TOP214YAI PWM Switch Datasheet

TOP214YAI Datasheet, PDF, Equivalent


Part Number

TOP214YAI

Description

Three-terminal Off-line PWM Switch

Manufacture

Power Integrations Inc.

Total Page 16 Pages
Datasheet
Download TOP214YAI Datasheet


TOP214YAI
TOP200-4/14
TOPSwitch® Family
Three-terminal Off-line PWM Switch
®
Product Highlights
Low Cost Replacement for Discrete Switchers
• 20 to 50 fewer components - cuts cost, increases reliability
• Source-connected tab and Controlled MOSFET turn-on
reduce EMI and EMI filter costs
• Allows for a 50% smaller and lighter solution
• Cost competitive with linears above 5 W
Up to 90% Efficiency in Flyback Topology
• Built-in start-up and current limit reduce DC losses
• Low capacitance 700 V MOSFET cuts AC losses
• CMOS controller/gate driver consumes only 6 mW
• 70% maximum duty cycle minimizes conduction losses
Simplifies Design - Reduces Time to Market
• Supported by many reference design boards
• Integrated PWM Controller and 700 V MOSFET in a
industry standard three pin TO-220 package
• Only one external capacitor needed for compensation,
bypass and start-up/auto-restart functions
System Level Fault Protection Features
• Auto-restart and cycle by cycle current limiting functions
handle both primary and secondary faults
• On-chip latching thermal shutdown protects the entire
system against overload
Highly Versatile
• Implements Buck, Boost, Flyback or Forward topology
• Easily interfaces with both opto and primary feedback
• Supports continuous or discontinuous mode of operation
Description
The TOPSwitch family implements, with only three pins, all
functions necessary for an off-line switched mode control
system: high voltage N-channel power MOSFET with controlled
turn-on gate driver, voltage mode PWM controller with
integrated 100 kHz oscillator, high voltage start-up bias circuit,
bandgap derived reference, bias shunt regulator/error amplifier
for loop compensation and fault protection circuitry. Compared
to discrete MOSFET and controller or self oscillating (RCC)
switching converter solutions, a TOPSwitch integrated circuit
can reduce total cost, component count, size, weight and at the
same time increase efficiency and system reliability. These
AC
IN
DRAIN
SOURCE
CONTROL
TOPSwitch
Figure 1. Typical Application.
PI-1703-112995
TOPSwitch SELECTION GUIDE
ORDER
PART
NUMBER
OUTPUT POWER RANGE
FLYBACK
230 VAC or
110 VAC
w/Doubler
85-265
VAC
PFC/
BOOST
230/277
VAC
TOP200YAI*
0-25 W 0-12 W 0-25 W
TOP201YAI* 20-45 W 10-22 W 20-50 W
TOP202YAI* 30-60 W 15-30 W 30-75 W
TOP203YAI* 40-70 W 20-35 W 50-100 W
TOP214YAI* 50-85 W 25-42 W 60-125 W
TOP204YAI* 60-100 W 30-50 W 75-150 W
* Package Outline: Y03A
devices are intended for 100/110/230 VAC off-line Power
Supply applications in the 0 to 100 W (0 to 50 W universal)
range and 230/277 VAC off-line power factor correction (PFC)
applications in the 0 to 150 W range.
July 1996

TOP214YAI
TOP200-4/14
CONTROL
VC
ZC
SHUNT REGULATOR/
ERROR AMPLIFIER
-
+ 5.7 V
5.7 V
4.7 V
0
1
SHUTDOWN/
AUTO-RESTART
+
-
POWER-UP
RESET
EXTERNALLY
TRIGGERED
SHUTDOWN
IFB THERMAL
SHUTDOWN
INTERNAL
SUPPLY
÷8
RQ
SQ
OSCILLATOR
DMAX
CLOCK
SAW
-
+
PWM
COMPARATOR
SQ
RQ
RE
Figure 2. Functional Block Diagram.
DRAIN
+
- VILIMIT
CONTROLLED
TURN-ON
GATE
DRIVER
LEADING
EDGE
BLANKING
MINIMUM
ON-TIME
DELAY
SOURCE
PI-1746-011796
Pin Functional Description
DRAIN Pin:
Output MOSFET drain connection. Provides internal bias
current during start-up operation via an internal switched high-
voltage current source. Internal current sense point.
CONTROL Pin:
Error amplifier and feedback current input pin for duty cycle
control. Internal shunt regulator connection to provide internal
bias current during normal operation. Trigger input for latching
shutdown. It is also used as the supply bypass and auto-restart/
compensation capacitor connection point.
SOURCE Pin:
Output MOSFET source connection. Primary-side circuit
common, power return, and reference point.
DRAIN
SOURCE (TAB)
CONTROL
TO-220/3 (YO3A)
Figure 3. Pin Configuration.
PI-1065A-110194
2D
7/96


Features TOP200-4/14 TOPSwitch® Family Three-ter minal Off-line PWM Switch ® Product Highlights Low Cost Replacement for Dis crete Switchers • 20 to 50 fewer comp onents - cuts cost, increases reliabili ty • Source-connected tab and Control led MOSFET turn-on reduce EMI and EMI f ilter costs • Allows for a 50% smalle r and lighter solution • Cost competi tive with linears above 5 W Up to 90% E fficiency in Flyback Topology • Built -in start-up and current limit reduce D C losses • Low capacitance 700 V MOSF ET cuts AC losses • CMOS controller/g ate driver consumes only 6 mW • 70% m aximum duty cycle minimizes conduction losses Simplifies Design - Reduces Time to Market • Supported by many refere nce design boards • Integrated PWM Co ntroller and 700 V MOSFET in a industry standard three pin TO-220 package • Only one external capacitor needed for compensation, bypass and start-up/auto- restart functions System Level Fault Pr otection Features • Auto-restart and cycle by cycle current l.
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