Analog Devices EVAL-LTC7067-AZ Manuel utilisateur

150V Dual High-Side MOSFET Gate

Driver

Rev 0; 6/23

General Description

The EVAL-LTC7067-AZ features the LTC®7067 in a

flexible configuration as a non-synchronous step-down or

as a non-synchronous step-up converter. EVAL-LTC7067-

AZ also has a default set up to test LTC7067 only with a

load capacitor. As both Gate returns are floating, LTC7067

can be configured to drive dual-high side MOSFET, or to

drive high-side and low-side MOSFET. Typical

performance is shown in Table 1.

This demo board features LTC7067, 150V Dual high-side

MOSFET gate driver with overvoltage and undervoltage

protections in a 12-pin MSE package. Refer to the

LTC7067 data sheet for more detailed information.

Evaluation Circuit Photo

Table 1. Performance Summary (TA= 25C)

PARAMETER

CONDITIONS

MIN TYP MAX

UNITS

VIN_OPT

VCC = 10V

140

VCC

4.5 10 14

G1IN/G2IN

VCC = 10V

-0.3 5 6

G1 to G1RTN/G2 to G2RTN

VCC = 10V

9.4 9.6 9.8

G1IN/G2IN rising threshold

1.75

G1IN/G2IN falling threshold

0.5

Propagation delay

Rising

Falling

Rise Time

VCC = 10V, CLOAD = 3.3nF

Fall Time

User Guide

EVAL-LTC7067-AZ

www.analog.com

Analog Devices | 2

Quick Start Procedure

Figure 1. Test Set up

Caution: Do not turn on the power supply until all connections are completed.

•Connect the power supply to VCC and GND.

•Connect one signal generator output to G1IN and GND, another to G2IN and GND. G1 and G2 can be tested altogether

or separately.

•Turn on the power supply and adjust it to 10V.

•Adjust the signal generator to a pulse waveform of 50% duty cycle, 0-5V, 200kHz, turn on the signal generator.

•Connect the probes of an oscilloscope to G1/G2 and GND, G1IN/G2IN and GND for waveforms measurement.

•Verify the G1/G2 amplitude is 9.6V and follow the G1IN/G2IN inputs duty cycle and frequency. Adjust the

frequency/duty cycle of G1IN/G2IN, expect the corresponding change of G1/G2.

Test with Default Load Capacitor

The board has a default set up to test the driver LTC7067 with load capacitors C5 and C6. The typical value of these

capacitors are 3.3nF. Typical waveforms of rising/falling time, propagation delays are below.

Figure 2. G1IN and G1 Rising, CLOAD = 3.3nF Figure 3. G2IN and G2 Rising, CLOAD = 3.3nF

150V Dual High-Side MOSFET Gate

Driver

EVAL-LTC7067-AZ

www.analog.com

Analog Devices | 3

Figure 4. G1IN and G1 Falling, CLOAD = 3.3nF Figure 5. G2IN and G2 Falling, CLOAD = 3.3nF

Figure 6. VCC Supply Current vs. PWM Inputs Frequency, VCC = 10V, CLOAD = 3.3nF

Figure 7. Thermal Picture at VCC =10V,Both G1 and G2 are running at 2MHz, CLOAD = 3.3nF, no forced air flow

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 

150V Dual High-Side MOSFET Gate

Driver

EVAL-LTC7067-AZ

www.analog.com

Analog Devices | 4

Test in Non-synchronous Step-down Converter

The EVAL-LTC7067-AZ can be configured as a simple open-loop non-synchronous buck converter. To set up, populate

Q1, D3, and cut the copper on D3 to isolate the cathode of D3 from GND, Q1 will be the control MOSFET of buck, and

D3 will conduct the freewheeling inductor current when Q1 is off. Set the corresponding duty cycle and frequency of G1IN,

populate inductor across Q1 source to VOUT1, and simply short VIN_OPT to Q1 drain. Choose the output capacitors,

switching frequency, duty cycle, and sinking current by design. VOUT1 is the output. VIN_OPT is the input, to test EVAL-

