TNY263_04 POWERINT [Power Integrations, Inc.], TNY263_04 Datasheet - Page 10

• Manufacturer Part Number: TNY263_04
• Description: Enhanced, Energy Efficient, Low Power Off-line Switcher
• Manufacturer: POWERINT [Power Integrations, Inc.]

*Not available.
Table 2. Comparison Between TinySwitch and TinySwitch-II.
Key Application Considerations
TinySwitch-II vs. TinySwitch
Table 2 compares the features and performance differences
between the TNY254 device of the TinySwitch family with the
TinySwitch-II family of devices. Many of the new features
eliminate the need for or reduce the cost of circuit components.
Other features simplify the design and enhance performance.
Function
Switching Frequency
and Tolerance
Temperature Variation
(0 - 100 °C)**
Active Frequency Jitter
Transformer
Audible Noise
Reduction
Line UV Detect
Current Limit Tolerance
Temperature Variation
(0 - 100 °C)**
Auto-Restart
BYPASS Pin
Zener Clamp
DRAIN Creepage at
Package
10
TNY263-268
E
4/04
** See typical performance curves.
44 kHz ±10% (@25 °C)
+8%
N/A*
N/A*
N/A*
± 11% (@25 °C)
-8%
N/A*
N/A*
0.037” / 0.94 mm
TinySwitch
TNY254
132 kHz ±6% (@25 °C) • Smaller transformer for low cost
+2%
±4 kHz
controller
programmable
± 7% (@25 °C)
0%
6% effective on-time
6.3 V
0.137” / 3.48 mm
Yes - built into
Single resistor
Internally clamped to
TinySwitch-II
TNY263-268
Design
Output Power
Table 1 (front page) shows the practical maximum continuous
output power levels that can be obtained under the following
conditions:
1. The minimum DC input voltage is 90 V or higher for
85 VAC input, or 240 V or higher for 230 VAC input or
115 VAC input with a voltage doubler. This corresponds to
a filter capacitor of 3 µF/W for universal input and 1 µF/W
for 230 VAC or 115 VAC with doubler input.
• Ease of design
• Manufacturability
• Optimum design for lower cost
• Lower EMI minimizing filter
• Increases power capability and
• Limits output short-circuit current to
• Protects load in open loop fault
• Greater immunity to arcing as a
• Practically eliminates audible noise
• Prevents power on/off glitches
• Allows TinySwitch-II to be powered
or gluing required
TinySwitch-II Advantages
component costs
with ordinary dip varnished
transformer – no special construction
simplifies design for high volume
manufacturing
less than full load current
- No output diode size penalty.
conditions
- No additional components
from a low voltage bias winding to
improve efficiency and to reduce
on-chip power dissipation
result of dust, debris or other
contaminants build-up
required