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OFff-line Switcher. TOP232P Datasheet

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OFff-line Switcher. TOP232P Datasheet






TOP232P Switcher. Datasheet pdf. Equivalent




TOP232P Switcher. Datasheet pdf. Equivalent





Part

TOP232P

Description

(TOP232 - TOP234) Intergrated OFff-line Switcher



Feature


TOP232-234 ® TOPSwitch-FX Family ® D esign Flexible, EcoSmart®, Integrated Off-line Switcher Product Highlights Lo wer System Cost, High Design Flexibilit y • Features eliminate or reduce cost of external components • Fully integ rated soft-start for minimum stress/ove rshoot • Externally settable accurate current limit • Wider duty cycle for more power, smaller input ca.
Manufacture

Power Integrations

Datasheet
Download TOP232P Datasheet


Power Integrations TOP232P

TOP232P; pacitor • Line under-voltage (UV) dete ction: no turn off glitches www.DataShe et4U.com • Line overvoltage (OV) shut down extends line surge limit • Line feed forward with maximum duty cycle (D CMAX) reduction rejects ripple and limi ts DCMAX at high line • Single resist or sets OV/UV thresholds, DCMAX reducti on • Frequency jittering reduces EMI and EMI filtering costs • Re.


Power Integrations TOP232P

gulates to zero load without dummy loadi ng • 132 kHz frequency reduces transf ormer/power supply size • Half freque ncy option for video applications • H ysteretic thermal shutdown for automati c recovery • Large thermal hysteresis prevents PC board overheating • Stan dard packages with omitted pins for lar ge creepage • Active-on and active-of f remote ON/OFF capability • S.


Power Integrations TOP232P

ynchronizable to a lower frequency AC IN + DC OUT - D M CONTROL TOPSwitch-FX S F C PI-2503-073099 Figure 1. Typi cal Flyback Application. OUTPUT POWER TABLE 230 VAC ±15% PART ORDER Open 1 N UMBER3 Adapter Frame2 85-265 VAC Adapte r1 Open Frame2 EcoSmart - Energy Effic ient • Cycle skipping reduces no-load consumption • Reduced consumption in remote off mode • Half.

Part

TOP232P

Description

(TOP232 - TOP234) Intergrated OFff-line Switcher



Feature


TOP232-234 ® TOPSwitch-FX Family ® D esign Flexible, EcoSmart®, Integrated Off-line Switcher Product Highlights Lo wer System Cost, High Design Flexibilit y • Features eliminate or reduce cost of external components • Fully integ rated soft-start for minimum stress/ove rshoot • Externally settable accurate current limit • Wider duty cycle for more power, smaller input ca.
Manufacture

