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Texas Instruments SN6505 | Demoboard TIDA-01606 HV Card
10-kW, bidirectional three-phase three-level (T-type) inverter and PFC reference design
Overview
| Topology | Push-Pull Converter symmetrical isolated |
| Input voltage | 2.25-5.5 V |
| Switching frequency | 160-420 kHz |
| Output 1 | 5 V / 1 A |
| IC revision | E4 |
Description
The SN6505x is a low-noise, low-EMI push-pull transformer driver, specifically designed for small form factor, isolated power supplies. It drives lowprofile, center-tapped transformers from a 2.25 V to 5 V DC power supply. Ultra-low noise and EMI areachieved by slew rate control of the output switch voltage and through Spread Spectrum Clocking (SSC). The SN6505x consists of an oscillator followed by a gate drive circuit that provides the complementary output signals to drive groundreferenced N-channel power switches. The device includes two 1-A Power-MOSFET switches to ensurestart-up under heavy loads. The switching clock can also be provided externally for accurate placement of switcher harmonics, or when operating with multiple transformer drivers. The internal protection featuresinclude a 1.7 A current limiting, under-voltage lockout,thermal shutdown, and break-before-make circuitry. SN6505x includes a soft-start feature that preventshigh inrush current during power up with large load capacitors. SN6505A has a 160 kHz internal oscillator for applications that need to minimize emissions whereas SN6505B has a 420 kHz internal oscillatorsfor applications that require higher efficiency and smaller transformer size. The SN6505x is available in a small 6-pin SOT23/DBV package. The device operation is characterized for a temperature rangefrom –55°C to 125°C.
Features
- -Push-pull driver for transformers
- Wide input voltage range: 2.25 V to 5.5 V
- High output drive: 1 A at 5 V supply
- Low RON 0.25 Ω max at 4.5 V supply
- Ultra-low EMI
- Spread spectrum clocking
- Precision internal oscillator options: 160 kHz (SN6505A) and 420 kHz (SN6505B)
- Synchronization of multiple devices with external clock input
- Slew-rate control
- 1.7 A Current-limit
- Low shutdown current: <1 μA
- Thermal shutdown
- Wide temperature range: –55°C to 125°C
- Small 6-Pin SOT23 (DBV) package
- Soft-start to reduce In-rush current
Typical applications
- Isolated power supply for CAN, RS-485, RS-422, RS-232, SPI, I2C, low-power LAN, Low-noise isolated USB supplies, Telecom supplies, Radio supplies, Distributed supplies
- Medical instruments
- Process control, Precision instruments
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | Packaging | Pins (pcs) | Pitch (mm) | Rows | Gender | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | IR (mA) | Z @ 1 GHz (Ω) | H (mm) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 150060VS55040 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WL-SMCD SMT Mono-color Chip LED Diffused | 573 | Bright Green | 575 | 60 | 2 | AlInGaP | 140 | – | – | – | 0603 | -40 °C up to +85 °C | – | – | – | 1.6 | 0.8 | – | Tape and Reel | – | – | – | – | – | – | – | – | – | – | – | – | 0.4 | ||
 | 742792662 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CBF SMT EMI Suppression Ferrite Bead | – | – | – | – | – | – | – | – | – | – | 0603 | -55 °C up to +125 °C | – | – | – | 1.6 | 0.8 | 0.3 | – | – | – | – | – | 1000 | 1050 | 120 MHz | 830 | 0.3 | Wide Band | 600 | 186 | 0.8 | ||
 | 74279228260 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-MPSB EMI Multilayer Power Suppression Bead | – | – | – | – | – | – | – | – | – | – | 0603 | -55 °C up to +125 °C | – | – | – | 1.6 | 0.8 | 0.3 | – | – | – | – | – | 26 | 39 | 515 MHz | 6500 | 0.008 | High Current | 6500 | 33 | 0.8 | ||
 | 885012206040 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 16 V(DC) | – | – | – | – | – | – | – | 10 nF | ±10% | 16 | 0603 | -55 °C up to +125 °C | 3.5 | 10 GΩ | X7R Class II | 1.6 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | ||
| 885012206095 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | 100 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | 3 | 5 GΩ | X7R Class II | 1.6 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | 0.8 | ||
 | 61300411021 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | – | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD Pin Header - Single | – | – | – | – | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | 1000 MΩ | – | 10.16 | – | – | Bag | 4 | 2.54 | Single | Pin Header | – | – | – | – | – | Angled | 3000 | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 150060VS55040 | SPEC | |
| 742792662 | SPEC | |
| 74279228260 | SPEC | |
| 885012206040 | SPEC | |
| 885012206095 | SPEC | |
| 61300411021 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | – |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ. (nm) | Emitting Color | λPeak typ. (nm) | IV typ. (mcd) | VF typ. (V) | Chip Technology | 2θ50% typ. (°) | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | Fl (mm) | Packaging | Pins (pcs) | Pitch (mm) | Rows | Gender | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR 2 (mA) | RDC max. (Ω) | Type | IR (mA) | Z @ 1 GHz (Ω) | H (mm) | Samples |
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