Power integrations RDHP-2256Q User manual

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User Manual
Title RDHP-2256Q
Application
2-Channel Bitstream Error Emulator for
Automotive ISO 26262 Software Designs
(DSPACE Compatible)
Author System Engineering Automotive
Date February 08, 2023
Revision 1.5
Figure 1. Bitstream error emulator hardware
Feature Set
Automatic and manual emulation of gate driver errors, warnings, and temperature signals
SCALE-EV gate driver ASICs (SIC2192FQ) used for emulation accuracy
Microcontroller for input and output signal handling
DSPACE system input terminals and standard SCALE-EV family interface connector
Powered from single external 5 V, 3 A power supply (USB-C connector or input terminals)
25 V gate supply voltage generated internally

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Table of Contents
 Description ................................................................................................................. 4 
 Design Specifications................................................................................................. 5 
 Electrical Specifications ...................................................................................... 5 
 Environmental Specifications .............................................................................. 5 
 Functional Sections.................................................................................................... 6 
 User Interface............................................................................................................. 7 
 DSPACE Input Interface ..................................................................................... 7 
 Failure and Warning Push Buttons ..................................................................... 7 
 Channel Selector Toggle Switches ..................................................................... 8 
 Top Channel Gate Driver ASIC Interface............................................................ 8 
 Bottom Channel Gate Driver ASIC Interface....................................................... 8 
 Microcontroller Reset Button............................................................................... 9 
 Operation Guide......................................................................................................... 9 
 Bitstream Error Emulation Available ................................................................... 9 
 Limitations........................................................................................................... 9 
 Board Setup ...................................................................................................... 10 
 5V Power Supply Selection........................................................................ 10 
 TEMP Resistor Selection (Top and Bottom Channel) ................................ 10 
 Input PWM Selection (Top and Bottom Channel) ...................................... 11 
 SO and B_OUT Connection (Top and Bottom Channel)............................ 11 
 Error Triggering Mode................................................................................ 12 
 Sequence for Operation .................................................................................... 12 
 Sequence for Power Down ............................................................................... 12 
 Error Emulation ................................................................................................. 13 
 Temperature Sensor .................................................................................. 13 
 V
VISO
Under Voltage................................................................................... 13 
 V
VISO
Over Voltage..................................................................................... 13 
 Gate Monitoring ......................................................................................... 13 
 Over Temperature (OT1
GD
and OT2
GD
)...................................................... 14 
 DESAT....................................................................................................... 14 
 Over Temperature (OT1
DCDC
and OT2
DCDC
) ............................................... 14 
 Primary-side DC/DC Controller Overcurrent Warning................................ 15 
 Dead Time Insertion................................................................................... 15 
 Interlock ..................................................................................................... 15 
 Revision History ....................................................................................................... 16 

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Disclaimer:
The statements, technical information and recommendations contained herein are believed
to be accurate as of the date hereof. All parameters, numbers, values and other technical
data included in the technical information were calculated and determined to our best
knowledge in accordance with the relevant technical norms (if any). They may base on
assumptions or operational conditions that do not necessarily apply in general. We exclude
any representation or warranty, express or implied, in relation to the accuracy or
completeness of the statements, technical information and recommendations contained
herein.
No responsibility is accepted for the accuracy or sufficiency of any of the statements,
technical information, recommendations, or opinions communicated and any liability for
any direct, indirect or consequential loss or damage suffered by any person arising
therefrom is expressly disclaimed.

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Description
The RDHP-2256Q simulates and emulate the SCALE-EV IGBT and SiC MOSFET plug and
play automotive gate drivers to support system software development according to ISO
262632. The RDHP-2256Q hardware allows the software designer to test all gate driver
functions under “low voltage” conditions. One (1) RDHP-2256Q simulates one half bridge,
three (3) RDHP-2256Qs would simulate a three-phase two-level inverter.
The RDHP-2256Q is operated with standard PWM signals. The following errors or warnings
can be simulated by request, per channel:
1) DESAT failure
2) Dead time failure
3) Interlock failure
4) DC/DC overcurrent failure
5) Over temperature DC/DC
6) Over temperature IGD (Gate driver booster stage)
7) Gate monitoring failure
8) Gate driver supply over voltage
9) Gate driver supply under voltage
10) NTC temperature value simulation
Failures and warnings can be activated by using the onboard push buttons or by digital
signals from the DSPACE input interface or other electrical control systems.
Figure 2. RDHP-2256Q hardware with push button,
switches, and potentiometers for temperature simulations

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Design Specifications
Electrical Specifications
Description Symbol Min Typ Max Units
Primary Side Supply Voltage
Supply voltage referenced to GND V
5V
4.75 5 5.25 V
Reference ground GND 0 V
Integrated Secondary Side Supply Voltage
Positive supply voltage referenced to V
VEEx
V
VISOx
15 V
Secondary side reference potential per channel V
VEEx
0 V
Negative supply voltage referenced to V
VEEx
V
COM
-10 V
Input and Output Signals
PWM input signals (0V = LOW, 5V = HIGH) V
INx
0 5 V
PWM input signal frequency f
INx
20 kHz
DSPACE input signals (0V = LOW, 5V = HIGH) V
DSPACE
0 5 V
Status feedback signal (0V = FAULT, 5V = NO
FAULT) V
SOx
0 5 V
Environmental Specifications
Description Symbol Min Typ Max Units
Ambient temperature T
a
25 °C
Altitude of operation h
a
2000 m

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Functional Sections
Figure 3. Unit 3D render (Portrait)

