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UC1875-SP Fiches technique(PDF) 1 Page - Texas Instruments |
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UC1875-SP Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 36 page Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UC1875-SP SLUSAQ9B – DECEMBER 2011 – REVISED DECEMBER 2015 UC1875-SP Rad-Tolerant Class-V, Phase Shift Resonant Controller 1 Features 3 Description The UC1875-SP implements control of a bridge 1 • QML-V Qualified, SMD 5962-94555 power stage by phase-shifting the switching of one • Rad-Tolerant: 50 kRad (Si) TID (1) half-bridge with respect to the other, allowing • Zero to 100% Duty Cycle Control constant frequency pulse-width modulation in combination with resonant, zero-voltage switching for • Programmable Output Turn-On Delay high efficiency performance at high frequencies. This • Compatible with Voltage or Current Mode circuit may be configured to provide control in either Topologies voltage or current mode operation, with a separate • Practical Operation at Switching Frequencies to overcurrent shutdown for fast fault protection. 1 MHz A programmable time delay is provided to insert a • Four 2-A Totem Pole Outputs dead-time at the turn-on of each output stage. This delay, providing time to allow the resonant switching • 10-MHz Error Amplifier action, is independently controllable for each output • Undervoltage Lockout (UVLO) pair (A-B, C-D). • Low Startup Current – 150 µA With the oscillator capable of operation at frequencies • Outputs Active Low During UVLO in excess of 2 MHz, overall switching frequencies to • Soft-Start Control 1 MHz are practical. In addition to the standard free • Latched Overcurrent Comparator With Full Cycle running mode, with the CLOCKSYNC pin, the user may configure these devices to accept an external Restart clock synchronization signal, or may lock together up • Trimmed Reference to 5 units with the operational frequency determined by the fastest device. 2 Applications Power FPGAs Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LCCC (28) 11.43 mm × 11.43 mm UC1875-SP CDIP (20) 24.20 mm × 6.92 mm CFP (24) 14.36 mm × 9.09 mm (1) Radiation tolerance is a typical value based upon initial device qualification with a dose rate = 10 mrad/sec and applies to the (1) For all available packages, see the orderable addendum at 5962-9455502 devices. Radiation lot acceptance testing is the end of the data sheet. available – contact factory for details. Block Diagram 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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Description similaire - UC1875-SP |
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