MAX5060 MAXIM [Maxim Integrated Products], MAX5060 Datasheet

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... This accommodates the use of PC-board-embedded planar magnetics. The MAX5060 features a clock output with 180° phase delay to control a second out-of-phase converter for lower capacitor ripple currents. The MAX5060 also limits the reverse current if the bus voltage becomes higher than the regulated output voltage ...

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... TQFN (derate 34.5mW/°C above +70°C)* ......2758mW DD + 0.3V) Operating Temperature Range CC MAX5060A_ _ and MAX5061A_ _ .................-40°C to +125°C MAX5060E_ _ and MAX5061E_ _ ....................-40°C to +85°C Maximum Junction Temperature .....................................+150°C Storage Temperature Range .............................-60°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C ...

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... DD CC (Note 1) PARAMETER OSCILLATOR Switching Frequency Range Switching Frequency Switching Frequency Accuracy CLKOUT Phase Shift (MAX5060) CLKOUT Output Low Level (MAX5060) CLKOUT Output High Level (MAX5060) SYNC Input-High Pulse Width SYNC Input Clock High Threshold SYNC Input Clock Low Threshold SYNC Pullup Current ...

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... V (MAX5060 only (Note 1) PARAMETER CURRENT-ERROR AMPLIFIER (Transconductance Amplifier) Transconductance Open-Loop Gain DIFFERENTIAL VOLTAGE AMPLIFIER (DIFF, MAX5060 only) Common-Mode Voltage Range V DIFF Output Voltage Input Offset Voltage Amplifier Gain 3dB Bandwidth Minimum Output-Current Drive SENSE+ to SENSE- Input Resistance V_IOUT AMPLIFIER (V_IOUT, MAX5060 only) ...

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... Average-Current-Mode DC-DC Controllers ELECTRICAL CHARACTERISTICS (continued 5V (MAX5060 only (Note 1) PARAMETER ENABLE INPUTS EN Input High Voltage (MAX5060) EN Input Hysteresis (MAX5060) EN Pullup Current (MAX5060) RT/SYNC/EN Input High Voltage V RT/SYNC/EN Enable (MAX5061) RT/SYNC/EN Input Low Voltage V RT/SYNC/EN Disable (MAX5061) THERMAL SHUTDOWN ...

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Output, Parallelable, Average-Current-Mode DC-DC Controllers (T = +25°C, Figures 1 and 2, unless otherwise noted.) A EFFICIENCY vs. OUTPUT CURRENT AND INPUT VOLTAGE 100 12V ...

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... CC vs. INPUT VOLTAGE 5.25 5. 24V IN 5. 4.85 4. 100 V LOAD CURRENT (mA) CC HIGH-SIDE DRIVER (DH) SINK AND SOURCE CURRENT C LOAD V = 12V IN 100ns/div HIGH-SIDE DRIVER (DH) FALL TIME C LOAD V = 12V IN 2V/div 40ns/div = 12V IN 125 150 MAX5060 toc15 = 22nF 2A/div MAX5060 toc18 = 22nF 2V/div 7 ...

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... V = 12V 1.5V OUT I = 20A OUT 2ms/div REVERSE CURRENT SINK AT INPUT TURN- 12V 1.5V 2.0V) IN OUT EXTERNAL MAX5060 toc26 2A/div 200 s/div OUTPUT RIPPLE MAX5060 toc21 V = 12V 1.5V OUT I = 20A OUT 50mV/div 1 s/div LOAD-TRANSIENT RESPONSE MAX5060 toc24 V OUT 200mV/div I OUT 10A/div V = 12V ...

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... SW 1 s/div FREQUENCY vs 10,000 V = 12V IN 1000 5A/div 100 30 110 190 270 350 70 150 230 310 390 OUTPUT SHORT-CIRCUIT WAVEFORM MAX5060 toc32 V = 12V OPEN OUT LIM I OUT 10A/div V OUT 2V/div EN 2V/div 40ms/div SYNC 5V/div CLKOUT 5V/div ...

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... OVI 16 11 CLP 10 ______________________________________________________________________________________ Power Ground. Connect PGND, low-side synchronous MOSFET’s source, and V (MAX5060)/V (MAX5061) bypass capacitor returns together Connection. Not internally connected. DL Low-Side Gate-Driver Output. Synchronous MOSFET gate driver. Boost Flying-Capacitor Connection. Reservoir capacitor connection for the high- side MOSFET driver supply. Connect a 0.47µ ...

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... The error-amplifier gain-setting resistors determine the amount of adaptive voltage positioning. Voltage-Error-Amplifier Inverting Input. Receives a signal from the output of the differential remote-sense amplifier (MAX5060). Connect the center tap of the resistor-divider from the output to SGND (MAX5061). Differential Remote-Sense Amplifier Output. DIFF is the output of a precision unity-gain amplifier whose inputs are SENSE+ and SENSE- ...

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... C6 C7 Figure 1. Typical Application Circuit ______________________________________________________________________________________ V IN CSN CSP C3– C12 MAX5060 D3 BST RT/ C8 SYNC SGND PGOOD SYNC = 12V (MAX5060) Typical Application Circuit C12 C13 LOAD C10 C11 R11 PGOOD V = 0.6V TO OUT 5.5V AT 20A ...

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Average-Current-Mode DC-DC Controllers SYNC R T OFF Figure 2. Typical Application Circuit ______________________________________________________________________________________ 0.6V to 5.5V Output, Parallelable, Typical Application Circuit (continued 12V IN C1, C2 R13 ...