Power Integrations

Datasheet
Download TOP232P Datasheet




 TOP232P
TOP232-234
TOPSwitch-®FX Family
Design Flexible, EcoSmart®, Integrated
Off-line Switcher
®
Product Highlights
Lower System Cost, High Design Flexibility
Features eliminate or reduce cost of external components
Fully integrated soft-start for minimum stress/overshoot
Externally settable accurate current limit
Wider duty cycle for more power, smaller input capacitor
Line under-voltage (UV) detection: no turn off glitches
www.DaLtainSeheoevte4rUv.oclotamge (OV) shutdown extends line surge limit
Line feed forward with maximum duty cycle (DCMAX)
reduction rejects ripple and limits DCMAX at high line
Single resistor sets OV/UV thresholds, DC reduction
MAX
Frequency jittering reduces EMI and EMI filtering costs
Regulates to zero load without dummy loading
132 kHz frequency reduces transformer/power supply size
Half frequency option for video applications
Hysteretic thermal shutdown for automatic recovery
Large thermal hysteresis prevents PC board overheating
Standard packages with omitted pins for large creepage
Active-on and active-off remote ON/OFF capability
Synchronizable to a lower frequency
EcoSmart® - Energy Efficient
Cycle skipping reduces no-load consumption
Reduced consumption in remote off mode
Half frequency option for high efficiency standby
Allows shutdown/wake-up via LAN/input port
Description
TOPSwitch-FX uses the proven TOPSwitch topology and cost
effectively integrates many new functions that reduce system
cost and, at the same time, improve design flexibility,
performance and energy efficiency. Like TOPSwitch, the high
voltage power MOSFET, PWM control, fault protection and
other control circuitry are all integrated onto a single CMOS
chip, but with two added terminals. The first one is a MULTI-
FUNCTION (M) pin, which implements programmable line
OV/UV shutdown and line feed forward/DCMAX reduction with
line voltage. The same pin can be used instead to externally set
an accurate current limit. In either case, this pin can also be used
for remote ON/OFF or to synchronize the oscillator to an
external, lower frequency signal. The second added terminal is
the FREQUENCY (F) pin and is available only in the Y
package. This pin provides the half frequency option when
connected to CONTROL (C) instead of SOURCE (S). The
features on the new pins can be disabled by shorting them to the
SOURCE, which allows the device to operate in a three terminal
+
AC DC
IN OUT
-
DM
TOPSwitch-FX
CONTROL
C
SF
Figure 1. Typical Flyback Application.
PI-2503-073099
OUTPUT POWER TABLE
PART
230 VAC ±15%
ORDER
NUMBER3 Adapter1
Open
Frame2
TOP232P
9W
TOP232G
15 W
TOP232Y 10 W
25 W
TOP233P
13 W
TOP233G
25 W
TOP233Y 20 W
50 W
TOP234P
16 W
TOP234G
30 W
TOP234Y 30 W
75 W
85-265 VAC
Adapter1
Open
Frame2
6.5 W 10 W
7 W 15 W
9 W 15 W
15 W
11 W
30 W
20 W
20 W
45 W
Table 1. Notes: 1. Typical continuous power in a non-ventilated
enclosed adapter measured at 50 ˚C ambient. 2. Maximum practical
continuous power in an open frame design with adequate heat sinking,
measured at 50 ˚C ambient. See key applications section for detailed
conditions. 3. Packages: P: DIP-8B, G: SMD-8B, Y: TO-220-7B.
TOPSwitch mode, but with the following new transparent
features:soft-start,cycleskipping,132 kHzswitchingfrequency,
frequency jittering, wider DCMAX, hysteretic thermal shutdown
and larger creepage. In addition, all critical parameters such as
frequency, current limit, PWM gain, etc. have tighter temperature
and absolute tolerances compared to the TOPSwitch-II family.
Higher current limit accuracy and larger DCMAX, when combined
with other features allow for a 10% to 15% higher power
capability on the TOPSwitch-FXdevices compared to equivalent
TOPSwitch-II devices for the same input/output conditions.
July 2001




 TOP232P
TOP232-234
Section List
Pin Functional Description ......................................................................................................................................... 3
TOPSwitch-FX Family Functional Description ......................................................................................................... 4
CONTROL (C) Pin Operation ................................................................................................................................. 4
Oscillator and Switching Frequency ....................................................................................................................... 5
Pulse Width Modulator and Maximum Duty Cycle ................................................................................................. 5
Minimum Duty Cycle and Cycle Skipping ............................................................................................................... 6
Error Amplifier ......................................................................................................................................................... 6
On-chip Current Limit with External Programability ................................................................................................ 6
Line Under-Voltage Detection (UV) ........................................................................................................................ 6
Line Overvoltage Shutdown (OV) ........................................................................................................................... 7
Line Feed Forward with DCMAX Reduction .............................................................................................................. 7
Remote ON/OFF and Synchronization ................................................................................................................... 7
www.DataSSohfet-eSt4taUr.ct o..m.............................................................................................................................................................. 8
Shutdown/Auto-Restart .......................................................................................................................................... 8
Hysteretic Over-Temperature Protection ................................................................................................................ 8
Bandgap Reference ................................................................................................................................................ 8
High-Voltage Bias Current Source .......................................................................................................................... 8
Using FREQUENCY and MULTI-FUNCTION Pins ..................................................................................................... 9
FREQUENCY (F) Pin Operation............................................................................................................................. 9
MULTI-FUNCTION (M) Pin Operation .................................................................................................................... 9
Typical Uses of FREQUENCY (F) Pin ...................................................................................................................... 11
Typical Uses of MULTI-FUNCTION (M) Pin ............................................................................................................. 12
Application Examples ............................................................................................................................................... 14
A High Efficiency, 30 W, Universal Input Power Supply ........................................................................................ 14
35 W Multiple Output Power Supply ..................................................................................................................... 15
17 W PC Standby Power Supply .......................................................................................................................... 16
Processor Controlled Supply Turn On/Off ............................................................................................................ 17
Key Application Considerations .............................................................................................................................. 19
TOPSwitch-FX vs. TOPSwitch-ll ........................................................................................................................... 19
TOPSwitch-FX Design Considerations ................................................................................................................. 20
TOPSwitch-FX Selection ................................................................................................................................ 20
Input Capacitor ............................................................................................................................................... 20
Primary Clamp and Output Reflected Voltage VOR ......................................................................................... 20
Output Diode .................................................................................................................................................. 21
Soft-Start ........................................................................................................................................................ 21
EMI ................................................................................................................................................................. 21
Transformer Design ........................................................................................................................................ 21
Standby Consumption .................................................................................................................................... 23
TOPSwitch-FX Layout Considerations ................................................................................................................. 23
Primary Side Connections .............................................................................................................................. 23
Y-Capacitor..................................................................................................................................................... 23
Heat Sinking ................................................................................................................................................... 23
Quick Design Checklist ......................................................................................................................................... 23
Design Tools ......................................................................................................................................................... 23
Product Specifications and Test Conditions .......................................................................................................... 24
Typical Performance Characteristics ...................................................................................................................... 30
Package Outlines ...................................................................................................................................................... 34
2B
7/01




