MAX5003 19-1555 Rev 2 4/02 High-Voltage PWM Power-Supply Controller General Description Features The MAX5003 high-voltage switching power-supply Wide Input Range: 11V to 110V controller has all the features and building blocks need- Internal High-Voltage Startup Circuit ed for a cost-effective flyback and forward voltage- mode control converter. This device can be used to Externally Adjustable Settings design both isolated and nonisolated power supplies Output Switch Current Limit with multiple output voltages that operate from a wide Oscillator Frequency range of voltage sources. It includes a high-voltage Soft-Start internal start-up circuit that operates from a wide 11V to Undervoltage Lockout 110V input range. The MAX5003 drives an external N- Maximum Duty Cycle channel power MOSFET and has a current-sense pin that detects overcurrent conditions and turns off the Low External Component Count power switch when the current-limit threshold is External Frequency Synchronization exceeded. The choice of external power MOSFET and other external components determines output voltage Primary or Secondary Regulation and power. Input Feed-Forward for Fast Line-Transient The MAX5003 offers some distinctive advantages: soft- Response start, undervoltage lockout, external frequency synchro- Precision 2.5% Reference over Rated nization, and fast input voltage feed-forward. The device is designed to operate at up to 300kHz switch- Temperature Range ing frequency. This allows use of miniature magnetic Thermal Shutdown components and low-profile capacitors. Undervoltage lockout, soft-start, switching frequency, maximum duty cycle, and overcurrent protection limit are all adjustable Ordering Information using a minimum number of external components. In systems with multiple controllers, the MAX5003 can be PART TEMP. RANGE PIN-PACKAGE externally synchronized to operate from a common sys- MAX5003CEE 0C to +70C 16 QSOP tem clock. MAX5003CSE 0C to +70C 16 Narrow SO Warning: The MAX5003 is designed to operate with MAX5003C/D (Note A) Dice high voltages. Exercise caution. MAX5003EEE -40C to +85C 16 QSOP The MAX5003 is available in 16-pin SO and QSOP pack- MAX5003ESE -40C to +85C 16 Narrow SO ages. An evaluation kit (MAX5003EVKIT) is also available. Note: Dice are designed to operate over a -40C to +140C junc- tion temperature (T ) range, but are tested and guaranteed at j T = +25C. A Applications Pin Configuration Telecommunication Power Supplies ISDN Power Supplies TOP VIEW +42V Automobile Systems V+ 1 16 V DD High-Voltage Power-Supply Modules INDIV 2 15 V CC Industrial Power Supplies ES 3 14 NDRV 4 MAX5003 FREQ 13 PGND SS 5 12 CS REF 6 11 AGND CON 7 10 MAXTON COMP 8 9 FB QSOP/Narrow SO Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLEHigh-Voltage PWM Power-Supply Controller ABSOLUTE MAXIMUM RATINGS V+ to GND............................................................-0.3V to +120V Continuous Power Dissipation (T = +70C) A ES to GND ..............................................................-0.3V to +40V 16-Pin SO (derate 9.5mW/C above +70C)...............762mW V to GND............................................................-0.3V to +19V 16-Pin QSOP (derate 8.3mW/C above +70C)..........667mW DD V to GND.........................................................-0.3V to +12.5V Maximum Junction Temperature (T ) ..............................+150C CC J MAXTON, COMP, CS, FB, CON to GND..................-0.3V to +8V Operating Temperature Ranges NDRV, SS, FREQ to GND...........................-0.3V to (V + 0.3V) MAX5003C E ....................................................0C to +70C CC I , REF to GND.................................................-0.3V to +4.5V MAX5003E E ..................................................-40C to +85C NDIV V , V , V+, ES Current ................................................20mA Operating Junction Temperature (T ) .............................+125C CC DD J NDRV Current, Continuous...............................................25mA 16-Pin SO .................................................................105C/W JA NDRV Current, 1s .............................................................1A 16-Pin QSOP ............................................................120C/W JA CON and REF Current......................................................20mA Storage Temperature Range .............................-65C to +150C All Other Pins....................................................................20mA Lead Temperature (soldering, 10s) .................................+300C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V+ = V = V = +12V, V = 2V, V = 0, R = R = 200k , T = T to T , unless otherwise noted. Typical ES DD INDIV CON FREQ MAXTON A MIN MAX values are at T = +25C.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SUPPLY CURRENT V = 0, V+ = 110V, V = V = INDIV ES DD Shutdown Current I+ 35 75 A unconnected Supply Current I V+ = V , V = 18.75 1.2 mA DD ES DD PREREGULATOR/STARTUP I = 2mA 25 V NDRV E = V = uncon- S DD V+ Input Voltage (Note 1) V+ nected I = 5mA 110 V NDRV E Input Voltage (Note 1) V V = unconnected, V+ = V , I = 7.5mA 10.8 36 V S ESI DD ES NDRV E Output Voltage V V+ = 110V, V = unconnected 36 V S ESO DD V+ = 36V, I = 0 to 7.5mA, DD V Output Voltage V 9 9.75 10.5 V DD DD ES = unconnected V Input Voltage Range V V+ = V = 36V, I = 7.5mA 10.75 18.75 V DD DD ES NDRV V+ = 36V, I < 75A, V+ V Regulator Turn-Off Voltage V 10.75 V DD TO ES = unconnected CHIP SUPPLY (V ) CC V+ = 36V, ES = unconnected, V Output Voltage V 7.4 12 V CC CC V = 18.75V DD V Undervoltage CC V V falling 6.3 V CCLO CC Lockout Voltage OUTPUT DRIVER 570 Peak Source Current V = 0, V supported by V capacitor mA NDRV CC CC Peak Sink Current V = V 1000 mA NDRV CC NDRV Resistance High R I = 50 mA 412 OH NDRV NDRV Resistance Low R I = 50 mA 1 OL NDRV REFERENCE REF Output Voltage V No load 2.905 3.000 3.098 V REF REF Voltage Regulation V I = 0 to 1mA 520 mV REF REF 2 MAX5003