Datasheet

ManualsBrandsINTERSIL ManualsPMICsPMIC - gate drivers ICL 7667 Inverting High OR low side PDIP 8

3-73

File Number

2853.3

ICL7667

Dual Power MOSFET Driver

The ICL7667 is a dual monolithic high-speed driver

designed to convert TTL level signals into high current

outputs at voltages up to 15V. Its high speed and current

output enable it to drive large capacitive loads with high slew

rates and low propagation delays. With an output voltage

swing only millivolts less than the supply voltage and a

maximum supply voltage of 15V, the ICL7667 is well suited

for driving power MOSFETs in high frequency switched-

mode power converters. The ICL7667’s high current outputs

minimize power losses in the power MOSFETs by rapidly

charging and discharging the gate capacitance. The

ICL7667’s inputs are TTL compatible and can be directly

driven by common pulse-width modulation control ICs.

Functional Diagram

Features

• Fast Rise and Fall Times

- 30ns with 1000pF Load

• Wide Supply Voltage Range

-V

= 4.5V to 15V

• Low Power Consumption

- 4mW with Inputs Low

- 20mW with Inputs High

• TTL/CMOS Input Compatible Power Driver

-R

OUT

= 7Ω Typ

• Direct Interface with Common PWM Control ICs

• Pin Equivalent to DS0026/DS0056; TSC426

Applications

• Switching Power Supplies

• DC/DC Converters

• Motor Controllers

Pinouts

ICL7667 (CAN)

TOP VIEW

ICL7667 (PDIP, SOIC, CERDIP)

TOP VIEW

Ordering Information

PART

NUMBER

TEMP. RANGE

(

C) PACKAGE PKG. NO.

ICL7667CBA 0 to 70 8 Ld SOIC (N) M8.15

ICL7667CPA 0 to 70 8 Ld PDIP E8.3

ICL7667CJA 0 to 70 8 Ld CERDIP F8.3A

ICL7667CTV 0 to 70 8 Pin Metal Can T8.C

ICL7667MTV

(Note 1)

-55 to 125 8 Pin Metal Can T8.C

ICL7667MJA

(Note 1)

-55 to 125 8 Ld CERDIP F8.3A

NOTE:

1. Add /883B to Part Number for 883B Processing

≈2mA

OUT

V+

N/CN/C

V-

OUT A

IN A

OUT B

IN B

N/C

OUT A

V+

OUT B

N/C

IN A

V-

IN B

Data Sheet April 1999

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

http://www.intersil.com or 407-727-9207

Summary of content (8 pages)

PAGE 1
ICL7667 Data Sheet April 1999 Dual Power MOSFET Driver Features The ICL7667 is a dual monolithic high-speed driver designed to convert TTL level signals into high current outputs at voltages up to 15V. Its high speed and current output enable it to drive large capacitive loads with high slew rates and low propagation delays.
PAGE 2
ICL7667 Absolute Maximum Ratings Thermal Information Supply Voltage V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15V Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . V- -0.3V to V+ +0.3V Package Dissipation, TA 25oC . . . . . . . . . . . . . . . . . . . . . . . .500mW Thermal Resistance (Typical, Note 2) θJA (oC/W) θJC(oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . 150 N/A SOIC Package . . . . . . . . . . . . . . . . . . . 170 N/A Metal Can Package .
PAGE 3
ICL7667 Test Circuits V- = 15V +5V 90% + 4.7µF INPUT 0.1µF 10% ≈0.4V INPUT TD1 OUTPUT CL = 1000pF ICL7667 TD2 tr tf 15V 90% 90% INPUT RISE AND FALL TIMES ≤10ns OUTPUT 10% 10% 0V Typical Performance Curves 1µs 100 VCC = 15V CL = 1nF VCC = 15V 90 TD1 AND TD2, (ns) 80 tr AND tf , (ns) 100 tRISE 10 70 60 TD2 50 40 TD1 30 20 tFALL 10 1 0 10 100 1000 10K 100K -55 0 CL (pF) FIGURE 1. RISE AND FALL TIMES vs CL 25 70 TEMPERATURE (oC) 125 FIGURE 2.
PAGE 4
ICL7667 Typical Performance Curves (Continued) 100 VCC = 15V ICC (mA) ICC (mA) 100 10 VCC = 15V 10 VCC = 5V 1 1 VCC = 5V CL = 1nF 100µA 10K 100K 1M 10M CL = 10pF 100mA 10k 100k FREQUENCY (Hz) FIGURE 6. NO LOAD ICC vs FREQUENCY 50 50 40 40 tr AND tD2 , (ns) tD1 AND tf , (ns) FIGURE 5. ICC vs FREQUENCY 30 tf 20 tD1 30 tr = TD2 20 10 10 CL = 10pF CL = 1nF 0 5 10M 1M FREQUENCY (Hz) 0 10 VCC (V) 15 5 FIGURE 7. DELAY AND FALL TIMES vs VCC 10 VCC (V) 15 FIGURE 8.
PAGE 5
ICL7667 peak current capability of the ICL7667 enables it to drive a 1000pF load with a rise time of only 40ns. Because the output stage impedance is very low, up to 300mA will flow through the series N-Channel and P-channel output devices (from VCC to ground) during output transitions. This crossover current is responsible for a significant portion of the internal power dissipation of the ICL7667 at high frequencies.
PAGE 6
ICL7667 Transformer Coupled Drive of MOSFETs 18 GATE TO SOURCE VOLTAGE Transformers are often used for isolation between the logic and control section and the power section of a switching regulator. The high output drive capability of the ICL7667 enables it to directly drive such transformers. Figure 11 shows a typical transformer coupled drive circuit.
PAGE 7
ICL7667 18V CA CB VIN +V +165V 1µF IRF730 EA 0V 470 ICL7667 CA1524 1µF IRF730 EB -165V 470 -V VOUT FIGURE 11. TRANSFORMER COUPLED DRIVE CIRCUIT V+ 0.1µF 0.1µF 4.7µF IN914 D1 + 4.7µF R1 10k 1000pF C1 Q2 1/2 ICL7667 0V - 5V INPUT FROM PWM IC 2200pF FF10 IRFF120 5FF10 ZL 1/2 ICL7667 IRFF120 Q1 FIGURE 12. VERY HIGH SPEED DRIVER -4 f = 10kHz -6 VOUT (V) -8 +15V SLOPE = 60Ω -10 -12 1kHz - 250kHz SQUARE WAVE IN TTL LEVELS + 1/2 ICL7667 - IN4001 -13.
PAGE 8
ICL7667 Other Applications Clock Driver Relay and Lamp Drivers The ICL7667 is suitable for converting low power TTL or CMOS signals into high current, high voltage outputs for relays, lamps and other loads. Unlike many other level translator/driver ICs, the ICL7667 will both source and sink current. The continuous output current is limited to 200mA by the I2R power dissipation in the output FETs.