Onsemi NCD57253GEVB Manuale utente

EVAL BOARD USER’S MANUAL

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©Semiconductor Components Industries, LLC, 2020

December, 2021 −Rev. 0

1Publication Order Number:

EVBUM2797/D

NCD57253 Evaluation Board

User Manual

NCD57253GEVB

INTRODUCTION

The NCD57253 Evaluation driver board is designed for evaluation

of the NCD57253.

The NCD57253 is a high current two channel gate driver. It can

directly drive two independent MOFETs in any configuration.

The driver provides 5 kVrms internal galvanic isolation from input

to each output and functional isolation between the two output

channels. The device accepts 3.3 V to 20 V bias voltage and signal

levels on the input side and up to 32 V bias voltage on the output side.

The device accepts complementary inputs and offers separate pins for

Disable and Dead Time control for system design convenience.

NCD57253 is available in wide body SOIC−16 package.

DESCRIPTION

The board was created for the ability to verify and test the datasheet

parameters. The board can be externally connected to a power device

to verify real parameters in the system. It contains all the necessary

peripheral components for direct connection to the power devices. The

input bias is configured so the VDDA and VDDB can be powered by

using many types of integrated dc−dc power supplies or can be

powered directly from external power source. The PCB design is

optimized to reduce loop areas and provide clear and simple

measurement of all signals. All the parts (except optional dc−dc

sources) are TOP mounted which allows easy replacement and can

serve as an ideal reference design for future use.

Features

•High Peak Output Current (+8 A/−8A)

•Configurable as a Dual Low−Side or Dual High−Side or Half−Bridge

Driver

•Programmable Overlap or Dead Time control

•Disable Pin to Turn Off Outputs for Power Sequencing

•ANB Function to Offer Flexibility to Set up the Driver as

Half−bridge Driver Operating with a Single Input Signal

•MOSFET Gate Clamping during Short Circuit

•Short Propagation Delays with Accurate Matching

•Tight UVLO Thresholds on all Power Supplies

•3.3 V, 5 V, and 15 V Logic Input

•5 kVrms Galvanic Isolation from Input to each Output and 1.5 kV

Peak Differential Voltage between Output Channels

•1200 V Working Voltage (per VDE0884−11 Requirements)

•High Common Mode Transient Immunity

•High Electromagnetic Immunity

•This Device is Pb−Free, Halogen Free/BFR Free and is RoHS

Compliant

•Non−inverting Output Signals

Figure 1. Evaluation Board TOP View

•PCB layout optimized for power supply

bypassing capacitor, gate−driver loop

•Allows quick verification of most of the

data sheet parameters

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PIN Description

Table 1. EVALUATION BOARD PIN DESCRIPTION

Pin Name Pin Number Description

INA 17, 24 Channel A input signal

INB 15, 26 Channel B input signal

DIS 19, 22 Disable signal input (active High)

+5V 21, 20 Driver primary side power supply

VCC 23, 18 DC/DC sources alternative power supply (optional)

GND 25, 16 Primary side power/signal ground

VCCA 39, 40 A channel positive power supply

GNDA 37, 38 A channel Ground

VEEA 35, 36 A channel negative power supply

E−A33, 34 Source connection of A channel – connected to GNDA

G−A31, 32 Gate connector of A channel

VCCB 1, 2 B channel positive power supply

GNDB 3, 4 B channel Ground

VEEB 5, 6 B channel negative power supply

E−B7, 8 Source connection of B channel – connected to GNDB

G−B9, 10 Gate connection of B channel

ON−BOARD Jumpers Functional Table

Table 2. NCD57253 JUMPERS FUNCTIONAL TABLE

Jumper Name Setup Description

VIN SET OPEN When using external power supplies for VCCA / VCCB

Power supplies need to be connected to the VCCA, VCCB pins on P1

+5V When using dc−dc converter powered by the same voltage as the primary side of the driver

VCC pin on P1 can be unconnected

VCC When using dc−dc converter powered by different voltage as the primary side of the driver

Power supply for dc−dc converter need to be connected to the VCC pin on P1

ANB SET ON When complementary output signals need to be generated from a single input signal

OFF Output signals are in phase with input signals

DT SET DT Dead time and interlocking logic between INA and INB is defined by the value of the external

resistor (R7)

OFF Interlocking logic disabled, no dead time applied

FLOAT Dead time and interlocking logic between INA and INB are set internally to the minimum value

(see the datasheet)

B−IN SET INA When ANB SET is ON – both inputs are connected together

INB When ANB SET is OFF

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Electrical Specification

Table 3. NCD57253 ELECTRICAL SPECIFICATION

Description Min Typ Max Unit

VCCA/VCCB Output positive bias power supply (VCC−VEE max) 13 −36 V

VEE Output negative bias power supply 0− −20 V

GNDA / GNDB Output bias ground – connected to the MOSFET source − − −

+5V Input bias power supply (VDDI) 3.3 −22 V

GND Input bias signal and power ground − − −

DIS Disable signal input 0−VDDI V

VCC DC−DC sources optional power supply

(depended on dc−dc)

0− − V

TJOperating junction temperature range −40 −125 °C

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FUNCTIONAL DESCRIPTION

Power Supply (VCC, +5V, VCCA, VCCB)

NCD57253 is designed to support unipolar power supply

on both individual channels.

The evaluation driver board supports two types of output

side power supply:

•On board dc−dc converter.

♦Powered by a common source as the input side of

NCD57253.

♦Powered from external power pin VCC.

•External power supply.