 TOP232P
TOP232-234
CONTROL (C)
ZC
VC
SHUNT REGULATOR/
ERROR AMPLIFIER
-
+ 5.8 V
IFB
VI (LIMIT)
CURRENT
LIMIT
ADJUST
ON/OFF
VBG + VT
MULTI-
FUNCTION (M)
www.DataSheet4U.com
FREQUENCY (F)
(Y Package Only)
RE
VBG
OV/UV
LINE
SENSE DCMAX
5.8 V
4.8 V
+
-
INTERNAL UV
COMPARATOR
SOFT START
0
INTERNAL
1 SUPPLY
STOP
DCMAX
SOFT-
START
DMAX
CLOCK
HALF
FREQUENCY
SAW
OSCILLATOR WITH JITTER
÷8
SHUTDOWN/
AUTO-RESTART
HYSTERETIC
THERMAL
SHUTDOWN
-
+
PWM
COMPARATOR
SQ
RQ
DRAIN (D)
-
+
CURRENT LIMIT
COMPARATOR
CONTROLLED
TURN-ON
GATE DRIVER
LEADING
EDGE
BLANKING
Figure 2. Functional Block Diagram.
Pin Functional Description
DRAIN (D) Pin:
High voltage power MOSFET drain output. The internal start-
up bias current is drawn from this pin through a switched high-
voltage current source. Internal current limit sense point for
drain current.
CONTROL (C) Pin:
Error amplifier and feedback current input pin for duty cycle
control. Internal shunt regulator connection to provide internal
bias current during normal operation. It is also used as the
connection point for the supply bypass and auto-restart/
compensation capacitor.
MULTI-FUNCTION (M) Pin:
Input pin for OV, UV, line feed forward with DC reduction,
MAX
external set current limit, remote ON/OFF and synchronization.
A connection to SOURCE pin disables all functions on this pin
and makes TOPSwitch-FX operate in simple three terminal
mode (like TOPSwitch-II).
FREQUENCY (F) Pin: (Y package only)
Input pin for selecting switching frequency: 132 kHz if connected
to SOURCE pin and 66 kHz if connected to CONTROL pin.
SOURCE (S)
PI-2535-083099
The switching frequency is internally set for 132 kHz only
operation in P and G packages.
SOURCE (S) Pin:
Output MOSFET source connection for high voltage power
return. Primary side control circuit common and reference point.
Tab Internally
Connected to SOURCE Pin
7D
5F
4S
3M
1C
Y Package (TO-220-7B)
M1 8S
S2 7S
S3
C4 5D
P Package (DIP-8B)
G Package (SMD-8B)
Figure 3. Pin Configuration.
PI-2501-031901
3B
7/01



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