET,
FSEZ1216, significantly simplifies power supply design
that requires CV and CC regulation capabilities.
FSEZ1216 controls the output voltage and current
precisely only with the information in the primary side of
the power supply, not only removing the output current
sensing loss, but also eliminating all secondary
feedback circuitry.
The green-mode function with a low startup current
(10µA) maximizes the light load efficiency so the power
supply can meet stringent standby power regulations.
Compared with conventional secondary side regulation
approach, the FSEZ1216 can reduce total cost,
component count, size, and weight, while
simultaneously increasing efficiency, productivity, and
system reliability.
A typical output CV/CC characteristic envelope is shown
in Figure 1.
Figure 1. Typical Output V-I Characteristic
Ordering Information
Part Number
Operating
Temperature
Range
MOSFET
BVDSS
MOSFET
RDS.ON
Eco
Status
Package
Packing
Method
FSEZ1216NY -40°C to +105°C 600V
9.3Ω
(Typical)
Green 8-Lead, Dual Inline Package (DIP-8) Tube
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2009 Fairchild Semiconductor Corporation
FSEZ1216 • Rev. 1.0.1
www.fairchildsemi.com