ON Semiconductor NCV91300 User manual
©Semiconductor Components Industries, LLC, 2021
March, 2021 −Rev. 0
1Publication Order Number:
EVBUM2789/D
NCV91300 Evaluation Kit
User Manual
EVBUM2789
DOCUMENT DESCRIPTION
Goal of Document
This document describes the operation and use of the NCV91300
evaluation kit. This kit is provided by ON Semiconductor to help user
to evaluate and set up the NCV91300 numerous operation modes as
well as the typical operating characteristics.
In this document, user will find information about hardware and
Graphical User Interface software, as well as typical Bill of Material,
board schematic and layout.
Applicable and Reference Documents
APPLICATION INFORMATION
Figure 1. Typical Application Schematic
1.0 mH
Processor
Core
NCV91300
Power Good
DCDC
Modular
Driver
Power Supply Input
DCDC
Controller Sense
Enable Control
Input
10 mF
AGND
SDA
PG
EN
SW
PVIN
PGND
FB
BOOT
10 nF
Enabling
Test / I2C
Clocking
Output
Monitoring
Interrupt
Thermal
Protection
AGND
AVIN
Supply Input
Core
External Clock SYNC
Interrupt INTB
AGND
SCL
I2C BUS
2.15 MHz
3.0 A
10 mF
4.7 mF
NCV91300 Data Sheet
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EVAL BOARD USER’S MANUAL
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INTRODUCTION
The NCV91300 is a synchronous PWM buck converter
optimized to supply the different sub systems of automotive
applications post regulation system up to 5 V input. The
device is able to deliver up to 3.0 A, with programmable
output voltage from 0.6 V to 3.3 V. Operation at up to
2.15 MHz switching frequency allows the use of small
components. Synchronous rectification and automatic PFM
to PWM transitions improve overall solution efficiency. The
NCV91300 is housed in low profile 3.0 x 3.0 mm QFN−16
package.
Content
The evaluation kit comes with 2 boards, associated cables
and a self−extractable software.
Requirements
In order to operate properly, user should connect and
configure the following components:
•Personal Computer (PC) with at least one USB port to
communicate with the Interface Board. Microsoft “.NET
Framework 3.5” at least has to be installed. The Graphical
User Interface software is installed on this PC and, with
this software; user will have full control of the NCV91300
on the evaluation board.
•Evaluation board PCB
•USB interface board. This board is a USB to I2C interface.
It receives from PC Graphical User Interface software all
requests and converts it into NCV91300 understandable
I2C command that sets NCV91300 internal registers. If
there is an error or if NCV91300 does not acknowledge
the request as described in the I2C specification, the
interface board will detect it and will inform the PC
Graphical User Interface software. NCV91300 registers
are also read through this interface. In that case, the board
translates I2C format received from NCV91300 to USB
readable standard. PC Graphical User Interface software
will then display the result and NCV91300 configuration
to the user.
Eval Kit Installation
To properly operate the eval kit, NCV91300 GUI should
be installed:
NCV91300 GUI software installation (Refer to Section
GUI Software Installation)
GUI Software Installation
Click on the self−extractable Setup_NCV91300.exe
The installation procedure will install all needed drivers
and software. You may have to re−boot your computer after
installation completion.
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GETTING STARTED
Input / Output Description
This section describes the connectors and jumper settings for proper operation as well as the voltage appropriate range.
Table 1. EVALUATION BOARD OPERATING RANGE
Symbol Parameter Min Typ Max Unit
PVIN Power Supply Range 1.9 3.3 5.5 V
AVIN Analog Supply Range 3.0 3.3 5.5 V
Table 2. CONFIGURATION CONNECTORS DESCRIPTION
Input / Output Description Default Setting
CN1 / CN2 Interface board connector N/A
J1/J8 Banana Analog Supply Input (positive/negative) N/A
J3/J8
J5
Banana Power Supply Input (positive/negative)
SL5 connector Power supply input
N/A
J2 EN Level Settings
•1−2 EN = VBAT
•2−3 EN = Driven by USB Interface Board
2−3
J9 SYNC Level Settings
•1−2 SYNC = connected to J6 SMA
•2−3 SYNC = Driven by USB Interface Board
2−3
J4 PG pull up Closed
J7 INTB pull up Closed
J13/J11
J12
Banana Output voltage (positive/negative)
SL5 connector Output Voltage
N/A
J10 Inductor current sense measurement for differential probe (measured across R6 resistor) N/A
J11 Load transient sense measurement for differential probe (measured across R10 resistor) N/A
J15 CBOOT measurement for differential probe (measured across C13)
J6 SMA for SYNC clock injection N/A
JMP1 / JMP2 GND connector N/A
S3 Input ferrite bead bypass Closed
S1 SCL connection to interface board Closed
S2 SDA connection to interface board Closed
S4 Output ferrite bead bypass Closed
S5 DCDC sense selection (local or remote) Local
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The evaluation board duplicates most important signals on test points to the user.
Table 3. TEST POINT
Test Points Description
TP1 EN: Hardware Enable
•EN = LOW: NCV91300 is disabled
•EN = HIGH: NCV91300 is enabled
TP2 SYNC signal
TP3 PG: Power Good Signal
•PG = LOW: Output voltage out of range
•PG = HIGH: Output voltage in range
TP4 SDA: I2C Data signal
TP5 SCL: I2C Clock signal
TP6 SW: DC to DC converter switching node
TP7 INTB: Interrupt Signal
•INTB = LOW: Interrupt detected
•INTB = HIGH: No interrupt
TP8 PGND sense
TP9 PVIN Sense
TP10/TP11 Feedback loop for bode measurements (across R7)
TP12/TP13 VOUT: Output voltage sense (across C17)
TP14 Gate of the Q1 transistor used for Load Transient
TP15 AVIN Sense
TP16 Iout force
Setup
The following steps should be followed before the
Evaluation Board is operated
1. Install the Graphical User Interface (GUI)
Software on computer
2. Connect the Interface Board to the Board, using
the ribbon cable or board to board connectors
3. Connect Output Voltage and Loads (if any) to the
board
4. Configure all jumpers to Default Settings
5. Connect the interface board to computer with USB
cable
6. Connect NCV91300 Board 2.5 V~5.5 V (See
table 1) power supply to J3/J8 (J5) and J1/J8
connectors, pay attention to polarity of power
supply and the V clamp of the power supply.
7. Turn power supply on
8. Run the NCV91300 Graphical User Interface
Software
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