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STR-W6700

Sanken
Part Number STR-W6700
Manufacturer Sanken
Description (STR-W6700 Series) Quasi-Resonant Switching Regulators
Published Apr 3, 2014
Detailed Description Product Information STR-W6700 Series Off-Line Quasi-Resonant Switching Regulators Introduction The Series STR-W6750 dev...
Datasheet PDF File STR-W6700 PDF File

STR-W6700
STR-W6700

Overview
Product Information STR-W6700 Series Off-Line Quasi-Resonant Switching Regulators Introduction The Series STR-W6750 devices are hybrid integrated circuits (HICs) with a built-in power MOSFET and a control IC designed for quasi-resonant type switch-mode power supplies (SMPS).
In normal operation, the HIC provides high efficiency and low EMI noise with bottom-skip quasiresonant operation during light output loads.
Low power consumption is also achieved by blocking (intermittent) oscillation during an auto-burst mode and reduced even further in a manually triggered (clamping an output voltage) standby mode.
The HIC is supplied in a seven-pin fully-molded TO-220style package with pin 2 deleted, which is suitable for downsizingand standardizing of an SMPS by reducing external componentcount and simplifying circuit design.
Features and benefits include the following: ▪ Blocking (or intermittent) oscillation operation by reducing output voltage in the standby mode.
▪ In addition to the standard quasi-resonant operation, a bottom-skip function is available for increased efficiency from light to medium load.
▪ Soft-start operation at start-up.
▪ Reduced switching noise (compared to conventional PWM hard-switching solution) with a step-drive function.
▪ Built-in avalanche-energy-guaranteed power MOSFET (to simplify surge-absorption circuit; no VDSS derating is required).
▪ Overcurrent protection (OCP), overvoltage protection (OVP), overload protection (OLP), and maximum ON-time control circuits are incorporated.
OVP and OLP go into a latched mode.
▪ Able to save SMPS design time with present designs and evaluation processes.
Contents Introduction Pin functional descriptions Operation description Transformer parameters General considerations Design considerations Package Dimensions, TO-220 Worldwide Contacts 28103.
30 Figure 1.
STR-W6700 series packages are fully molded TO-220 package types.
Pin 2 is deleted for greater isolation.
Table 1.
Product Line-up Type # STR-W6735 STR...


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