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... RT/SYNC OSCILLATOR CLKOUT DIFF +0.6V SENSE- DIFF AMP SENSE+ EAOUT ERROR AMP EAN VEA SOFT 0.6V REF START V (0.6V) CM OVI Figure 3. Functional Diagram (MAX5060) 14 ______________________________________________________________________________________ 0. UVLO POR TEMP SENSOR TO INTERNAL HICCUP MODE CIRCUITS CURRENT LIMIT 126.7k 100k 0 CLAMP 34 ...

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Average-Current-Mode DC-DC Controllers 0. LDO REGULATOR V CC LIM CLP CSP CSN SGND RT/SYNC/EN OSCILLATOR RAMP GENERATOR EAOUT ERROR AMP EAN VEA SOFT 0.6V REF START Figure 4. Functional Diagram ...

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... The TQFN-28 and TSSOP-16 are thermally enhanced packages and can dissipate up to 2.7W and 1.7W, respectively. The high-power packages allow the high-frequency, high-current buck converter to oper- ate from a 12V or 24V bus. Calculate power dissipa- tion in the MAX5060/MAX5061 as a product of the input voltage and the total V rent ( ...

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... RT/SYNC (MAX5060) or RT/SYNC/EN (MAX5061 external clock is pre- sent, then the internal oscillator is disabled and the external clock is used to run the MAX5060/MAX5061. If the external clock is removed, the absence of clock for 32µs is detected and the circuit starts switching from 10 the internal oscillator ...

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... CEA with ramp from the oscillator. The PWM ON cycle terminates when the ramp voltage exceeds the error voltage. The MAX5060 outer voltage control loop consists of the differential amplifier (DIFF AMP), reference voltage, and VEA. The unity-gain differential amplifier provides true- differential remote sensing of the output voltage ...

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... The dif- ferential amplifier has a bandwidth of 3MHz. The differ- ence between SENSE+ and SENSE- is regulated to 0.6V for the MAX5060. Connect SENSE+ to the center of the resistive divider from the output to SENSE-. Connect SENSE- to PGND near the load. ...

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... V H supplies power internally to the low-side driver. Connect a F 0.47µF low-ESR ceramic capacitor between BST and LX. Connect a Schottky rectifier from BST to V MAX5060 board area formed by the boost capacitor and rectifier. FULL LOAD 1/2 LOAD LOAD (A) MOSFET Gate Drivers (DH_, DL_) and a very low gate charge ...

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... LIM to SGND. In this case, the circuit will follow the average current-limit action during overload conditions. An internal clamp (MAX5060) limits the continuous reverse current the buck converter sinks when a higher voltage is applied at the output. The reverse current limit translated at the current-amplifier input is -2 ...

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... The paralleled converters operate at the same switching frequency but different phases keep the input capacitor ripple RMS currents to a minimum. The MAX5060 provides the clock output (CLKOUT), which is 180° out-of-phase with respect to DH. For the MAX5061, the out-of-phase clock can be easily generated using a simple inverter and driving it from the LX node ...

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... Average-Current-Mode DC-DC Controllers SENSE- SENSE+ CSN CSP MAX5060 DIFF LX EAN DL EAOUT RT/SYNC PGND SGND CLKOUT Figure 11. Parallel Configuration of Multiple MAX5060s ______________________________________________________________________________________ 0.6V to 5.5V Output, Parallelable, 90 PHASE DELAY CIRCUIT V IN CSN RT/SYNC CSP V IN MAX5060 IN DH DIFF LX EAN DL EAOUT PGND SGND CLKOUT 90 PHASE DELAY ...

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... MOSFETs create switching losses. The situation wors- ens at higher input voltages, since switching losses are proportional to the square of the input voltage. The MAX5060 can operate up to 1.5MHz, however for V +12V, use lower switching frequencies to limit the switching losses. Use the following equation to determine the minimum ...

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Average-Current-Mode DC-DC Controllers RMS HI where OUT IN DC OUT ( /2). OUT MOS ...

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... See the Hiccup Current Limit vs. R Operating Characteristics. The MAX5060 limits the reverse current in case V is the RESPONSE higher than the preset output voltage. Calculate the maximum reverse current based on V current-limit threshold and the current-sense resistor ...

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... The TQFN-28 and TSSOP-16 are thermally enhanced packages and can dissipate about 2.7W and 1.7W, respectively. The high-power packages make the high- frequency, high-current buck converter possible to operate from a 12V or 24V bus. Calculate power dissi- pation in the MAX5060/MAX5061 as a product of the input voltage and the total V regulator output current ...

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... Output, Parallelable, Average-Current-Mode DC-DC Controllers TOP VIEW MAX5060 26 27 EXPOSED PAD THIN QFN 28 ______________________________________________________________________________________ TRANSISTOR COUNT: 5654 PROCESS: BiCMOS Pin Configurations SGND CSP CC PGND 3 14 CSN MAX5061 ...

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Average-Current-Mode DC-DC Controllers (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.) D D/2 MARKING AAAAA PIN # 1 I.D. C -DRAWING NOT TO SCALE- ______________________________________________________________________________________ ...

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Output, Parallelable, Average-Current-Mode DC-DC Controllers (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.) COMMON DIMENSIONS PKG. 16L 5x5 20L 5x5 SYMBOL MIN. ...

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Average-Current-Mode DC-DC Controllers (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 responsibility for use of any circuitry other than circuitry ...