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- CT01 Series
Key Features
- 5.1 mm low-profile SMT current-sense transformer
- Compact 8.2 mm × 7.0 mm PCB footprint
- Supports primary currents up to 10 A
- Supports SMPS switching frequencies up to ~1.5 MHz
- 500 VAC primary-to-secondary isolation
- Turns ratios from 1:20 to 1:200
- Operating temperature ranges from –40°C to +130°C
- Reflow-ready SMT design with tape-and-reel packaging
- Suitable for pick-and-place assembly
Applications
- DC/DC converters needing compact isolated current feedback
- AC/DC power supplies with current feedback or protection loops
- POL regulators requiring accurate inductor current sensing
- Current-mode control sensing in SMPS designs within CT02’s SRF and ET-product limits
- Over-current and fault monitoring on low-to-moderate current rails
- Board-level isolated current measurement in compact power modules
- DC/DC converters needing compact isolated current feedback
- AC/DC power supplies with current feedback or protection loops
- POL regulators requiring accurate inductor current sensing
- Current-mode control sensing in SMPS designs within CT02’s SRF and ET-product limits
- Over-current and fault monitoring on low-to-moderate current rails
- Board-level isolated current measurement in compact power modules
Electrical Specifications @ 25°C - Operating Temperature Range1: -40°C to +130°C
PartNumber
Turns Ratio
(TR)
Secondary Inductance2
(μH, Min)
Secondary DCR
(Ω, Max)
Current Rating4
(A, Max)
SRF5(1-3)
(MHz, Typ)
ET Product8
(V-μs, Max)
Hi-Pot
(VAC)
Mechanical Drawing
Recommended PCB Layout
Schematic
-
Operating Temp. Range: The combination of ambient temperature and temperature rise.
-
Secondary Inductance: Tested at 10kHz, 0.1 VRMS.
-
Primary DCR (8-7): 4.7 mΩ (Ref)
-
Current Rating: Peak current (50% duty cycle) through primary (8-7) to cause 40°C temperature rise at 25°C ambient.
-
SRF: Values are for reference only.
-
Flammability Standard: Meets UL 94V-0.
-
Terminating Resistor (RB): To calculate the value use the formula, RB = E0TR/Ip
-
ET Product: The maximum ET is based upon a flux density of 3700 Gauss at 25°C. Suitable for bipolar applications only.
ET = EO/2f
EO = IPRB/TRWhere as,
EO = Output voltage (V)
RB = Term. Resistor (Ω)
IP = Primary Current (A)
TR = Turns Ratio
f = Frequency (Hz) -
Packaging
- Reel Diameter: 13”
- Reel Width: 16mm
- Pieces/Reel: 1000
Specifications subject to change without prior notice.