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User Interface
DSPACE Input Interface
Pin
No.
Label on
Enclosure I/O Function
1 5V VCC Supply Primary-side supply voltage
2 TEMP Input Cycle discrete resistance values at TEMP pin
3 Bot EN Input Enable bottom channel bitstream error emulation
4 Top EN Input Enable top channel bitstream error emulation
5 Viso UV Input Trigger VISO under voltage warning
6 Viso OV Input Trigger VISO over voltage warning
7 Gate M Input Trigger gate monitoring warning
8 OT IGD Input Trigger gate driver over temperature warning
9 DESAT Input Trigger DESAT detection
10 OT DC/DC Input Trigger DC/DC over temperature warning
11 OC DC/DC Input Trigger primary-side DC/DC controller overcurrent warning
12 DT INSRT Input Trigger dead time insertion warning
13 Interlock Input Trigger interlock warning
14 GND Supply Common ground potential
Table 1. DSPACE input interface pin assignment and functions
Failure and Warning Push Buttons
Label on
Enclosure I/O Function
Interlock Input Trigger interlock warning
Deadtime Insertion Input Trigger dead time insertion warning
Over Curr DC/DC Input Trigger primary-side DC/DC controller overcurrent warning
Over Temp DC/DC Input Trigger DC/DC over temperature warning
DESAT Input Trigger DESAT detection
Over Temp IGD Input Trigger gate driver over temperature warning
Gate Monitoring Input Trigger gate monitoring warning
Viso OV Input Trigger VISO over voltage warning
Viso UV Input Trigger VISO under voltage warning
Table 2. Failure and warning push button functions

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Channel Selector Toggle Switches
Label on
Enclosure I/O Function
Bot EN Input Enable error emulation on the bottom channel
(Toggle up)
Top EN Input Enable error emulation on the top channel
(Toggle up)
OFF Input
Disable error emulation on top and/or bottom channel
(Toggle down)
Table 3. Channel selector toggle switch selections and functions
Top Channel Gate Driver ASIC Interface
Pin
No.
Label on
Enclosure I/O Function
8 GATE2 Output Top channel gate signal
7 VEE2 Supply Top channel negative supply voltage reference
6 ASC_AD2 Input Primary-side ASC_AD pin signal
5 _AD_EN Input Primary-side ASC_AD_EN pin signal
4 SO2 Output Logic fault signal
3 IN2 Input Logic command signal
2 BOUT2 Output Digital bitstream output
1 GND Supply Common ground potential
Table 4. Top channel SCALE EV interface pin assignment and functions
Bottom Channel Gate Driver ASIC Interface
Pin
No.
Label on
Enclosure I/O Function
8 GATE1 Output Bottom channel gate signal
7 VEE1 Supply Bottom channel negative supply voltage reference
6 ASC_AD1 Input Primary-side ASC_AD pin signal
5 _AD_EN1 Input Primary-side ASC_AD_EN pin signal
4 SO1 Output Logic fault signal
3 IN1 Input Logic command signal
2 BOUT1 Output Digital bitstream output
1 GND Supply Common ground potential
Table 5. Bottom channel SCALE EV interface pin assignment and functions

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Microcontroller Reset Button
Label on
Enclosure I/O Function
MCU Reset Input
Reset onboard microcontroller
Note: Errors/warnings may be flagged by the bitstream
reader GUI when the onboard microcontroller is reset
due to the microcontroller’s initialization process.
Table 6. Microcontroller reset button function
Operation Guide
Bitstream Error Emulation Available
1. Temperature Sensor
2. V
VISO
Under Voltage
3. V
VISO
Over Voltage
4. Gate Monitor
5. Over Temperature (OT1
GD
and OT2
GD
)
6. DESAT Detection
7. Over Temperature (OT1
DCDC
and OT2
DCDC
)
8. Primary-side DC/DC Controller Overcurrent Warning
9. Dead Time Insertion
10. Interlock
Limitations
1. Minimum power supply rating of 15 W (5 V, 3 A).
2. All errors can be triggered on both top and bottom channels simultaneously,
except for Over Temperature (OT1
DCDC
and OT2
DCDC
).
3. Dead Time Insertion and Interlock will always be triggered on both top and
bottom channels simultaneously.
4. Error emulation is only executed once the push button is released or the rising
edge of a digital signal from the DSPACE input interface is detected.
5. Only one error emulation can be triggered at a time.
6. Channel switching is prohibited while an error emulation is currently executing.

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Board Setup
5 V Power Supply Selection
A power adapter/power supply with a minimum rating of 15 W
(5 V, 3 A) is required for powering up the board.
1. To supply the board through the USB-C port
-Short pin 2 and pin 3 of the “5V Supply Selector” using a
jumper.
-Connect the USB-C end of a power cable to the USB-C port
of the board.
-Connect the other end of the power cable to a power
adapter.
2. To supply the board through the DSPACE input interface
-Short pin 2 and pin 1 of the “5V Supply Selector” using a
jumper.
-Connect the negative wire of the power supply to the “GND”
pin (Pin 14) of the DSPACE input interface.
- Connect the positive wire of the power supply to the “5V
VCC” pin (Pin 1) of the DSPACE input interface.
TEMP Resistor Selection (Top and Bottom Channel)
1. To connect the potentiometer to the TEMP pin of SIC2192FQ
-Short pin 2 and pin 1 of the “TEMP Resistor Selector” using
a jumper.
2. To connect the discrete SMD resistors and THT thermistor
provision to the TEMP pin of SIC2192FQ
-Short pin 2 and pin 3 of the “TEMP Resistor Selector” using
a jumper.
No manual button is available for cycling SMD resistors to the TEMP
pin of SIC2192FQ. Control for cycling the SMD resistors to the
TEMP pin of SIC2192FQ can only be done using a digital signal
through “TEMP” pin (Pin 2) of the DSPACE input interface.
1 2 3
1
2
3