Off-line Switcher. TNY264P Datasheet

TNY264P Datasheet PDF, Equivalent


Part Number

TNY264P

Description

Low Power Off-line Switcher

Manufacture

Power Integrations

Total Page 22 Pages
PDF Download
Download TNY264P Datasheet PDF


TNY264P Datasheet
This product is not recommended for new designs.
TNY263-268
TinySwitch-II Family
Enhanced, Energy Efficient, Low Power
Off-line Switcher
Product Highlights
TinySwitch-II Features Reduce System Cost
Fully integrated auto-restart for short circuit and open loop fault
protection – saves external component costs
Built-in circuitry practically eliminates audible noise with ordinary
dip-varnished transformer
Programmable line undervoltage detect feature prevents power
on/off glitches – saves external components
Frequency jittering dramatically reduces EMI (~10 dB)
– minimizes EMI filter component costs
132 kHz operation reduces transformer size – allows use of
EF12.6 or EE13 cores for low cost and small size
Very tight tolerances and negligible temperature variation on key
parameters eases design and lowers cost
Lowest component count switcher solution
Expanded scalable device family for low system cost
Better Cost/Performance over RCC & Linears
Lower system cost than RCC, discrete PWM and other
integrated/hybrid solutions
Cost effective replacement for bulky regulated linears
Simple ON/OFF control – no loop compensation needed
No bias winding – simpler, lower cost transformer
Simple design practically eliminates rework in manufacturing
EcoSmart– Extremely Energy Efficient
No load consumption <50 mW with bias winding and
<250 mW without bias winding at 265 VAC input
Meets California Energy Commission (CEC), Energy Star, and
EU requirements
Ideal for cell-phone charger and PC standby applications
High Performance at Low Cost
High voltage powered – ideal for charger applications
High bandwidth provides fast turn on with no overshoot
Current limit operation rejects line frequency ripple
Built-in current limit and thermal protection improves safety
Description
TinySwitch™-II integrates a 700 V power MOSFET, oscillator,
high voltage switched current source, current limit and thermal
shutdown circuitry onto a monolithic device. The start-up and
operating power are derived directly from the voltage on the
DRAIN pin, eliminating the need for a bias winding and associated
circuitry. In addition, the TinySwitch-II devices incorporate
auto-restart, line undervoltage sense, and frequency jittering. An
innovative design minimizes audio frequency components in the
simple ON/OFF control scheme to practically eliminate audible
noise with standard taped/varnished transformer construction.
+
Optional
UV Resistor
Wide-Range
High-Voltage
DC Input
D
TinySwitch-II
S
EN/UV
BP
-
Figure 1. Typical Standby Application.
+
DC
Output
-
PI-2684-061815
Output Power Table
Product3
230 VAC ± 15%
Adapter1
Open
Frame2
TNY263 P/G
TNY264 P/G
TNY265 P/G
TNY266 P/G
TNY267 P/G
5W
5.5 W
8.5 W
10 W
13 W
7.5 W
9W
11 W
15 W
19 W
TNY268 P/G
16 W
23 W
85-265 VAC
Adapter1
Open
Frame2
3.7 W
4.7 W
4W 6W
5.5 W
7.5 W
6 W 9.5 W
8 W 12 W
10 W
15 W
Table 1. Output Power Table.
Notes:
1. Minimum continuous power in a typical non-ventilated enclosed adapter
measured at 50 °C ambient.
2. Minimum practical continuous power in an open frame design with adequate
heat sinking, measured at 50 °C ambient (See Key Applications
Considerations).
3. Packages: P: DIP-8B, G: SMD-8B. Please see Part Ordering Information.
The fully integrated auto-restart circuit safely limits output power
during fault conditions such as output short circuit or open loop,
reducing component count and secondary feedback circuitry
cost. An optional line sense resistor externally programs a line
undervoltage threshold, which eliminates power down glitches
caused by the slow discharge of input storage capacitors present
in applications such as standby supplies. The operating
frequency of 132 kHz is jittered to significantly reduce both the
quasi-peak and average EMI, minimizing filtering cost.
www.power.com
This Product is Covered by Patents and/or Pending Patent Applications.
August 2016

TNY264P Datasheet
TNY263-268
BYPASS
(BP)
240 µA
50 µA
LINE UNDERVOLTAGE
AUTO-
RESTART
COUNTER
FAULT
PRESENT
6.3 V
RESET
ENABLE
1.0 V + VT
ENABLE/
UNDER-
VOLTAGE
(EN/UV)
1.0 V
JITTER
CLOCK
DCMAX
OSCILLATOR
REGULATOR
5.8 V
DRAIN
(D)
+
CURRENT
LIMIT STATE
MACHINE
-
5.8 V
4.8 V
BYPASS PIN
UNDERVOLTAGE
VILIMIT
CURRENT LIMIT
COMPARATOR
-
+
THERMAL
SHUTDOWN
SQ
RQ
LEADING
EDGE
BLANKING
Figure 2. Functional Block Diagram.
Pin Functional Description
DRAIN (D) Pin:
Power MOSFET drain connection. Provides internal operating
current for both start-up and steady-state operation.
BYPASS (BP) Pin:
Connection point for a 0.1 µF external bypass capacitor for the
internally generated 5.8 V supply.
ENABLE/UNDERVOLTAGE (EN/UV) Pin:
This pin has dual functions: enable input and line undervoltage
sense. During normal operation, switching of the power
MOSFET is controlled by this pin. MOSFET switching is
terminated when a current greater than 240 µA is drawn from
this pin. This pin also senses line undervoltage conditions
through an external resistor connected to the DC line voltage.
If there is no external resistor connected to this pin,
TinySwitch-II detects its absence and disables the line
undervoltage function.
SOURCE (S) Pin:
Control circuit common, internally connected to output
MOSFET source.
SOURCE
(S)
PI-2643-031715
P Package (DIP-8B)
G Package (SMD-8B)
BP 1
S2
S3
EN/UV 4
8 S (HV RTN)
7 S (HV RTN)
5D
PI-2685-031715
Figure 3. Pin Configuration.
SOURCE (HV RTN) Pin:
Output MOSFET source connection for high voltage return.
2
Rev. J 08/16
www.power.com


Features Datasheet pdf This product is not recommended for new designs. TNY263-268 TinySwitch-II Famil y Enhanced, Energy Efficient, Low Power Off-line Switcher Product Highlights TinySwitch-II Features Reduce System Co st • Fully integrated auto-restart f or short circuit and open loop fault pr otection – saves external component c osts • Built-in circuitry practicall y eliminates audible noise with ordinar y dip-varnished transformer • Progra mmable line undervoltage detect feature prevents power on/off glitches – sav es external components • Frequency j ittering dramatically reduces EMI (~10 dB) – minimizes EMI filter component costs • 132 kHz operation reduces tr ansformer size – allows use of EF12.6 or EE13 cores for low cost and small s ize • Very tight tolerances and negl igible temperature variation on key par ameters eases design and lowers cost Lowest component count switcher solu tion • Expanded scalable device fami ly for low system cost Better Cost/Performance over RCC & Linea.
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