6SL3352-1AG38-8FA1

6SL3352-1AG38-8FA1

6SL3352-1AG38-8FA1

若需同时具备PFM与PWM的优点的话，可选择PWM/PFM切换控制式DC/DC变换器。此功能是在重负荷时由PWM控制，低负荷时自动切换到PFM控制，即在一款产品中同时具备PWM的优点与PFM的优点。在备有待机模式的系统中，采用PFM/PWM切换控制的产品能得到较率。

就DC-DC变换器而言目前业界PFM只有Single Phase，且以Ripple Mode的模式来实现，故需求输出端的Ripple较大。没有负向电感电流，故可提高轻载效率。

由于是看输出Ripple，所以Transient很好，在做Dynamic的时候没有under-shoot。PWM有Single Phase &Multi-phase，多以Voltage Mode or Current Mode来实现，对输出Ripple没有要求，轻载时存在电感负向电流，故轻载效率较差，Compensation较Ripple相比较慢。将PWM于PFM结合使用，当侦测到电感负电流的时候，变出现Pulse Skipping，而不再受内部Clock控制。此时，controller will turnoff both h-mos & l-mos，Coss & L会出现阻尼振荡。

6SL3352-1AG38-8FA1 

MC BASIC TX/FX SINGLE-CONVERSION MEDIA CONVERTER

TWO EACH INSTRUMENT TRANSFORMERS CURRENT TRANSFORMER RA

GENERAL ELECTRIC  RELAY 2 POLE, 10 AMP

RC SYSTEMS ST51 LOOP POWERED ISOLATOR

M-SYSTEM SIGNAL TRANSMITTER M2VS-4W4W-M/K

WESTINGHO THERMAL OVERLOAD RELAY AA13P

 OF 5 EACH CUTLER HAMMER BR250 50 AMP 2 POLE

KILLARK 3" CONDUIT BODY LB CLASS 30

Challenger 30 AMP 240 VOLT TYPE NE CIRCUIT BREAKER

FERRAZ SHAWMUTT AMPTRAP SEMICONDUCTOR F 125 AMP

CUTLER HAMMER PREWIRED LIMIT SWITCH NO/NC CONTACTS

LITTELF 1100 AMP CLASS L TIME DELAY I-LIMITING

WESTINGHO THERMAL OVERLOAD RELAY

SIEMENS BOLT IN 20 AMP 240 VOLT TYPE HBL 1 POLE HI INT

CUTLER HAMMER & OPCON PHOTOELECTRIC SENSORS 1455A-6511

ALLENAIR AIR CYLINDER APN 1 1/2 X 1 X 3 WR CS 98

SPORLAN SUCTION LINER FILTER DRIER C 437 S T HH

One Time Buss F NOS 100 600 volt Bid is for 3

LANDIS & GYR POWERS INC MULTIPURPOSE RELAY NO.243-0009

FERRAZ SHAWMUTT AMPTRAP SEMICONDUCTOR F 400 AMP

FOUR ROLLS  LEEDS & NORTHRUP SPEEDOMAX® 165 CHART PA

SIEMENS CONTACT KIT FOR SIZE 2 3TA22 CONTACTOR

CUTLER-HAMMER 2 POLE CIRCUIT BREAKER 20 AMP GHB2020

GENERAL ELECTRIC 120 VOLT STARTER COIL

SECURELEC-SOCEM 62710 CONTROL TRANSFORMER 480/120VAC

WESTINGHO THERMAL OVERLOAD RELAY

SIEMENS ENCLOSED BREAKER NEMA 1 30 AMP 240 VOLT 2 POLE

ABB IEC 5 HP STARTER WITH AUTO OVERLOAD

ABB IEC 10 HP STARTER WITH AUTO OVERLOAD

CUTLER HAMMER FREEDOM SERIES HEATERS H20143

SQAURE D DUCT WIRE WAY TEE 6X6 LD 6T

OPTO 22 AC7 ADAPTER CARD

ALLEN BRADLEY MANUAL STARTER OVERLOAD PROTECTION 0100

FEDERAL PACIFIC CIRCUIT BREAKER 50 AMP 240 VOLT TYPE NE

CUTLER HAMMER MOTOR CONTROL PANEL DISC SWITCH OPERATOR

ALKON 3 WAY HIGH SPEED CONTROL AIR VALVE 115 VOLT

 DAYBRITE HIGH BAY BALLAST 480 VOLT

SQUARE D FHP STARTER, TOGGLE, NEMA 1

LSI LIGHTRON LIGHTING WALL LIGHT 100 WATT 120 VOLT

Lithonia Lighting Exit LIghts LE S W 1 G

SPORLAN SUCTION LINER FILTER DRIER C 307 S T HH

GENERAL ELECTRIC MANUAL STARTER FRACTIONAL HP 1 HP MAX

 EIGHTEEN (18) FISHER SCIENTIFIC 8 OZ SCREW CAP BOTT

FEDERAL PACIFIC CIRCUIT BREAKER 30 AMP 240 VOLT NE

FERRAZ SHAWMUTT AMPTRAP SEMICONDUCTOR F 200 AMP

A/B IEC MANUAL STARTER WITH OVERLOAD PROTECTION

TWO  GENERAL ELECTRIC HEAVY DUTY OILTIGHT PUS

SQAURE D DUCT WIRE WAY ELBOW LD-69 OL

 AMETEK US GAUGE MODEL 1981 RANGE 0-30 PSI

VISOLUX PHOTO REFLEX SENSOR 6-1368/8/25

APOLLO 3/4" BRASS BALL GAS VALVE

 F FLSR400 600 VOLT 400 AMP LITTLEF

SQUARE D EHB14020 1 POLE 20 AMP BREAKER

CONTROL CONCEPTS ISLATROL MODEL: I-105

ALLEN BRADLEY MANUAL STARTER OVERLOAD PROTECTION 0040

Allen Bradley Oiltight Limit Switch 802T-ATH

FERRAZ SHAWMUTT AMPTRAP SEMICONDUCTOR F 125 AMP

SIEMENS BOLT IN 20 AMP 2 POLE 240 VOLT TYPE BL

BURNDY GROUND CLAMP (DIRECT BURIAL)