Set the design target at operating conditions
At 4–5 kHz and partial load, switching loss has a greater impact than conduction loss.
VCE(sat) minimisation → Eoff minimisation
Partnerships
Success Stories
Projects where devices and modules were designed for the customer's power conversion conditions, with performance, reliability and supply capability verified together.
SUCCESS STORY 01 · ESS
Engineered around the real operating profile of an ESS PCS
For a utility-grid ESS, DICIO replaced the global tier-one module used in a standard socket with a hybrid module optimised for the PCS switching frequency and load profile.
1700 V / 1200 A Hybrid IGBT ModuleFast-type Trench IGBT + SiC SBDIHM Footprint · 130 × 140 mm
Efficiency lead at every operating point
Conversion-loss reduction vs. existing module
PCS peak efficiency
Heatsink temperature under identical cooling
02 · THE CHALLENGE
We redefined the problem under real operating conditions
The same 1700 V / 1200 A rating does not mean the same module
The required module changes with the way the PCS operates
A grid-scale ESS PCS switches at 4–5 kHz in a three-phase, two-level topology. Even at rated load, the module carries around 60% of its rated current.
Under these operating conditions, reducing turn-off energy (Eoff) and total switching loss matters more to system efficiency than simply minimising VCE(sat).
The existing system used a general-purpose 1700 V / 1200 A Hybrid IGBT + SiC SBD module.
TOPOLOGY
3-Phase 2-Level PCS
DC-LINK
740 / 920 / 1100 Vdc
SWITCHING FREQUENCY
4–5 kHz
LOAD RANGE
20–400 kW
OPERATING PROFILE
Partial load centred around 60% rated current
03 · DICIO SOLUTION
Same footprint, optimised internal design
Existing rating
General-PurposeHybrid Module1700 V / 1200 A
Same IHM Footprint130 × 140 mm
DICIO DHM1200GC170LX1
Application-OptimizedHybrid Module1700 V / 1200 A
Fast-type Trench IGBT + SiC SBD
Fast-type Trench IGBT with reduced turn-off energy and capacitance is paired with a 1700 V SiC Schottky diode.
Eoff −33%Eon + Eoff −27%VCE(sat) +0.15 V @ 300 A
Drop-in to the existing system
The existing IHM footprint and interfaces remain unchanged.
PEBBBusbarGate DriverCoolingTerminal LayoutMechanical Structure
04 · 1:1 SYSTEM VALIDATION
Directly compared in the customer's production PCS
On 25 January 2026, the modules were compared on the customer's 480 kW production test rig while gate drive, DC-Link and cooling conditions remained identical.
DC-LINK
740 / 920 / 1100 Vdc
LOAD
20–400 kW · 11 steps
MODE
Charge / Discharge
TOTAL
66 Operating Points
740 Vdc
PCS Efficiency (%)920 Vdc
PCS Efficiency (%)1100 Vdc
PCS Efficiency (%)66 / 66
DICIO efficiency lead at every measured point
−18% AVG.
Average conversion-loss reduction
−43% MAX.
740 Vdc · 160 kW · Charge
98.81%
PCS peak efficiency
Same PEBBSame Gate DriveSame BusbarSame CoolingSame DC-LinkModule only replaced
05 · MEASURED RESULTS
Higher efficiency, lower loss, lower temperature
66 / 66
DICIO efficiency lead at all test points
−43%
Maximum system conversion-loss reduction
740 Vdc · 160 kW · Charging
98.81%
DICIO PCS peak efficiency
Existing module 98.44%
−13 K
Heatsink temperature after 600 kW operation
DICIO 39°C · Existing 52°C
| Metric | Existing Module | DICIO |
|---|---|---|
| Peak Efficiency | 98.44% | 98.81% |
| Heatsink Temperature @ 600 kW | 52°C | 39°C |
| Loss Index @ 740 Vdc / 160 kW | 100 | 57 |
2025 · DESIGN
Fast-type Trench IGBT + SiC SBD
Designed for ESS PCS operating conditions
2025.11 · SUPPLY
Module supplied for utility ESS PCS
2026.01 · SYSTEM TEST
480 kW PCS 1:1
66 / 66 operating points
2026.03 · QUALIFICATION
Power Cycling 57,710 cycles
AQG 324 passed
06 · CASE VALUE
Design that starts with the customer system creates measurable performance
Start from operating conditions
We analyse topology, switching frequency and load profile—not voltage and current ratings alone.
Keep the system unchanged
The industry-standard footprint keeps the existing busbar, gate driver and cooling unchanged.
Validate in real equipment
We go beyond simulation and perform a direct 1:1 comparison in the customer's PCS.
Related solution
1700 V / 1200 A Hybrid IGBT Module
Fast-type Trench IGBT + SiC SBD · IHM Footprint
Performance proven in the customer system—not only on a datasheet
Share your DC-Link voltage, output, switching frequency and cooling conditions. We will review the optimal device and module configuration against your real operating profile.