The evaluation driver board is designed to support bipolar

power supply, this is achieved by creating a virtual ground

connected to the MOSFET source. If bipolar power supply

is not required, VEEA / VEEB pin should be connected to

the GNDA / GNDB.

For more detailed settings see the Table 2.

Figure 2. On Board DC−DC Power Converter Powered by a Common Power Source as the Input Side of the Driver

Figure 3. On Board DC−DC Power Converter Powered by a Different Power Source from the VCC Pin

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Figure 4. External Power Supply (No On Board DC−DC Converters)

Signal Inputs (INA, INB)

To prevent output pulse trimming, NCD57253 is

equipped by resettable input functionality.

This function is active when the UVLO or the DISABLE

function is detected.

OUTx will stay LOW until rising edge is detected on the

INx.

Signal Inputs Setup (ANB SET, DT SET)

Complementary Output Setup (ANB)

This function provides complementary signal output from

one PWM input signal on INA.

•Set ANB SET jumper to ON to activate the function,

B−IN jumper should be set to the INA to ensure proper

input signal rising edge reset after UVLO conditions have

disappeared or DISABLE has been deactivated.

•ANB SET should be set to OFF when G−A and G−B are

controlled individually by INA and INB (along with

DISABLE and DT).

Deadtime (DT)

The function provides complementary output signals with

defined deadtime based on the value of the external resistor

R7 (connected between DT pin and GND). The deadtime

can be estimated as tDT (ns) ≈10 x RDT (kW).

If minimum dead time is required, DT SET should remain

float (see Table 2).

•If DT SET is set to OFF, the deadtime control is disabled.

Outputs are controlled by inputs with respect to other

settings such as ANB SET, IN−B.

•If DT SET is set to DT, the deadtime control is active.

Outputs are controlled by inputs with added deadtime.

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TEST SPECIFICATION

This section provides details how to configure the

NCD57253 Evaluation board. Basic laboratory equipment

will be required to perform the tests.

Equipment

•Power supplies

♦3 pcs of DC power supplies providing minimally

25 V/1 A. (or 1 DC power supply + 2 pcs of dc−dc

converters ).

•Function generator

♦Two channel functional generator providing the

required testing frequency.

•Oscilloscope

♦Oscilloscope 2 channel (4 channel optional)

−Passive probes

Bench Test Setup

The bench test setup shows the equipment connections.

Use basic setup procedure as a reference:

•Make sure the power supplies & outputs of signal

generators are powered off / disabled

•Connect function generator to the INA and INB signal

inputs and GND

•Connect power supply positive lead to the +5 V

•Connect power supply negative lead to the GND

•Connect power supplies positive lead to the VCCA /

VCCB

•Connect power supply negative lead to the VEEA / VEEB

•(VEEA/VEEB shorted to the GNDA/GNDB if not used)

•Connect power supply ground lead to the GNDA / GNDB

•Connect oscilloscope probes to G−A, G−B output pins

Figure 5. Test Setup Diagram

Power Up

1. Before the power−up, verify the correct connection

of all signals and power leads

2. Enable power supply. Current consumption

depends on the chosen solution of the secondary

side power supply. When 5 V to +20 V/−5V

dc−dc converters are used, the current

consumption can be up to 300 mA

3. Enable function generator outputs

4. Check the signals at each outputs

Power Down

1. Disable functional generator outputs

2. Disable power supply

3. Disconnect equipment

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Test 1 – Typical Performance Waveforms – Propagation Delay

To set the board, use this setup as a reference.

Make sure the power supplies & outputs of signal generators are powered off / disabled channel

1. VIN SET

a. For powering outputs by using external power supplies −open jumper

b. For using 5 V dc−dc converter – Set jumper to 5 V

c. For using different input voltage dc−dc converter – Set jumper to VCC

i. External power supplies with appropriate voltage need to be connected to VCC pin

2. ANB SET – Set to OFF

3. DT SET – Set to OFF

4. B−IN SET – Set to INB

5. POWER UP the setup

(Legend: C1 – Input A (INA), C2 – Output A (G−A), C3 – Input B (INB), C4 – Output B (G−B))

Figure 6. INPUT and OUTPUT Rise Propagation Delay Waveforms

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(Legend: C1 – Input A (INA), C2 – Output A (G−A), C3 – Input B (INB), C4 – Output B (G−B))

Figure 7. INPUT and OUTPUT Fall Propagation Delay Waveforms

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Test 2 – Typical Performance Waveforms – Independent 2 Channels Driver

The NCD57253 can work as 2 independent channel driver.

To set the board as 2 independent channel driver, use this setup as a reference.

Make sure the power supplies & outputs of signal generators are powered off / disabled channel

1. VIN SET

a. For powering outputs by using external power supplies −open jumper

b. For using 5 V dc−dc converter – Set jumper to 5 V

c. For using different input voltage dc−dc converter – Set jumper to VCC

i. External power supplies with appropriate voltage need to be connected to VCC pin

2. ANB SET – Set to OFF

3. DT SET – Set to OFF

4. B−IN SET – Set to INB

5. POWER UP the setup

(Legend: C1 – Input A (INA), C2 – Output A (G−A), C3 – Input B (INB), C4 – Output B (G−B))

Figure 8. INPUT and OUTPUT Signals

(Input signals from the external signal generator are in phase)

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(Legend: C1 – Input A (INA), C2 – Output A (G−A), C3 – Input B (INB), C4 – Output B (G−B))

Figure 9. INPUT and OUTPUT Signals

(Input signals from the external signal generator are complementary)

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