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| TPL7407L七路高壓大電流NMOS驅(qū)動器解決方案 |
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| 文章來源： 更新時間：2014/8/11 9:48:00 |
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TI公司的TPL7407L是七路高壓大電路NMOS晶體管陣列,每路輸出電流高達600mA,輸出電壓40V,輸出漏電流小于10nA,控制邏輯1.8V-5.0V,主要用混合電力汽車電池管理, 電動汽車充電器, 馬達控制,太陽能逆變器,家用電器,打印機,示波器,通信/服務器電源等.本文介紹了TPL7407L 主要特性, 簡化電路圖和多種應用電路.以及評估板TPL7407LEVM主要特性,單路電路圖和完整電路圖與PCB元件布局圖.
The TPL7407L is a high-voltage, high-current NMOS transistor array. This device consists of seven NMOS transistors that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. The maximum drain-current rating of a single NMOS channel is 600 mA. New regulation and drive circuitry added to give maximum drive strength across all GPIO ranges (1.8V-5.0V).The transistors can be paralleled for higher current capability.
The TPL7407L’s key benefit is its improved power efficiency and lower leakage than a Bipolar Darlington Implementation. With the lower VOL the user is dissipating less than half the power than traditional relay drivers with currents less than 250mA per channel.
TPL7407L 主要特性:
600mA-Rated Drain Current (Per Channel)
CMOS Pin-to-Pin Improvement of 7-channel Darlington Array (e.g. ULN2003A)
Power Efficient (Very low VOL)
Less Than 4 Times Lower VOL at 100mA Than Darlington Arrray
Very Low Output Leakage < 10nA Per Channel
Extended Ambient Temperature Range:
TA = –40℃ to 125℃
High-Voltage Outputs 40V
Compatible with 1.8V to 5.0V Micro-controllers and Logic Interface
Internal Free-wheeling Diodes for Inductive Kick-back Protection
Input Pull-down Resistors Allows Tri-stating the Input Driver
Input RC-Snubber to Eliminate Spurious Operation in Noisy Environment
Inductive Load Driver Applications
ESD Protection Exceeds JESD 22
2kV HBM, 500V CDM
Available in 16-pin SOIC and TSSOP Packages
TPL7407L主要應用:
Battery Management: High Cell Count for HEV
EV HEV Charger: Level 3
Motor Control: AC Induction
Motor Control: Brushless DC
Motor Control: Permanent Magnet
Oscilloscope
Printer
Solar Power Inverters
Washing Machine: Low-End
EV HEV Charger: Level 1 & 2
HVAC - Heating, Ventilating, and Air Conditioning
Motor Control: Brushed DC
Motor Control: Low-Voltage
Motor Control: Stepper Motor
Power: Telecom/Server AC/DC Supply: Dual Controller: Analog
Refrigerator
Washing Machine: High-End
圖1. TPL7407L簡化電路圖
圖2. TPL7407L步進馬達驅(qū)動電路圖
圖3. TPL7407L多用圖沉驅(qū)動電路圖
圖4. TPL7407L 24V繼電器驅(qū)動電路圖
評估板TPL7407LEVM
The TPL7407LEVM is 7-Channel relay and Inductive load sink driver evaluation module that demonstrates the integrated circuit TPL7407LDR. The TPL7407LDR is a high-performance peripheral driver designed to drive loads of many types including relays, stepper motors, lamps, and light emitting diodes.
This EVM is configured with seven push buttons that supply input to the TPL7407L driver and seven relays are driven by the TPL7407L outputs. A four terminal block must be connected to external power supplies to provide input and relay power. All of the TPL7407L input and output pins are accessible for external connection.
圖5: 評估板TPL7407LEVM外形圖
評估板TPL7407LEVM主要特性:
Seven numbered push-buttons control input for easy basic device testing
Three 0.1” spaced post connector ports allow access to all input and output pins and relay contacts Three open locations per channel on circuit board for user supplied components Onboard relay loads can be disconnected by removing surface mount zero ohm resistors Device clearance area is large to allow use of small profile temperature forcing equipment
評估板TPL7407LEVM主要指標:
圖6: 評估板TPL7407LEVM單路電路圖
圖7: 評估板TPL7407LEVM電路圖
圖8: 評估板TPL7407LEVM PCB元件布局圖 |
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