TNY178PN DIP7
TinySwitch-LT combines a high voltage power MOSFET
switch with a power supply controller in one device. Unlike
conventional PWM (pulse width modulator) controllers, it uses
a simple ON/OFF control to regulate the output voltage.
The controller consists of an oscillator, enable circuit (sense and
logic), current limit state machine, 5.85 V regulator, BYPASS/
MULTI-FUNCTION pin undervoltage, overvoltage circuit, and
current limit selection circuitry, over- temperature protection,
current limit circuit, leading edge blanking, and a 700 V power
MOSFET. TinySwitch-LT incorporates additional circuitry for
auto-restart, adaptive switching cycle on-time extension, and
frequency jitter. Figure 2 shows the functional block diagram
with the most important features.
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توضیحات
TNY178PN DIP7
Lowest System Cost with Enhanced Flexibility
- 650 V rating optimized for non-active PFC applications
- Simple ON/OFF control, no loop compensation needed
- Selectable current limit through BP/M capacitor value
– Higher current limit extends peak power or, in open
frame applications, maximum continuous power
– Lower current limit improves effi ciency in enclosed
adapters/chargers
– Allows optimum TinySwitch-LT choice by swapping
devices with no other circuit redesign
- Tight I2
f parameter tolerance reduces system cost
– Maximizes MOSFET and magnetics power delivery
– Minimizes max overload power, reducing cost of
transformer, primary clamp & secondary components
- ON-time extension – extends low line regulation range/
hold-up time to reduce input bulk capacitance
- Self-biased: no bias winding or bias components
- Frequency jittering reduces EMI fi lter costs
- Pin-out simplifi es heatsinking to the PCB
- SOURCE pins are electrically quiet for low EMI
توضیحات تکمیلی
| کیفیت |
HIGH COPY |
|---|---|
| Package |
DIP-7 |
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