LTC7067-AZ in a buck configuration, another power supply connected to VIN_OPT and GND is needed, choose input

capacitors by design. Note that the G1_RTN will see VIN_OPT voltage and G1VCC will see VIN_OPT+VCC-VDIODE,

where VDIODE 

Figure 8

．

Test with Buck Converter Set up

Test in Non-synchronous Step-up Converter

The EVAL-LTC7067-AZ can be configured as a simple open-loop non-synchronous boost converter. To set up, populate

Q2, D2. Populate inductor from VIN to Q2 drain. Set the corresponding duty cycle and frequency of G2IN. Choose the

output capacitors, switching frequency, duty cycle, and sinking current by design. VOUT2 is the output. VIN_OPT is the

input, to test EVAL-LTC7067-AZ in a boost configuration, another power supply connected to VIN_OPT and GND is

needed, choose input capacitors by design.

FAULT

FAULT is an open drain output of an internal N-channel MOSFET, there is a pull-up resistor from FAULT to VCC on board.

FAULT will be pulled low during VCC UVLO/OVLO, typical VCC UVLO voltage is 4.3V, VCC OVLO voltage is 14.6V, or

over temperature (180C). After all the faults are cleared, FAULT will be pulled up to VCC.

150V Dual High-Side MOSFET Gate

Driver

EVAL-LTC7067-AZ

www.analog.com

Analog Devices | 5

EVAL-LTC7067-AZ Bill of Materials

ITEM

QTY

DESIGNATOR

DESCRIPTION

MANUFACTURER PART

NUMBER

REQUIRED CIRCUIT COMPONENTS

CAP CER 1uF 16V 20% X5R

0402

MURATA

GRM155R61C105MA12D

CAP CER 10uF 16V 10% X5R

0805

MURATA

GRM21BR61C106KE15L

C3,C4

CAP CER 1uF 16V 10% X7R

0603

AVX

0603YC105KAT2A2

C5,C6

CAP CER 3300PF 25V 10%

X7R 0603

WALSIN TECHNOLOGY

0603B332K250CT

D5,D6

DIO SCHOTTKY 150V 1A

SOD123HE AEC-Q101

ONSEMI

S115FP

RES SMD 100K Ohm 1%

1/10W 0603 AEC-Q200

PANASONIC

ERJ-3EKF1003V

R5,R6,R7,R8

RES SMD 0 Ohm 0603 AEC-

Q200

VISHAY

CRCW0603000ZRT1

IC-ADI 150V DUAL HIGH SIDE

MOSFET GATE DRIVER

ANALOG DEVICES

LTC7067RMSE#PBF

OPTIONAL CIRCUIT COMPONENTS

C7,C8,C9,C10

CAP CER 10UF 100V 10% X7S

1210

MURATA

GRM32EC72A106KE05L

C11,C12,C13,C14

CAP ALUM ELECT 47UF 100V

20% 12.5X13.5MM AEC-Q200

500MA 5000H

PANASONIC

EEV-FK2A470Q

D1,D2,D3,D4

DIODE SCHOTTKY TMBS 10A

150V SMP

VISHAY

V10PM15-M3/H

Q1,Q2

TRAN MOSFET N-CH 150V

56A 8LD TDSON EP

INFINEON TECHNOLOGIES

BSC160N15NS5ATMA1

HARDWARE FOR DEMO BOARD ONLY

TP1,TP2,TP3,TP4,TP5,TP6

,TP7,TP8,TP9,TP10,TP11

CONN-PCB SOLDER

TERMINAL TURRETS

MILL-MAX

2501-2-00-80-00-00-07-0

STANDOFF, BRD SPT SNAP

FIT 9.53MM LENGTH, EVAL

BOARD MTG

KEYSTONE

8832

150V Dual High-Side MOSFET Gate

Driver

EVAL-LTC7067-AZ

www.analog.com

Analog Devices | 6

EVAL-LTC7067-AZ Schematic

150V Dual High-Side MOSFET Gate

Driver

EVAL-LTC7067-AZ

Revision History

REVISION

NUMBER

REVISION

DATE

DESCRIPTION

PAGES

CHANGED

6/23

Initial release



Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is

assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that

may result from its use. Specifications subject to change without notice. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the

property of their respective owners.

w w w . a n a l o g . c o m

Analog Devices | 7

150V Dual High-Side MOSFET Gate

Driver

EVAL-LTC7067-AZ

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