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부품번호 | UC3707 기능 |
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기능 | Dual Channel Power Driver | ||
제조업체 | Unitrode | ||
로고 | |||
전체 8 페이지수
Dual Channel Power Driver
UC1707
UC2707
UC3707
FEATURES
• Two independent Drivers
• 1.5A Totem Pole Outputs
• Inverting and Non-Inverting Inputs
• 40ns Rise and Fall into 1000pF
• High-Speed, Power MOSFET
Compatible
• Low Cross-Conduction Current Spike
• Analog Shutdown with Optional Latch
• Low Quiescent Current
• 5V to 40V Operation
• Thermal Shutdown Protection
• 16-Pin Dual-In-Line Package
• 20-Pin PLCC and CLCC Package
BLOCK DIAGRAM
DESCRIPTION
The UC1707 family of power drivers is made with a high-speed Schottky
process to interface between low-level control functions and high-power
switching devices - particularly power MOSFETs. These devices contain
two independent channels, each of which can be activated by either a high
or low input logic level signal. Each output can source or sink up to 1.5A as
long as power dissipation limits are not exceeded.
Although each output can be activated independently with its own inputs, it
can be forced low in common through the action either of a digital high sig-
nal at the Shutdown terminal or a differential low-level analog signal. The
Shutdown command from either source can either be latching or not, de-
pending on the status of the Latch Disable pin.
Supply voltage for both VIN and VC can independently range from 5V to
40V.
These devices are available in two-watt plastic "bat-wing" DIP for operation
over a 0°C to 70°C temperature range and, with reduced power, in a her-
metically sealed cerdip for –55°C to +125°C operation. Also available in
surface mount DW, Q, L packages.
TRUTH TABLE (Each Channel)
INV. N.I. OUT OUT = INV and N.I.
H H L OUT = INV or N.I.
L HH
H LL
L LL
03/99
SIMPLIFIED INTERNAL CIRCUITRY
UC1707
UC2707
UC3707
The input common-mode voltage range is from ground to (VIN-3V). When not used both inputs shoul1d be grounded. Activate
time is a function of overdrive with a typical value of 180ns. Pin 7 serves both as a comparator output and as a common digital
shutdown input. A high signal here will accomplish the fastest turn off of both outputs. Note that "OFF" is defined as the outputs
low. Pulling shutdown low defeats the latch operation regardless of its status.
Figure 1. Typical digital input gate.
The input zener may be used to clamp input signal voltages
higher than 5V as long as the zener current is limited to
10mA max. External pull-up resistors are not required.
Figure 2. Typical digital input gate.
The Shutdown latch is disabled when pin 3 is open. An im-
pedance of 4k or less from pin 3 to ground will allow a shut-
down signal to set the latch which can then be reset by
either recycling the VIN supply or by momentarily (>200ns)
raising pin 3 high.
Figure 3. Latch disable.
4
4페이지 TRANSFORMER COUPLING
UC1707
UC2707
UC3707
D1, D2: UC3611 Schottky Diode
Figure 10. Transformer coupled MOSFET drive circuit.
D1, D2: UC3611 Schottky Diode
Figure 11. Power MOSFET drive circuit using negative bias voltage and level shifting to ground reference
PWM.
UNITRODE CORPORATION
7 CONTINENTAL BLVD. • MERRIMACK, NH 03054
TEL. (603) 424-2410 • FAX (603) 424-3460
7
7페이지 | |||
구 성 | 총 8 페이지수 | ||
다운로드 | [ UC3707.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
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DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |