ZXGD3101 Diodes, Inc., ZXGD3101 Datasheet
ZXGD3101
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ZXGD3101 Summary of contents
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... ZXGD3101T8 Synchronous rectifier controller for flyback converters. Description The ZXGD3101 is intended to drive MOSFETS configured as ideal diode replacements. The device is comprised of a differential amplifier detector stage and high current driver. The detector monitors the reverse voltage of the MOSFET such that if body diode conduction occurs a positive voltage is applied to the MOSFET's Gate pin ...
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... Symbol SOURCE I SINK I REF V BIAS I BIAS stg Symbol R θJA R θIA 2 ZXGD3101T8 Limit Unit to180 100 mA 500 mW °C -40 to +150 °C -50 to +150 Value Unit 250 °C/W 54 ° ...
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... DRAIN V = -60mV, DRAIN V = -80mV, DRAIN -100mV, G DRAIN ≤ -140mV, V DRAIN ≤ -200mV, V DRAIN SOURCE SINK (a) († 2.2nF ZXGD3101T8 Min. Typ. Max -45 - 0.6 1 (†) 5.0 7.5 - (†) 7.0 8.5 - (†) 8 (†) 9.2 9.4 - (†) 9.3 9.5 - 2.5 - 2.5 - 525 15 305 20 www ...
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... via resistor from the synchronous MOSFET Gate. SINK , to the synchronous MOSFET Gate. SOURCE via resistor into this pin. See note 1 REF 4 ZXGD3101T8 Vcc river should be selected to source REF REF . R should be selected to ...
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... At zero current the detector output voltage is zero and the synchronous MOSFET Gate voltage is pulled low by the GATEL, turning the device off. M OSF ET D rain Voltage M OSF ET Gate Voltage M OSF ET Gate C urrent Issue 4 - January 2009 © Diodes Incorporated 2009 Body D iode 2 C onduction D rain 1 current zero ZXGD3101T8 www.zetex.com www.diodes.com ...
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... Fig 1a: Continuous Conduction Mode (CCM) Fig 1b: Critical Conduction Mode (CrCM) Fig 1c: Discontinuous Conduction Mode (DCM) Issue 4 - January 2009 © Diodes Incorporated 2009 Figure 1. Typical waveforms 6 ZXGD3101T8 www.zetex.com www.diodes.com ...
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... Typical characteristics Turn-off offset voltage Issue 4 - January 2009 © Diodes Incorporated 2009 ZXGD3101T8 Turn-off offset voltage 7 www.zetex.com www.diodes.com ...
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... Typical characteristics Turn-off offset voltage Issue 4 - January 2009 © Diodes Incorporated 2009 ZXGD3101T8 8 www.zetex.com www.diodes.com ...
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... Typical characteristics Component selection It is advisable to decouple the ZXGD3101 closely to V peak gate currents with C1 in Figure 2. The proper selection of external resistors R operation. Select a value for resistor R R must then be 0.6 times the value of R BIAS provides a recommended typical offset voltage of -20mV. ...
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... syn S D Vcc BIAS Vcc AIN GAT EL GAT Qpri 10 ZXGD3101T8 Vcc syn C snub + Out ...
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... DRAIN H 3101 GATEL GATEH GND R L Figure 4: Test circuit Body Diode Conduction Zero voltage transition NOTE: GATE H AND GATE L ARE CONNECTED Figure 5: Timing diagram 11 ZXGD3101T8 Vcc C1 1μF X7R 2200pF X7 R GND 20mV - www.zetex.com www.diodes.com ...
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... Issue 4 - January 2009 © Diodes Incorporated 2009 Inches DIM Min. Max. Typ. - 0.067 - e1 0.0008 0.004 - 0.0275 He 0.009 0.013 - Lp 0.248 0.264 - 0.130 0.145 - 12 ZXGD3101T8 Millimeters Inches Min. Max. Typ. Min. Max 4. 1.53 - 6.7 7.3 - 0.264 0.287 0 0.035 - 15° 10° - www.zetex.com www.diodes.com Typ. ...
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... Issue 4 - January 2009 © Diodes Incorporated 2009 Intentionally left blank 13 ZXGD3101T8 www.zetex.com www.diodes.com ...
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... Changning Road Hsin-Tien Shanghai, China Taipei, Taiwan Tel: (+86) 215 241 4882 Tel: (+886) 289 146 000 Fax (+86) 215 241 4891 Fax: (+886) 289 146 639 14 ZXGD3101T8 Shenzhen Korea ANLIAN Plaza, #4018 6 Floor, Changhwa B/D, Jintian Road 1005-5 Yeongtong-dong, Futian CBD, Yeongtong-gu, Suwon-si, ...