Datasheet 3D Model

HTX7045C LLC Half-Bridge Transformers

For isolated gate driver bias supply

HTX7045C Series transformers feature a chip-style construction – a significant advancement over traditional core and bobbin designs that not only reduces the size of the component, but also streamlines the manufacturing process, resulting in a more cost-effective solution.

It offers low interwinding capacitance (as low as 0.7 pF), making it particularly well-suited for use in isolated gate driver bias supplies employing the open-loop LLC topology to achieve ultra-low EMI noise and high CMTI (Common Mode Transient Immunity). These characteristics make it especially beneficial for high-frequency switches including SiC, GaN and IGBT technologies.

The HTX7045C is AEC qualified, making it ideal for automotive traction inverters and motor controls, automotive on-board chargers (OBC), EV charging stations, battery management systems (BMS), automotive DC-DC converters and wide range of other automotive and industrial applications.

Low interwinding capacitance to minimize EMI and achieve high CMTI (Common Mode Transient Immunity)
Optimized for isolated bias supplies for SiC and GaN gate drivers, such as Texas Instrument UCC25800-Q1
Ideal for automotive OBC and traction Inverters in EV/HEV
Designed and fabricated for systems mounted in harsh automotive conditions
2800 Vrms, 4000 VDC, one minute isolation (hipot) between primary and secondary windings.
AEC-Q200 qualified

Buy Now:

Part number

Find my part

Count	Unit price
1	$3.60
100	$2.93
350	$2.20
700	$1.33
1000	$1.03

For high volume or non-stock items, request a quote.

Termination

R = Tin over nickel over silver glass frit

Packaging

C = 7" machine-ready reel

. in stock, ready to ship today.

Request a Sample:

Part number

Find my part

Typical Application

Works with Texas Instruments UCC25800

Input Voltage
9 V — 34 V

Specifications

Electrical specifications at 25°C.

Part number 1 (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±30%)	DCR max 3		Leakage Inductance ±20% (µH) 4		Turns Ratio	Capacitance max (pF) 5	Volt-time product (V-µs)	Irms (mA) 6	Isolation Voltage (Vrms) 7
Part number 1 (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±30%)	Pri (Ω)	Sec (mΩ)	Pri	Sec	Pri : Sec	Capacitance max (pF) 5	Volt-time product (V-µs)	Irms (mA) 6	Isolation Voltage (Vrms) 7
HTX7045C-753ARC	75	0.35	350.00	8.5	8.5	1 : 1	0.75	33.9	730	2800
HTX7045C-104ARC	100	0.40	400.00	9.5	9.5	1 : 1	0.9	38.8	680	2800
HTX7045C-124DRC	120	0.42	280.00	12.5	5.5	1 : 0.67	0.7	38.8	660	2800
HTX7045C-124ERC	120	0.42	320.00	12.0	6.5	1 : 0.75	0.7	45.3	660	2800
HTX7045C-124FRC	120	0.42	350.00	11.0	7.5	1 : 0.83	0.75	38.8	660	2800
HTX7045C-134BRC	130	0.44	170.00	15.0	2.5	1 : 0.4	0.7	45.3	660	2800
HTX7045C-144CRC	140	0.45	230.00	15.0	3.5	1 : 0.5	0.75	45.3	640	2800

Notes

When ordering, please specify turns ratio and packaging codes: e.g. HTX7045C-144CRC
Turns ratio: A = 1 : 1, B = 2.5 : 1, C = 2 : 1, D = 1.5 : 1, E = 1.33 : 1, F = 1.2 : 1
Inductance measured at 100 kHz, 0.1 Vrms, 0 ADC on an Agilent 4263B (or equivalent).
DCR is measured on a Keithley 580 Micro-ohmmeter (or equivalent).
Leakage Inductance LL is measured at 100 KHz, 0.1 Vrms on an Agilent 4263B (or equivalent). Sec is shorted for PRI LL / PRI is shorted for SEC LL.
Interwinding capacitance is measured from primary to secondary at 250 KHz, 0.1 Vrms.
Current that causes a 40°C rise from 25°C when applied to the primary winding with secondary current defined by the turns ratio.
2800 Vrms, 4000 VDC; one minute isolation (hipot) measured between primary and secondary. 4.9 mm creepage and clearance Material Group IIIa (175 ≤ CTI < 400).

