SELF-OSCILLATING HALF-BRIDGE DRIVER

Transcription

1 Data Sheet No. PD60029 revj I2155&(PbF) (NOTE: For new designs, we recommend I s new products I2153 and I21531) SELF-OSCILLATING HALF-BIDGE DIE Features Floating channel designed for bootstrap operation Fully operational to +600 Tolerant to negative transient voltage d/dt immune Undervoltage lockout Programmable oscillator frequency Description 1 f = 1.4 ( Ω) C Typical Connection T Matched propagation delay for both channels Micropower supply startup current of 125 µa typ. Low side output in phase with T Available in Lead-Free The I2155 is a high voltage, high speed, selfoscillating power MOSFET and IGBT driver with both high and low side referenced output channels. Proprietary HIC and latch immune CMOS technologies enable ruggedized monolithic construction. The front end features a programmable oscillator which is similar to the 555 timer. The output drivers feature a high pulse current buffer stage and an internal deadtime designed for minimum driver crossconduction. Propagation delays for the two channels are matched to simplify use in 50% duty cycle applications. The floating channel can be used to drive an N-channel power T Product Summary OFFSET 600 max. Duty Cycle 50% I O +/- OUT 210 ma / 420 ma Deadtime (typ.) 1.2 µs Package 8 Lead PDIP MOSFET or IGBT in the high side configuration that operates off a high voltage rail up to 600 volts. up to 600 T B TO AD COM S (efer to Lead Assignment diagram for correct pin configuration) 1

2 Absolute Maximum atings Absolute Maximum atings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are absolute voltages referenced to COM. The Thermal esistance and Power Dissipation ratings are measured under board mounted and still air conditions. alue Symbol Definition Min. Max. Units B High Side Floating Supply oltage S High Side Floating Supply Offset oltage B - 25 B High Side Floating Output oltage S B Low Side Output oltage T T oltage CT oltage I CC Supply Current (Note 1) 25 I T T Output Current -5 5 d s /dt Allowable Offset Supply oltage Transient 50 /ns P D Package Power T A +25 C (8 Lead DIP) 1.0 (8 Lead SOIC) θja Thermal esistance, Junction to Ambient (8 Lead DIP) 125 (8 Lead SOIC) 200 T J Junction Temperature 150 T S Storage Temperature C T L Lead Temperature (Soldering, 10 seconds) 300 ecommended Operating Conditions The Input/Output logic timing diagram is shown in Figure 1. For proper operation the device should be used within the recommended conditions. The S offset rating is tested with all supplies biased at 15 differential. alue Symbol Definition Min. Max. Units B High Side Floating Supply Absolute oltage S + 10 S + 20 S High Side Floating Supply Offset oltage 600 High Side Floating Output oltage S B Low Side Output oltage 0 I CC Supply Current (Note 1) 5 ma T A Ambient Temperature C ma W C/W Note 1: Because of the I2155 s application specificity toward off-line supply systems, this IC contains a zener clamp structure between the chip and COM which has a nominal breakdown voltage of Therefore, the IC supply voltage is normally derived by forcing current into the supply lead (typically by means of a high value resistor connected between the chip and the rectified line voltage and a local decoupling capacitor from to COM) and allowing the internal zener clamp circuit to determine the nominal supply voltage. Therefore, this circuit should not be driven by a DC, low impedance power source of greater than CLAMP. 2

3 Dynamic Electrical Characteristics BIAS (, BS ) = 12, C L = 1000 pf and T A = 25 C unless otherwise specified. I2155&(PbF) alue Symbol Definition Min. Typ. Max. Units Test Conditions t r Turn-On ise Time t r Turn-Off Fall Time ns DT Deadtime µs D T Duty Cycle % Static Electrical Characteristics BIAS (, BS ) = 12, C L = 1000 pf, = 1 nf and T A = 25 C unless otherwise specified. The IN, TH and I IN parameters are referenced to COM. The O and I O parameters are referenced to COM and are applicable to the respective output leads: or. alue Symbol Definition Min. Typ. Max. Units Test Conditions f OSC Oscillator Frequency T = 35.7 kω khz T = 7.04 kω CLAMP Zener Shunt Clamp oltage I CC = 5 ma CT+ 2/ CT- 1/ CTU Undervoltage Lockout < < U T+ T High Level Output oltage, - T I T = -100 µa I T = -1 ma T- T Low Level Output oltage I T = 100 µa m I T = 1 ma TU T Undervoltage Lockout, - T < < U OH High Level Output oltage, BIAS - O 100 I O = 0A OL Low Level Output oltage, O 100 I O = 0A I LK Offset Supply Leakage Current 50 B = S = 600 I QBS Quiescent BS Supply Current I QBSU Micropower BS Supply Startup Current I QCC Quiescent Supply Current µa I QCCU Micropower Supply Startup Current I CT Input Current BSU+ BS Supply Undervoltage Positive Going BSU- BS Supply Undervoltage Negative Going BSUH BS Supply Undervoltage Lockout Hysteresis m U+ Supply Undervoltage Positive Going U- Supply Undervoltage Negative Going UH Supply Undervoltage Lockout Hysteresis m I O+ Output High Short Circuit Pulsed Current O = 0 ma I O- Output Low Short Circuit Pulsed Current O =

4 Functional Block Diagram B T S Q Q U DETECT DEAD TIME DEAD TIME PULSE GEN H LEEL SHIFT U DETECT PULSE FILTE DELAY Q S 15.6 S COM Lead Definitions Lead Symbol Description T B S COM Oscillator timing resistor input,in phase with for normal IC operation Oscillator timing capacitor input, the oscillator frequency according to the following equation: 1 f = 1.4 (T Ω) CT where 150Ω is the effective impedance of the T output stage High side floating supply High side gate drive output High side floating supply return Low side and logic fixed supply Low side gate drive output Low side return Lead Assignments 8 Lead DIP I

5 8 Lead PDIP

6 U+ CLAMP T () T T () 50% 50% t r tf 90% 90% 10% 10% Figure 1. Input/Output Timing Diagram Figure 2. Switching Time Waveform Definitions T 50% 50% 90% 90% 10% DT 10% Figure 3. Deadtime Waveform Definitions 6

7 ODE INFOMATION Basic Part (Non-Lead Free) Lead-Free Part 8-Lead PDIP I2155 order I Lead PDIP I2155 order I2155PbF This product has been designed and qualified for the Industrial market. Qualification Standards can be found on I s Web Site. Data and specifications subject to change without notice. I WOLD HEADQUATES: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) TAC Fax: (310) isit us at for sales contact information. 09/08/04 7