XR79110 22V, 10A Synchronous Step Down COT Power Module June 25, 2021 FEATURES General Description Controller, drivers, bootstrap diode and capacitor, MOSFETs, inductor, CIN and COUT The XR79110 is a 10A synchronous step-down Power Module for point-of integrated in one package load supplies. A wide 4.5V to 22V input voltage range allows for single 10A step down module supply operation from industry standard 5V, 12V, and 19.6V rails. Wide 4.5V to 22V input voltage range With a proprietary emulated current mode Constant On-Time (COT) con- 0.6V adjustable output voltage trol scheme, the XR79110 provides extremely fast line and load transient Proprietary Constant On-Time control response using ceramic output capacitors. It requires no loop No loop compensation required compensation, hence simplifying circuit implementation and reducing Stable ceramic output capacitor operation overall component count. The control loop also provides 0.35% load and Programmable 200ns to 2s on-time 0.1% line regulation and maintains constant operating frequency. A Constant 400kHz to 800kHz frequency selectable power saving mode allows the user to operate in discontinuous Selectable CCM or CCM / DCM mode (DCM) at light current loads, thereby significantly increasing the CCM / DCM for high efficiency at light-load converter efficiency. With a 96% peak efficiency and 90% for loads as low CCM for constant frequency at light-load as 100mA, the XR79110 is suitable for applications where low power Programmable hiccup current limit with Ther- losses are important. mal Compensation A host of protection features, including over-current, over-temperature, Precision enable and Power Good flag short-circuit and UVLO, help achieve safe operation under abnormal Programmable soft-start operating conditions. 10 x 10 x 4mm QFN package, 260C solder temperature The XR79110 is available in a RoHS compliant, green / halogen free, space-saving 10 x 10 x 4mm QFN package with a 260C lead APPLICATIONS solder temperature. With integrated controller, drivers, bootstrap diode Networking and communications and capacitor, MOSFETs, inductor, CIN and COUT, this solution allows Fast transient Point-of-Loads the smallest possible 10A POL design. Industrial and medical equipment Embedded high power FPGA Ordering Information page 18 Typical Application Line Regulation 1.220 V IN VIN PVIN 1.215 Enable/Mode EN/MODE 1.210 V OUT Power Good PGOOD VOUT 1.205 C IN R3 VCC SW XR79110 1.200 R LIM R1 SS ILIM 1.195 C OUT 1.190 TON FB C C R VCC SS ON R2 1.185 AGND PGND 1.180 4 6 8 1012 1416 182022 V (V) IN 212DSR00 1 Rev. 4A V (V) OUTXR79110 Absolute Maximum Ratings Operating Conditions PV ...............................................................................3V to 22V Stresses beyond the limits listed below may cause IN permanent damage to the device. Exposure to any V ..............................................................................4.5V to 22V IN Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. V ............................................................................4.5V to 5.5V CC PV , V ...................................................................-0.3V to 25V 1 IN IN SW, ILIM.....................................................................-1V to 22V V ...........................................................................-0.3V to 6.0V CC PGOOD, V , T , SS, EN, FB...............................-0.3V to 5.5V CC ON 1 3 BST..........................................................................-0.3V to 36V Switching frequency........................................400kHz to 800kHz BST-SW.......................................................................-0.3V to 6V Junction temperature range............................-40C to +125C 1, 2 SW, ILIM...................................................................-1V to 30V JEDEC51 package thermal resistance, ................ 18.1C/W JA ALL other pins.................................................-0.3V to VCC+0.3V Package power dissipation at 25C.......................................5.5W Storage temperature...........................................-65C to +150C Junction temperature..........................................................150C Note 1: No external voltage applied. Power dissipation...............................................Internally Limited Note 2: The SW pins minimum DC range is -1V, transient is -5V for less than 50ns, -7V for less than 20ns, and -9V for less than 10ns. Lead temperature (soldering, 10 sec)......................260C MSL3 Note 3: Upper limit is a guideline based upon thermal performance. ESD Rating (HBM - Human Body Model)...............................2kV ESD Rating (CDM - Charged Device Model)........................750V Electrical Characteristics Unless otherwise noted: T = 25C, V = 12V, BST = V , SW = AGND = PGND = 0V, C = 4.7F. Limits applying over J IN CC VCC the full operating temperature range are denoted by a Symbol Parameter Conditions Min Typ Max Units Power Supply Characteristics VCC regulating or in dropout 4.5 22 V Input voltage range V IN VCC tied to VIN 4.5 5.5 I VIN input supply current Not switching, V = 12V, V = 0.7V 0.7 2 mA VIN IN FB I VCC quiescent current Not switching, V = V = 5V, V = 0.7V 0.7 2 mA VCC CC IN FB I VIN input supply current f = 500kHz, R = 61.9k , VFB = 0.58V 11 mA VIN ON I Shutdown current Enable = 0V, V = 12V 1 A OFF IN Enable and Under-Voltage Lock-Out UVLO V EN pin rising threshold 1.8 1.9 2.0 V IH EN V EN pin hysteresis 50 mV EN HYS V EN pin rising threshold for 2.8 3.0 3.1 V IH EN DCM / CCM operation V EN pin hysteresis 100 mV EN HYS 212DSR00 2 Rev. 4A