max5074aup Maxim Integrated Products, Inc., max5074aup Datasheet
max5074aup
Related parts for max5074aup
max5074aup Summary of contents
Page 1
... Indefinite Short-Circuit Protection With Programmable Fault Integration ♦ Integrated Look-Ahead Signal for Secondary-Side Synchronous Rectification ♦ >90% Efficiency with Synchronous Rectification ♦ 500kHz Switching Frequency Applications ♦ High-Power (1.74W), Small-Footprint 20-Pin Thermally Enhanced TSSOP Package PART MAX5074AUP *EP = Exposed pad. 20 INBIAS 19 HVIN 18 UVLO 17 BST ...
Page 2
Power IC with Integrated MOSFETs for Isolated IEEE 802.3af PD and Telecom Power-Supply Applications ABSOLUTE MAXIMUM RATINGS HVIN, INBIAS, DRNH, XFRMRH, XFRMRL to GND.................................................-0.3V to +80V BST to GND ............................................................-0.3V to +95V BST to XFRMRH .....................................................-0.3V to +12V PGND to ...
Page 3
Power IC with Integrated MOSFETs for Isolated IEEE 802.3af PD and Telecom Power-Supply Applications ELECTRICAL CHARACTERISTICS (continued 12V 1µ 2.2µF, R HVIN INBIAS REGOUT -40°C to +125°C, unless otherwise noted. ...
Page 4
Power IC with Integrated MOSFETs for Isolated IEEE 802.3af PD and Telecom Power-Supply Applications ELECTRICAL CHARACTERISTICS (continued 12V 1µ 2.2µF, R HVIN INBIAS REGOUT -40°C to +125°C, unless otherwise noted. ...
Page 5
Power IC with Integrated MOSFETs for Isolated IEEE 802.3af PD and Telecom Power-Supply Applications (V = 48V 15V, C HVIN INBIAS INBIAS 3V -40°C to +125°C, unless otherwise noted. Typical ...
Page 6
Power IC with Integrated MOSFETs for Isolated IEEE 802.3af PD and Telecom Power-Supply Applications (V = 48V 15V 1µF, C HVIN INBIAS INBIAS 3V -40°C to +125°C, unless ...
Page 7
Power IC with Integrated MOSFETs for Isolated IEEE 802.3af PD and Telecom Power-Supply Applications PIN NAME Regulator Output. Always present as long as HVIN is powered with a voltage above UVLO threshold. 1 REGOUT Bypass REGOUT to GND with a ...
Page 8
Power IC with Integrated MOSFETs for Isolated IEEE 802.3af PD and Telecom Power-Supply Applications Detailed Description The MAX5074 PWM power IC is the primary-side controller for voltage-mode, isolated forward or flyback power converters. This device provides a high degree of ...
Page 9
Power IC with Integrated MOSFETs for Isolated IEEE 802.3af PD and Telecom Power-Supply Applications The two-switch forward converter topology offers out- standing robustness against faults and transformer saturation while affording efficient use of the integrated 0.4Ω power MOSFETs. Voltage-mode control ...
Page 10
Power IC with Integrated MOSFETs for Isolated IEEE 802.3af PD and Telecom Power-Supply Applications Maximize the signal-to-noise ratio by setting the ramp peak as high as possible. Calculate the low-frequency, small-signal gain of the power stage (the gain from the ...
Page 11
Power IC with Integrated MOSFETs for Isolated IEEE 802.3af PD and Telecom Power-Supply Applications Figure 3. Typical Application Circuit (48V Power Supply, Evaluation Kit Available) ______________________________________________________________________________________ 11 ...
Page 12
Power IC with Integrated MOSFETs for Isolated IEEE 802.3af PD and Telecom Power-Supply Applications Figure 4. For lower power applications, the MAX5074 can be used in a flyback converter configuration. This eliminates the need for an output inductor and simplifies ...
Page 13
Power IC with Integrated MOSFETs for Isolated IEEE 802.3af PD and Telecom Power-Supply Applications (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) Maxim cannot assume ...