Termination:

RoHS compliant tin over nickel over silver glass frit.

Packaging:

C = 7" machine-ready reel
EIA 481 embossed plastic tape (350 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
D = 13" machine-ready reel
EIA 481 embossed plastic tape. Factory order only, not stocked (1500 parts per full reel).

Environmental

Environmental:

RoHS compliant , halogen free

Ambient temperature range:

−40°C to +125°C

Storage temperature range:

Component: −40°C to +140°C
Tape and reel packaging: −40°C to +80°C

Maximum part temperature:

+140°C

Failures in Time (FIT) / Mean Time Between Failures (MTBF):

See FIT/MTBF Calculations

Schematics

Physical characteristics

Tape and Reel specification

Parts per reel		Reel dimensions (mm)					Tape dimensions (mm)						Orientation
7" (178 mm)	13" (330 mm)	A	B	C	D	E	W	P	Po	P1	H	T
350	1500*	178/330	60/100	13	22,4	16,4	16	8	4	2	5,5	0,40

* Special order

General specification

Core Material:

Ferrite

Weight:

0.53 − 0.54 g

Packaging:

350/7" reel; 1500/13" reel Plastic tape: 16 mm wide, 0.4 mm thick, 8 mm pocket spacing, 5.5 mm pocket depth

Soldering/Washing

Moisture Sensitivity Level (MSL):

1 (unlimited floor life at <30°C / 85% relative humidity)

Resistance to soldering heat:

Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles.

Refer to Soldering Coilcraft Components before soldering.

PCB Washing:

Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

Warehouses

Language settings

Currency settings

HTX7045C LLC Half-Bridge Transformers

For isolated gate driver bias supply

Selected configuration not available

Typical Application

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

Related product series

HTX8045C LLC Half-Bridge Transformers

ZA9704-AL No-Opto Flyback Transformer

ZB1347

ZF3205-AE LLC Half-Bridge Transformers

PA6284 Flyback Transformer

PA638x Push-Pull Transformers

MA5421-AL

ZD2024-AE

ZF2957-AE Flyback Transformer

ZD2200-BE Flyback Transformer

ZB1346-BE Flyback Transformers

ZD2020-AE Isolated buck transformer

ZC1905-BE Flyback Transformers

ZD2250-AE, ZE2432-AE

ZD2087-AE Flyback Transformers

ZA9734 Discontinuous Mode Flyback Transformer

ZA9710-AED Flyback Transformer for Texas Instruments

PFD2015 Series

PFD3215 Series

LPD3015 Series

LPD4012 Series

LPD5010 Series

LPD5030 Series

LPD6235 Series

LPD5030V Series

LPD8035V Series

MSC1278 Series

MSD7342 Series

MSD1583 Series

MSD1514 Series

MSD1048 Series

MSD1260 Series

MSD1278 Series

MSD1260T Series

MSD1278T Series

LPR4012 Series

LPR6235 Series

LPH8045 Series

NA6223 Flyback Transformer

NA6264 Flyback Transformer

GA3544 Flyback Transformer

NA5814, NA5919 Flyback Transformer

HA4060-AL Flyback Transformer

Flyback Transformers

B0392-AL Planar Transformer

NA5730-AL Flyback Transformer

B0695-A Flyback Transformer

MA5475-AL Flyback Transformer

FCT1-xxM22SL Forward Mode Transformers

Flyback Transformer

C0984-CL Transformer

GA3172 Flyback Transformer

NA6252, NA5920 Flyback Transformer

Forward Mode Transformers

PA6595 Flyback Tranformer

GA0007-AL Flyback Transformer

HA4018 Flyback Transformer

MA5157 Flyback Transformer

JA4641 Flyback Transformer

C0972-AL Transformer

NA5889 Flyback Transformer

HA4061-AL Flyback Transformer

HA3994-AL Flyback Transformer

NA5743-AL Flyback Transformer